CivilsIASPrep.comUPSC PYQs: Science & Technology
Review complete published questions grouped by subject: Science & Technology.
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Questions
- Explain by giving two examples, how biotechnology has helped the Indian farmers in processing their perishable crops.2026 · Mains GS3 · Science & Technology · Biotechnology in Processing Perishable Crops
- Distinguish between a Fast Breeder Reactor (FBR) and a thermal nuclear reactor. In the context of first indigenously developed prototype FBR at Kalpakkam, explain the term “criticality”. What are its implications for clean energy future of our country?2026 · Mains GS3 · Science & Technology · Fast Breeder Reactor and Criticality
- Mention salient features of “Mission Drishti”. Discuss the imaging techniques used in the satellite launched on 3rd May 2026. Why it is being considered world's first satellite of its kind?2026 · Mains GS3 · Science & Technology · Mission Drishti and OptoSAR
- What is agentic Artificial Intelligence (AI)? Explain its working. Describe its applications with suitable examples. Discuss the advantages, risks and challenges associated with agentic AI systems.2026 · Mains GS3 · Science & Technology · Agentic Artificial Intelligence
- Which statements about genetic medicines are correct? 1. They can repair, replace or compensate for faulty genes causing disease. 2. Engineered viral vectors and lipid nanoparticles can deliver genetic material. 3. They necessarily alter the entire DNA sequence of a patient.2026 · Prelims GS1 · Science & Technology · Genetic medicine
- Regarding Large Language Models: 1. They model probabilities of possible next tokens/words. 2. Training uses mathematical optimization to reduce prediction loss. 3. Their outputs are guaranteed to be unbiased. Which are correct?2026 · Prelims GS1 · Science & Technology · Large Language Models
- Consider stealth technology: 1. Low radar cross-section and radar-absorbing materials are used. 2. Certain radar frequency bands can still detect stealth platforms. 3. Metamaterials are applied mainly to increase electromagnetic scattering. Which are correct?2026 · Prelims GS1 · Science & Technology · Stealth technology
- With reference to aircraft flight recorders ('black boxes'): 1. Their underwater beacons emit red-light pulses. 2. They record cockpit audio and flight data. 3. Crash-survivable memory is protected using materials such as stainless steel or titanium. Which are correct?2026 · Prelims GS1 · Science & Technology · Aviation technology
- Regarding green hydrogen: 1. Hydrogen from natural-gas reforming with carbon capture is green hydrogen. 2. Renewable-powered water electrolysis produces green hydrogen. 3. India's National Green Hydrogen Mission targets roughly 50 MMT annual GHG-abatement potential by 2030. Which are correct?2026 · Prelims GS1 · Science & Technology · Green hydrogen
- Private participation in India's space sector: 1. IN-SPACe facilitates and authorizes non-government space activity. 2. Agnikul demonstrated a flight using a fully 3D-printed single-piece rocket engine. 3. Skyroot developed the liquid propellant used by GSLV. Which are correct?2026 · Prelims GS1 · Science & Technology · Private space sector
- Regarding drone swarms: 1. They normally rely on terahertz links to the command centre. 2. Drones within a swarm can communicate with one another. 3. GPS spoofing can be used as a counter-drone technique. Which are correct?2026 · Prelims GS1 · Science & Technology · Drone swarms
- Regarding GenomeIndia: 1. It is a component of the original international Human Genome Project. 2. It is supported by India's Department of Biotechnology. 3. It seeks to catalogue genetic diversity across Indian populations. Which are correct?2026 · Prelims GS1 · Science & Technology · GenomeIndia
- The National Quantum Mission includes which features? 1. Development of intermediate-scale quantum computers in roughly the 50–1000 physical-qubit range. 2. Four thematic hubs for major quantum-technology domains. Which is correct?2026 · Prelims GS1 · Science & Technology · National Quantum Mission
- Regarding India's Deep Ocean Mission: 1. It is administered by the Ministry of Ports, Shipping and Waterways. 2. Matsya-6000 is designed for a three-person crew. 3. Samudrayaan forms part of the mission. Which are correct?2026 · Prelims GS1 · Science & Technology · Deep Ocean Mission
- Regarding DHRUV64: 1. It is the third chip fabricated under the DIR-V programme aimed at enabling Indian microprocessors. 2. It is described as India's first indigenous 1.0 GHz 64-bit dual-core microprocessor. Which is correct?2026 · Prelims GS1 · Science & Technology · DHRUV64 microprocessor
- Regarding BIS standard IS 19445:2025 for bomb-disposal systems: 1. IS 19445:2025 is the relevant standard. 2. Standardized test/performance requirements can improve equipment interoperability across agencies. 3. It was co-developed by TBRL-DRDO with Russia's 30th Central Scientific Research Institute. Which are correct?2026 · Prelims GS1 · Science & Technology · Bomb disposal standards
- Which semiconductor-project location is NOT correctly matched?2026 · Prelims GS1 · Science & Technology · Semiconductor ecosystem
- Regarding the Bharat Forecast System, consider: 1. It is designed to enable very high-resolution forecasts down to local/Panchayat-cluster scales. 2. It was developed by IIT Delhi. Which is correct?2026 · Prelims GS1 · Science & Technology · Weather forecasting
- Regarding blockchain technology, consider: 1. Relevant participants can inspect shared records while accepted entries are resistant to alteration. 2. Copies of the ledger/database may be maintained across multiple network computers and synchronized. 3. A consortium blockchain is simply a hybrid of a fully public and a fully private blockchain that gives selective access to the public. 4. Consensus/cryptographic mechanisms make accepted records effectively immutable. Which are correct?2026 · Prelims GS1 · Science & Technology · Blockchain
- Consider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell-electric hybrid vehicles. How many of the above are considered as alternative powertrain vehicles?2025 · Prelims GS1 · Science & Technology · Science & Technology
- With reference to Unmanned Aerial Vehicles(UAVs), consider the following statements: I. All types of UAVs can do vertical landing. II. All types of UAVs can do automated hovering. III. All types of UAVs can use battery only as a source of power supply. How many of the statements given above are correct?2025 · Prelims GS1 · Science & Technology · Science & Technology
- In the context of electric vehicle batteries, consider the following elements: I. Cobalt II. Graphite III. Lithium IV. Nickel. How many of the above usually make up battery cathodes?2025 · Prelims GS1 · Science & Technology · Science & Technology
- The fusion energy programme in India has steadily evolved over the past few decades. Mention India’s contributions to the international fusion energy project – International Thermonuclear Experimental Reactor (ITER). What will be the implications of the success of this project for the future of global energy?2025 · Mains GS3 · Science & Technology · Fusion Energy and ITER
- What is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?2025 · Prelims GS1 · Science & Technology · Science & Technology
- How can India achieve energy independence through clean technology by 2047? How can biotechnology play a crucial role in this endeavour?2025 · Mains GS3 · Science & Technology · Clean Technology and Biotechnology
- Consider the following statements: I. It is expected that Majorana 1 chip will enable quantum computing. II. Majorana 1 chip has been introduced by Amazon Web Services (AWS). III. Deep learning is a subset of machine learning. Which of the statements given above are correct?2025 · Prelims GS1 · Science & Technology · Science & Technology
- With reference to monoclonal antibodies, often mentioned in news, consider the following statements: I. They are man-made proteins. II. They stimulate immunological function due to their ability to bind to specific antigens. III. They are used in treating viral infections. Which of the statements given above are correct?2025 · Prelims GS1 · Science & Technology · Science & Technology
- Consider the following statements: I. No virus can survive in ocean waters. II. No virus can infect bacteria. III. No virus can change the cellular transcriptional activity in host cells. How many of the statements given above are correct?2025 · Prelims GS1 · Science & Technology · Basic Science
- How does nanotechnology offer significant advancements in agriculture? How can this technology help to uplift the socio-economic status of farmers?2025 · Mains GS3 · Science & Technology · Nanotechnology in Agriculture
- India aims to become a semiconductor manufacturing hub. What are the challenges faced by the sector in India? Mention the salient features of the India Semiconductor Mission.2025 · Mains GS3 · Science & Technology · Semiconductor Manufacturing
- Consider the following pairs: Plant - Description. I. Cassava: Woody shrub II. Ginger: Herb with pseudostem III. Malabar spinach: Herbaceous climber IV. Mint: Annual shrub V. Papaya: Woody shrub. How many of the above pairs are correctly matched?2025 · Prelims GS1 · Science & Technology · Basic Science
- GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN? I. It is designed to provide additional accuracy and integrity. II. It will allow more uniform and high quality air traffic management. III. It will provide benefits only in aviation but not in other modes of transportation.2025 · Prelims GS1 · Science & Technology · Science & Technology
- Consider the following statements regarding AI Action Summit held in Grand Palais, Paris in February 2025: I. Co-chaired with India, the event builds on the advances made at the Bletchley Park Summit held in 2023 and the Seoul Summit held in 2024. II. Along with other countries US and UK also signed the declaration on inclusive and sustainable AI. Which of the statements given above is/are correct?2025 · Prelims GS1 · Science & Technology · Science & Technology
- Consider the following statements: Statement I: Some rare earth elements are used in the manufacture of flat television, screens and computer monitors, Statement II: Some rare earth elements have phosphorescent properties. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Science & Technology · Science & Technology
- Consider the following statements: I. Indian Railways have prepared a National Rail Plan(NRP) to create a future ready railway system by 2028. II. 'Kavach' an Automatic Train Protection system developed in collaboration with Germany. III. 'Kavach' system consists of RFID tags fitted on track in station section. Which of the statements given above are not correct?2025 · Prelims GS1 · Science & Technology · Science & Technology
- Consider the following space missions: I. Axiom-4 II. SpaDeX III. Gaganyaan. How many of the space missions given above encourage and support micro-gravity research?2025 · Prelims GS1 · Science & Technology · Science & Technology
- With reference to India's defence, consider the following pairs: Aircraft type: Description. I. Dornier-228: Maritime patrol aircraft II. IL-76: Supersonic combat aircraft III. C-17 Globemaster: Military transport aircraft. How many of the pairs given above are correctly matched?2025 · Prelims GS1 · Science & Technology · Science & Technology
- The doubter is a true man of science.2024 · Essay · Science & Technology · Scientific Temper
- Discuss the world IPR scenario for life materials and why India has low commercialisation despite high patent filing.2024 · Mains GS3 · Science & Technology · Intellectual Property Rights
- Social media is triggering fear of missing out among youth, causing depression and loneliness.2024 · Essay · Science & Technology · Social Media and Youth
- What technology is used for electronic toll collection? Explain its advantages, limits, proposed seamless changes and risks.2024 · Mains GS3 · Science & Technology · Electronic Toll Collection
- What are asteroids, how real is the extinction threat, and what strategies exist to prevent such catastrophe?2024 · Mains GS3 · Science & Technology · Asteroids
- Which one of the following words/phrases is most appropriately used to denote "an interoperable network of 3D virtual worlds that can be accessed simultaneously by millions of users, who can exert property rights over virtual items"?2024 · Prelims GS1 · Science & Technology · Current Affairs (S&T)
- With reference to radioisotope thermoelectric generators (RTGs), consider the following statements: 1. RTGs are miniature fission reactors. 2. RTGs are used for powering the onboard systems of spacecrafts. 3. RTGs can use Plutonium-238, which is a by-product of weapons development.2024 · Prelims GS1 · Science & Technology · Current Affairs (S&T)
- Consider the following statements: Statement-I: Giant stars live much longer than dwarf stars. Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.2024 · Prelims GS1 · Science & Technology · S&T
- Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?2024 · Prelims GS1 · Science & Technology · Basic Science
- Consider the following activities: 1. Identification of narcotics on passengers at airports or in aircraft 2. Monitoring of precipitation 3. Tracking the migration of animals. In how many of the above activities can the radars be used?2024 · Prelims GS1 · Science & Technology · S&T
- Consider the following aircraft: 1. Rafael 2. MiG-29 3. Tejas MK-1. How many of the above are considered fifth generation fighter aircraft?2024 · Prelims GS1 · Science & Technology · Current Affairs (S&T)
- In which of the following are hydrogels used? 1. Controlled drug delivery in patients 2. Mobile air-conditioning systems 3. Preparation of industrial lubricants2024 · Prelims GS1 · Science & Technology · Current Affairs (S&T)
- Introduce Artificial Intelligence and explain its role in clinical diagnosis. What privacy threats can arise from AI in healthcare?2023 · Mains GS3 · Science & Technology · AI in Healthcare
- Discuss ways in which microorganisms can help meet the current fuel shortage.2023 · Mains GS3 · Science & Technology · Microorganisms and Fuel
- Mathematics is the music of reason.2023 · Essay · Science & Technology · Mathematics and Reason
- Education is what remains after one has forgotten what one learned in school.2023 · Essay · Science & Technology · Education and Learning
- How do electric vehicles reduce carbon emissions, and what key benefits do they offer over combustion-engine vehicles?2023 · Mains GS3 · Science & Technology · Electric Vehicles
- Explain the main task of India’s third Moon mission, countries that achieved it, and the spacecraft system/launch-control role.2023 · Mains GS3 · Science & Technology · Chandrayaan Mission
- Carbon-fibre statements: used in automobile/aircraft components; once used it cannot be recycled. Which is correct?2023 · Prelims GS1 · Science & Technology · Advanced Materials
- How many listed actions use an accelerometer: crash-triggered airbags; laptop free-fall protection; phone screen orientation?2023 · Prelims GS1 · Science & Technology · Sensors
- In recirculating aquaculture, how many biofilter statements are correct: remove uneaten feed; convert ammonia to nitrate; increase phosphorus as fish nutrient?2023 · Prelims GS1 · Science & Technology · Aquaculture
- How many space-object pairs are correctly described: Cepheids as dust/gas clouds; nebulae as periodically varying stars; pulsars as neutron stars formed after massive-star collapse?2023 · Prelims GS1 · Science & Technology · Astronomy
- Which country has its own satellite navigation system among these?2023 · Prelims GS1 · Science & Technology · Satellite Navigation
- Missile statements: ballistic missiles are jet-propelled subsonically throughout while cruise missiles are initially rocket-powered; Agni-V is a medium-range cruise missile while BrahMos is an ICBM. Which is correct?2023 · Prelims GS1 · Science & Technology · Missile Technology
- How many statements about green hydrogen are correct: usable in internal-combustion engines; blendable with natural gas for heat/power; usable in fuel cells for vehicles?2023 · Prelims GS1 · Science & Technology · Green Hydrogen
- The Wolbachia method is discussed mainly in connection with what?2023 · Prelims GS1 · Science & Technology · Vector Control
- What does “aerial metagenomics” most closely mean?2023 · Prelims GS1 · Science & Technology · Metagenomics
- Microsatellite DNA is especially useful for which purpose?2023 · Prelims GS1 · Science & Technology · Genetics
- History is a series of victories won by the scientific man over the romantic man.2022 · Essay · Science & Technology · Science and History
- The increase in life expectancy in the country has led to newer health challenges in the community. What are those challenges and what steps need to be taken to meet them?2022 · Mains GS3 · Science & Technology · Health and Ageing
- Each year a large amount of plant material, cellulose, is deposited on the surface of planet Earth. What natural processes does this cellulose undergo before yielding carbon dioxide, water and other end products?2022 · Mains GS3 · Science & Technology · Cellulose Decomposition
- Launched on 25 December 2021, James Webb Space Telescope has been much in news since then. What are its unique features that make it superior to predecessor space telescopes? What are the key goals and potential benefits of this mission?2022 · Mains GS3 · Science & Technology · James Webb Space Telescope
- What is the basic principle behind vaccine development? How do vaccines work? What approaches were adopted by Indian vaccine manufacturers to produce COVID-19 vaccines?2022 · Mains GS3 · Science & Technology · Vaccine Development
- Which among Aarogya Setu, CoWIN, DigiLocker and DIKSHA were built on top of open-source digital platforms?2022 · Prelims GS1 · Science & Technology · Digital Public Infrastructure
- Regarding Web 3.0: (1) users can control their own data; (2) blockchain-based social networks can exist; (3) systems may be collectively operated by users rather than a single corporation. Which are correct?2022 · Prelims GS1 · Science & Technology · Web3 & Blockchain
- With reference to Software as a Service: (1) customers may configure interfaces/data fields within the application; (2) users may access data from mobile devices; (3) Outlook, Hotmail and Yahoo Mail are SaaS examples. Which are correct?2022 · Prelims GS1 · Science & Technology · Cloud Computing—SaaS
- What best describes a Fractional Orbital Bombardment System?2022 · Prelims GS1 · Science & Technology · Defence Technology—FOBS
- The term 'qubit' belongs to which field?2022 · Prelims GS1 · Science & Technology · Quantum Computing
- Which of these can be categorized as short-range communication devices/technologies: (1) CCTV; (2) RFID; (3) WLAN?2022 · Prelims GS1 · Science & Technology · Communication Technologies
- Biofilms: (1) can form on medical implants in the body; (2) can form on food and food-processing surfaces; (3) may show antibiotic resistance. Which are correct?2022 · Prelims GS1 · Science & Technology · Microbiology—Biofilms
- Regarding probiotics: (1) formulations may contain bacteria and yeasts; (2) probiotic organisms do not naturally occur in the human gut; (3) some probiotics help digest milk sugars. Which is correct?2022 · Prelims GS1 · Science & Technology · Probiotics & Microbiome
- For COVID-19 vaccines: (1) Covishield used an mRNA platform; (2) Sputnik V used a viral-vector platform; (3) Covaxin used an inactivated-virus platform. Which are correct?2022 · Prelims GS1 · Science & Technology · COVID-19 Vaccines
- A major solar storm can plausibly cause which effects: 1 GPS/navigation failures; 2 equatorial tsunamis; 3 power-grid damage; 4 widespread auroras; 5 forest fires over much of Earth; 6 satellite-orbit disturbances; 7 polar shortwave-radio disruption?2022 · Prelims GS1 · Science & Technology · Space Weather
- About polyethylene terephthalate (PET): (1) its fibres can be blended with wool/cotton; (2) PET containers are suitable for any alcoholic beverage; (3) PET bottles can be recycled into other products; (4) incinerating PET causes no greenhouse-gas emissions. Which are correct?2022 · Prelims GS1 · Science & Technology · Polymers—PET
- In the context of quantum computing, what is the significance of superposition?2022 · Prelims GS1 · Science & Technology · Quantum Computing
- What is the principal role of B cells and T cells in the human body?2022 · Prelims GS1 · Science & Technology · Adaptive Immunity
- Regarding nanoparticles: (1) they occur only through human manufacture; (2) some metallic-oxide nanoparticles are used in cosmetics; (3) nanoparticles released from some commercial products can pose environmental or human-health risks. Which is correct?2022 · Prelims GS1 · Science & Technology · Nanotechnology & Safety
- DNA barcoding can be used to: (1) determine the age of a plant or animal; (2) distinguish visually similar species; (3) detect unwanted animal/plant material in processed foods. Which is correct?2022 · Prelims GS1 · Science & Technology · DNA Barcoding
- The process of self-discovery has now been technologically outsourced.2021 · Essay · Science & Technology · Self Discovery and Technology
- How is the S-400 air defence system technically superior to any other system presently available in the world?2021 · Mains GS3 · Science & Technology · S-400 Air Defence
- What is research, but a blind date with knowledge!2021 · Essay · Science & Technology · Research and Knowledge
- Explain the purpose of the Green Grid Initiative launched at the World Leaders Summit of the COP26 UN Climate Change Conference in Glasgow in November 2021. When was this idea first floated in the International Solar Alliance?2021 · Mains GS3 · Science & Technology · Green Grid Initiative
- What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of society?2021 · Mains GS3 · Science & Technology · Applied Biotechnology
- The Nobel Prize in Physics of 2014 was jointly awarded for the invention of Blue LEDs in the 1990s. How has this invention impacted the everyday life of human beings?2021 · Mains GS3 · Science & Technology · Blue LEDs
- Describe the major outcomes of the 26th session of the Conference of the Parties to the United Nations Framework Convention on Climate Change. What are the commitments made by India at this conference?2021 · Mains GS3 · Science & Technology · COP26
- Regarding recombinant-vector vaccines, consider: (1) genetic engineering is used in their development; (2) bacteria or viruses can serve as vectors. Which is correct?2021 · Prelims GS1 · Science & Technology · Vaccines & Biotechnology
- In relation to mitochondrial disease, examine: (1) mitochondrial replacement techniques can prevent transmission and may be performed in connection with IVF; (2) pathogenic mitochondrial DNA is inherited maternally rather than from the father. Which is correct?2021 · Prelims GS1 · Science & Technology · Genetics & Reproductive Technology
- Bollgard I and Bollgard II are technologies associated with which field?2021 · Prelims GS1 · Science & Technology · GM Crops
- In a pressure cooker, the equilibrium cooking temperature depends mainly on: (1) the vent-hole area; (2) flame temperature; (3) the weight/pressure regulator on the lid. Which factors matter?2021 · Prelims GS1 · Science & Technology · Heat & Pressure
- Which among these can be cultured on artificial or synthetic nutrient media: (1) bacteria; (2) fungi; (3) viruses?2021 · Prelims GS1 · Science & Technology · Microbiology
- Consider: (1) adenoviruses possess single-stranded DNA while retroviruses possess double-stranded DNA; (2) some common colds are caused by adenoviruses, while AIDS is caused by a retrovirus. Which is correct?2021 · Prelims GS1 · Science & Technology · Virology
- Why can water dissolve an unusually wide range of substances?2021 · Prelims GS1 · Science & Technology · Chemistry of Water
- For street lighting, compare sodium lamps with LEDs: (1) sodium lamps radiate broadly in many directions whereas LED fixtures can be directional; (2) sodium lamps generally last longer than LEDs; (3) sodium light is nearly monochromatic whereas LEDs offer much better colour rendering. Which are correct?2021 · Prelims GS1 · Science & Technology · Lighting Technology
- The receptor/protein term 'ACE2' became widely discussed in relation to what?2021 · Prelims GS1 · Science & Technology · COVID-19 Biology
- Bisphenol-A (BPA), a chemical of health concern, is a key building block of which plastic?2021 · Prelims GS1 · Science & Technology · Polymers & Health
- Triclosan, which can be harmful with high or prolonged exposure, has commonly been used in which category of products?2021 · Prelims GS1 · Science & Technology · Chemicals in Consumer Products
- Why are astronomical distances conveniently expressed in light-years?2021 · Prelims GS1 · Science & Technology · Astronomy
- Regarding carbon nanotubes, consider: (1) they can carry drugs or antigens in the body; (2) they can form artificial blood capillaries for injured tissue; (3) they can be used in biochemical sensors; (4) some carbon nanotubes can be biodegradable. Which statements are correct?2020 · Prelims GS1 · Science & Technology · Nanotechnology
- Which activities can present-day drone technology successfully perform? (1) spraying pesticides over crops; (2) inspecting craters of active volcanoes; (3) collecting breath samples from spouting whales for DNA analysis.2020 · Prelims GS1 · Science & Technology · Drones & Remote Sensing
- A planned space observatory uses three spacecraft flying as an enormous equilateral triangle with laser links between them to detect gravitational waves. Which mission concept does this describe?2020 · Prelims GS1 · Science & Technology · Space Science & Gravitational Waves
- Which are technically possible in modern biomedical research? (1) introducing genetic changes into cells that form eggs or sperm; (2) editing a human genome at an early embryonic stage; (3) introducing human induced pluripotent stem cells into a pig embryo.2020 · Prelims GS1 · Science & Technology · Genome Editing & Stem Cells
- Why are pneumococcal conjugate vaccines important? (1) they protect against pneumococcal pneumonia, meningitis and sepsis; (2) vaccination can reduce infections requiring antibiotics, including those involving resistant bacteria; (3) they have absolutely no side effects or allergic reactions.2020 · Prelims GS1 · Science & Technology · Vaccines & Public Health
- What do you understand by nanotechnology and how is it helping in the health sector?2020 · Mains GS3 · Science & Technology · Nanotechnology
- In India, the expression Public Key Infrastructure (PKI) is primarily associated with which field?2020 · Prelims GS1 · Science & Technology · Cybersecurity & Cryptography
- How is science interwoven deeply with our lives? What are the striking changes in agriculture triggered off by the science-based technologies?2020 · Mains GS3 · Science & Technology · Science in Agriculture
- Which statements correctly distinguish typical plant and animal cells? (1) plant cells possess cellulose cell walls whereas animal cells do not; (2) plant cells lack a plasma membrane; (3) a mature plant cell commonly has one large central vacuole while animal cells may have smaller vacuoles.2020 · Prelims GS1 · Science & Technology · Cell Biology
- Technology as the silent factor in international relations2020 · Essay · Science & Technology · Technology As The Silent
- COVID-19 pandemic has caused unprecedented devastation worldwide. However, technological advancements are being availed readily to win over the crisis. Give an account of how technology was sought to aid management of the pandemic.2020 · Mains GS3 · Science & Technology · COVID-19
- Describe the benefits of deriving electric energy from sunlight in contrast to the conventional energy generation. What are the initiatives offered by our Government for this purpose?2020 · Mains GS3 · Science & Technology · Solar Energy
- In reproductive medicine, “pronuclear transfer” is a technique principally used to do what?2020 · Prelims GS1 · Science & Technology · Reproductive Technology & Mitochondria
- At the level of AI development considered by UPSC in 2020, which applications were accepted as effective? (1) reducing electricity consumption in industrial units; (2) producing meaningful short stories and songs; (3) disease diagnosis; (4) text-to-speech conversion; (5) wireless transmission of electrical energy.2020 · Prelims GS1 · Science & Technology · Artificial Intelligence Applications
- Regarding Visible Light Communication (VLC), which are correct? (1) it operates roughly in the visible spectrum of 375–780 nm; (2) it is inherently a long-range optical wireless system; (3) it can support data rates exceeding Bluetooth; (4) it avoids radio-frequency electromagnetic interference.2020 · Prelims GS1 · Science & Technology · Visible Light Communication
- Concerning blockchain, consider: (1) a blockchain can function as a ledger inspectable by participants without control by a single user; (2) blockchain data can concern only cryptocurrencies; (3) permissionless applications can be built using basic blockchain features. Which are correct?2020 · Prelims GS1 · Science & Technology · Blockchain & Distributed Ledgers
- Why are some Indian civilian nuclear reactors placed under IAEA safeguards while others are outside such safeguards?2020 · Prelims GS1 · Science & Technology · Nuclear Energy & IAEA Safeguards
- Individual cyber-insurance policies can commonly cover which losses/costs? (1) restoration of a computer system after malware disrupts access; (2) replacement of a computer physically damaged by a miscreant; (3) hiring a specialist to mitigate cyber-extortion losses; (4) legal defence costs arising from a third-party cyber claim.2020 · Prelims GS1 · Science & Technology · Cybersecurity & Cyber Insurance
- On LTE and VoLTE technologies, evaluate: (1) LTE is generally marketed as 3G whereas VoLTE is an advanced form of 3G; (2) LTE carries only data while VoLTE carries only voice. Which is correct?2019 · Prelims GS1 · Science & Technology · Telecommunications
- How did India benefit from the contributions of Sir M. Visvesvaraya and Dr. M. S. Swaminathan in the fields of water engineering and agricultural science respectively?2019 · Mains GS3 · Science & Technology · Science and Engineering
- What is India's plan to have its own space station and how will it benefit our space programme?2019 · Mains GS3 · Science & Technology · Space Programme
- Rise of Artificial Intelligence: the threat of a jobless future or better job opportunities through reskilling and upskilling.2019 · Essay · Science & Technology · Right to Information
- How is the Government of India protecting traditional knowledge of medicine from patenting by pharmaceutical companies?2019 · Mains GS3 · Science & Technology · Traditional Knowledge Digital Library
- How can biotechnology improve the living standards of farmers?2019 · Mains GS3 · Science & Technology · Agricultural Biotechnology
- Which jurisdiction enacted the General Data Protection Regulation (GDPR) in 2016 and began applying it from 25 May 2018?2019 · Prelims GS1 · Science & Technology · Data Protection & Privacy
- Under Indian intellectual-property law as applicable at the time of the examination, consider: (1) an essentially biological process for producing seed is patentable; (2) India has no Intellectual Property Appellate Board; (3) plant varieties are excluded from patentability. Which is correct?2019 · Prelims GS1 · Science & Technology · Intellectual Property & Patents
- For entertainment technologies, assess these statements: (1) AR replaces the physical world with a fully simulated environment; (2) VR overlays computer-generated images onto real surroundings; (3) AR enhances a real-world view through a phone or computer camera; (4) VR immerses the user in a simulated environment. Which are correct?2019 · Prelims GS1 · Science & Technology · Augmented & Virtual Reality
- The term “Denisovan”, sometimes seen in scientific news, refers to what?2019 · Prelims GS1 · Science & Technology · Human Evolution & Genetics
- Which statement about modern biotechnology was considered incorrect in the 2019 paper?2019 · Prelims GS1 · Science & Technology · Biotechnology & Synthetic Biology
- Which statement correctly describes a digital signature? (1) it is an electronic record identifying the certifying authority; (2) it is primarily an identity credential used to access an internet server; (3) it electronically signs a document and helps verify that its content has not been altered.2019 · Prelims GS1 · Science & Technology · Cybersecurity & Digital Signatures
- Which tasks can wearable devices perform? (1) identify a user’s location; (2) monitor sleep; (3) assist persons with hearing impairment.2019 · Prelims GS1 · Science & Technology · Wearable Technology
- RNA interference (RNAi) has attracted attention because it can be used for which purposes? (1) gene-silencing therapies; (2) potential cancer therapies; (3) hormone-replacement therapy; (4) developing crops resistant to viral pathogens.2019 · Prelims GS1 · Science & Technology · RNA Interference & Gene Silencing
- Scientists detected a merger of massive black holes billions of light-years away. What was the key significance of that observation?2019 · Prelims GS1 · Science & Technology · Gravitational Waves & Black Holes
- Which factors contribute to multi-drug resistance among microbial pathogens in India? (1) genetic predisposition of some people; (2) incorrect antibiotic dosing; (3) antibiotic use in livestock; (4) having multiple chronic illnesses.2019 · Prelims GS1 · Science & Technology · Antimicrobial Resistance
- What is the Cas9 protein commonly mentioned in the context of CRISPR technology?2019 · Prelims GS1 · Science & Technology · CRISPR & Gene Editing
- Which statement about hepatitis was incorrect?2019 · Prelims GS1 · Science & Technology · Human Health & Infectious Diseases
- Atal Innovation Mission operates under which institution?2019 · Prelims GS1 · Science & Technology · Innovation Policy
- For hydrogen-enriched CNG (H-CNG) in public buses, consider: (1) it completely eliminates CO emissions; (2) it can reduce CO2 and hydrocarbon emissions; (3) hydrogen around one-fifth by volume can be blended with CNG; (4) it necessarily costs less than conventional CNG. Which are correct?2019 · Prelims GS1 · Science & Technology · Alternative Fuels - H-CNG
- Remote-sensing and satellite data can be used to estimate which of the following at a specific location? (1) vegetation chlorophyll content; (2) greenhouse-gas emissions associated with rice paddies; (3) land-surface temperature.2019 · Prelims GS1 · Science & Technology · Remote Sensing Applications
- Why is the Indian Regional Navigational Satellite System (IRNSS) needed? How does it help in navigation?2018 · Mains GS1 · Science & Technology · IRNSS
- Discuss the work of Bose-Einstein Statistics done by Prof. Satyendra Nath Bose and show how it revolutionized the field of physics.2018 · Mains GS3 · Science & Technology · Bose Einstein Statistics
- Why is there so much activity in the field of biotechnology in our country? How has this activity benefitted the field of biopharma?2018 · Mains GS3 · Science & Technology · Biotechnology
- With growing energy needs, should India keep on extending its nuclear energy programme? Discuss the facts and fears associated with nuclear energy.2018 · Mains GS3 · Science & Technology · Nuclear Energy
- The identity platform Aadhaar provides open Application Programming Interfaces (APIs). What does it imply? 1. It can be integrated into any electronic device. 2. Online authentication using iris is possible. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- Which of the following is/are the aim/aims of the Digital India Plan of the Government of India? 1. Formation of India's own Internet companies like China did. 2. Establish a policy framework to encourage overseas multinational corporations that collect Big Data to build their large data centres within our national geographical boundaries. 3. Connect many of our villages to the Internet and bring Wi-Fi to many of our schools, public places and major tourist centres. Select the correct answer using the code given below.2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3. Controlling the power grids. Select the correct answer using the code given below.2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- Consider the following statements: 1. The Earth's magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. 3. When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- The terms "WannaCry, Petya and EternalBlue" sometimes mentioned in the news recently are related to:2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements: 1. IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits. 2. IRNSS covers entire India and about 5500 sq. km beyond its borders. 3. India will have its own satellite navigation system with full global coverage by the middle of 2019. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- Consider the following phenomena: 1. Light is affected by gravity. 2. The Universe is constantly expanding. 3. Matter warps its surrounding space-time. Which of the above is/are the prediction/predictions of Albert Einstein's General Theory of Relativity, often discussed in media?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements: 1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests. 2. GM mustard has the genes that allow the plant cross-pollination and hybridization. 3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- Consider the following pairs: 1. Belle II experiment — Artificial Intelligence 2. Blockchain technology — Digital/Cryptocurrency 3. CRISPR-Cas9 — Particle Physics. Which of the pairs given above is/are correctly matched?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm, which causes your geyser to switch on automatically. A smart mirror shows the day's weather and water level; your refrigerator recognizes a shortage of groceries and places an order; locking the house switches appliances off; and your car warns about traffic and communicates delays. In the context of emerging communication technologies, which term best applies to this scenario?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- "3D printing" has applications in which of the following? 1. Preparation of confectionery items 2. Manufacture of bionic ears 3. Automotive industry 4. Reconstructive surgeries 5. Data processing technologies. Select the correct answer using the code given below.2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- Consider the following statements: 1. The Barren Island volcano is an active volcano located in Indian territory. 2. Barren Island lies about 140 km east of Great Nicobar. 3. The last time the Barren Island volcano erupted was in 1991 and it has remained inactive since then. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- With reference to India's satellite launch vehicles, consider the following statements: 1. PSLVs launch satellites useful for Earth-resources monitoring whereas GSLVs are designed mainly to launch communication satellites. 2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth. 3. GSLV Mk III is a four-stage launch vehicle with the first and third stages using solid rocket motors and the second and fourth stages using liquid rocket engines. Which of the statements given above is/are correct?2018 · Prelims GS1 · Science & Technology · Technology, Space & Applied Science
- How does the Juno Mission of NASA help to understand the origin and evolution of the Earth?2017 · Mains GS1 · Science & Technology · Juno Mission
- Stem cell therapy is gaining popularity in India to treat a wide variety of medical conditions including leukaemia, thalassemia, damaged cornea and several burns. Describe briefly what stem cell therapy is and what advantages it has over other treatments.2017 · Mains GS3 · Science & Technology · Stem Cell Therapy
- India has achieved remarkable successes in unmanned space missions including Chandrayaan and Mars Orbiter Mission, but has not ventured into manned space mission. Explain critically in terms of technology and logistics.2017 · Mains GS3 · Science & Technology · Manned Space Mission
- Which of the following statements is/are correct regarding Smart India Hackathon 2017? 1. It is a centrally sponsored scheme for developing every city into Smart Cities in a decade. 2. It is an initiative to identify digital technology innovations for solving problems faced by the country. 3. It aims to make all financial transactions completely digital in a decade.2017 · Prelims GS1 · Science & Technology · Digital Innovation
- Give an account of the growth and development of nuclear science and technology in India. What is the advantage of the fast breeder reactor programme in India?2017 · Mains GS3 · Science & Technology · Nuclear Technology
- Consider the following statements: 1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue. 2. Sexual transmission of Zika virus disease is possible. Which is/are correct?2017 · Prelims GS1 · Science & Technology · Zika Virus
- The terms Event Horizon, Singularity, String Theory and Standard Model are sometimes seen in the news in the context of2017 · Prelims GS1 · Science & Technology · Astrophysics
- With reference to agriculture in India, how can genome sequencing be used in the immediate future? 1. Identify genetic markers for disease resistance and drought tolerance in crops. 2. Reduce time required to develop new crop varieties. 3. Decipher host-pathogen relationships in crops.2017 · Prelims GS1 · Science & Technology · Genomics in Agriculture
- Consider the following pairs of materials and unwanted/controversial chemicals likely to be found in them: 1. Lipstick — Lead 2. Soft drinks — Brominated vegetable oils 3. Chinese fast food — Monosodium glutamate. Which are correctly matched?2017 · Prelims GS1 · Science & Technology · Chemistry in Everyday Life
- OLEDs are used to create digital displays. What are advantages of OLED over LCD? 1. Can be fabricated on flexible plastic substrates 2. Roll-up displays embedded in clothing can be made 3. Transparent displays are possible2017 · Prelims GS1 · Science & Technology · Display Technology
- What is the application of Somatic Cell Nuclear Transfer Technology?2017 · Prelims GS1 · Science & Technology · Cloning
- In India, it is legally mandatory for which of the following to report cyber-security incidents? 1. Service providers 2. Data centres 3. Body corporate2017 · Prelims GS1 · Science & Technology · Cyber Security
- What is the purpose of the evolved Laser Interferometer Space Antenna (eLISA) project?2017 · Prelims GS1 · Science & Technology · Gravitational Waves
- With reference to LiFi, recently in the news, which of the following statements is/are correct? 1. It uses light as the medium for high-speed data transmission. 2. It is a wireless technology and is several times faster than WiFi. Select the correct answer using the code given below.2016 · Prelims GS1 · Science & Technology · Communication Technology
- Cyberspace and internet: Blessing or curse to the human civilization in the long run.2016 · Essay · Science & Technology · Cyberspace and Internet
- Discuss India’s achievements in the field of Space Science and Technology. How has the application of this technology helped India in its socio-economic development?2016 · Mains GS3 · Science & Technology · Space Technology
- Why is nanotechnology one of the key technologies of the 21st century? Describe the salient features of Indian Government’s Mission on Nanoscience and Technology and the scope of its application in the development process of the country.2016 · Mains GS3 · Science & Technology · Nanotechnology
- In the context of developments in Bioinformatics, the term transcriptome, sometimes seen in the news, refers to2016 · Prelims GS1 · Science & Technology · Bioinformatics
- 'Project Loon', sometimes seen in the news, is related to2016 · Prelims GS1 · Science & Technology · Communication Technology
- Which one of the following is the best description of INS Astradharini, that was in the news recently?2016 · Prelims GS1 · Science & Technology · Defence Technology
- What is Greased Lightning-10 (GL-10), recently in the news?2016 · Prelims GS1 · Science & Technology · Aviation Technology
- Which of the following statements is/are correct? Viruses can infect 1. bacteria 2. fungi 3. plants. Select the correct answer using the code given below.2016 · Prelims GS1 · Science & Technology · Virology
- With reference to Bitcoins, sometimes seen in the news, which of the following statements is/are correct? 1. Bitcoins are tracked by the Central Banks of the countries. 2. Anyone with a Bitcoin address can send and receive Bitcoins from anyone else with a Bitcoin address. 3. Online payments can be sent without either side knowing the identity of the other. Select the correct answer using the code given below.2016 · Prelims GS1 · Science & Technology · Blockchain and Cryptocurrency
- India is an important member of the International Thermonuclear Experimental Reactor. If this experiment succeeds, what is the immediate advantage for India?2016 · Prelims GS1 · Science & Technology · Nuclear Fusion and ITER
- With reference to Astrosat, the astronomical observatory launched by India, which of the following statements is/are correct? 1. Other than USA and Russia, India is the only country to have launched a similar observatory into space. 2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above Earth. Select the correct answer using the code given below.2016 · Prelims GS1 · Science & Technology · Space Astronomy
- Consider the following statements: The Mangalyaan launched by ISRO 1. is also called the Mars Orbiter Mission 2. made India the second country to have a spacecraft orbit Mars after USA 3. made India the only country to be successful in making its spacecraft orbit Mars in its very first attempt. Which of the statements given above is/are correct?2016 · Prelims GS1 · Science & Technology · Space Missions
- Technology cannot replace manpower.2015 · Essay · Science & Technology · Technology and Labour
- Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)? 1. NIF is an autonomous body of the Department of Science and Technology under the Central Government. 2. NIF is an initiative to strengthen highly advanced scientific research in premier institutions in collaboration with foreign institutions.2015 · Prelims GS1 · Science & Technology · National Innovation Foundation
- What do you understand by Standard Positioning System and Precision Positioning System in the GPS era? Discuss the advantage India perceives from its ambitious IRNSS programme employing just seven satellites.2015 · Mains GS3 · Science & Technology · GPS and IRNSS
- What are the areas of prohibitive labour that can be sustainably managed by robots? Discuss the initiatives that can propel research in premier research institutes for substantive and gainful innovation.2015 · Mains GS3 · Science & Technology · Robotics
- Discuss the advantages and security implications of cloud hosting of servers vis-a-vis in-house machine-based hosting for government business.2015 · Mains GS3 · Science & Technology · Cloud Hosting
- India’s Traditional Knowledge Digital Library, which has a database containing formatted information on more than two million medicinal formulations, is proving a powerful weapon in the country’s fight against erroneous patents. Discuss the pros and cons of making the database available publicly under open-source licensing.2015 · Mains GS3 · Science & Technology · Traditional Knowledge Digital Library
- Among the following, which were frequently mentioned in the news for the outbreak of Ebola virus recently?2015 · Prelims GS1 · Science & Technology · Ebola
- With reference to use of nanotechnology in the health sector, which statements are correct? 1. Targeted drug delivery is made possible by nanotechnology. 2. Nanotechnology can contribute to gene therapy.2015 · Prelims GS1 · Science & Technology · Nanotechnology in Health
- In the context of modern scientific research, consider the following statements about IceCube, a particle detector located at the South Pole: 1. It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice. 2. It is a powerful telescope to search for dark matter. 3. It is buried deep in the ice. Which are correct?2015 · Prelims GS1 · Science & Technology · IceCube Neutrino Observatory
- With reference to Near Field Communication (NFC) Technology, which statements are correct? 1. It is a contactless communication technology that uses electromagnetic radio fields. 2. NFC is designed for devices that can be at a distance of even a metre from each other. 3. NFC can use encryption when sending sensitive information.2015 · Prelims GS1 · Science & Technology · NFC
- The term “Goldilocks Zone” is often seen in the news in the context of2015 · Prelims GS1 · General Studies, Science & Technology · UPSC Prelims 2015 GS Paper I, Habitable Zone
- Indira Gandhi Prize for Peace, Disarmament and Development for 2014 was given to2015 · Prelims GS1 · General Studies, Science & Technology · UPSC Prelims 2015 GS Paper I, ISRO
- The Genetic Engineering Appraisal Committee is constituted under the2015 · Prelims GS1 · General Studies, Science & Technology · UPSC Prelims 2015 GS Paper I, GEAC
- In which of the following activities are Indian Remote Sensing (IRS) satellites used? 1. Assessment of crop productivity 2. Locating groundwater resources 3. Mineral exploration 4. Telecommunications 5. Traffic studies2015 · Prelims GS1 · Science & Technology · Remote Sensing
- The term “IndARC”, sometimes seen in the news, is the name of2015 · Prelims GS1 · Science & Technology · Polar Research
- H1N1 virus is sometimes mentioned in the news with reference to which disease?2015 · Prelims GS1 · General Studies, Science & Technology · UPSC Prelims 2015 GS Paper I, H1N1
- With reference to bio-toilets used by Indian Railways, consider: 1. Decomposition of human waste is initiated by a fungal inoculum. 2. Ammonia and water vapour are the only end products released into the atmosphere. Which is/are correct?2015 · Prelims GS1 · Science & Technology · Bio-toilets
- With reference to fuel cells in which hydrogen-rich fuel and oxygen generate electricity, consider: 1. If pure hydrogen is used, the fuel cell emits heat and water as by-products. 2. Fuel cells can power buildings but not small devices like laptops. 3. Fuel cells produce electricity in AC form. Which is/are correct?2015 · Prelims GS1 · Science & Technology · Fuel Cells
- Scientific research in Indian universities is declining because a career in science is not as attractive as business professions, engineering or administration, and universities are becoming consumer-oriented. Critically comment.2014 · Mains GS3 · Science & Technology · Scientific Research
- Can overuse and free availability of antibiotics without doctor’s prescription be contributors to the emergence of drug-resistant diseases in India? What are the available mechanisms for monitoring and control? Critically discuss the issues involved.2014 · Mains GS3 · Science & Technology · Drug Resistance
- In a globalized world, Intellectual Property Rights assume significance and are a source of litigation. Broadly distinguish between copyrights, patents and trade secrets.2014 · Mains GS3 · Science & Technology · IPR
- Consider the following pairs: 1. Vitamin C — Scurvy 2. Vitamin D — Rickets 3. Vitamin E — Night blindness. Which of the pairs given above is/are correctly matched?2014 · Prelims GS1 · Science & Technology · Vitamins
- There is concern regarding nanoparticles of some chemical elements used by industry. Why? 1. They can accumulate in the environment and contaminate water and soil. 2. They can enter food chains. 3. They can trigger production of free radicals.2014 · Prelims GS1 · Science & Technology · Nanotechnology Risks
- With reference to Agni-IV missile, which of the following statements is/are correct? 1. It is a surface-to-surface missile. 2. It is fuelled by liquid propellant only. 3. It can deliver one-tonne nuclear warheads about 7500 km away.2014 · Prelims GS1 · Science & Technology · Missile Technology
- With reference to coalbed methane and shale gas, consider the following statements: 1. Coalbed methane is pure methane extracted from coal seams, while shale gas is a mixture of propane and butane only. 2. India has abundant coalbed methane sources, but so far no shale gas sources have been found. Which is/are correct?2014 · Prelims GS1 · Science & Technology · Unconventional Hydrocarbons
- With reference to Neem tree, consider the following statements: 1. Neem oil can be used as a pesticide to control some insects and mites. 2. Neem seeds are used in manufacture of biofuels and hospital detergents. 3. Neem oil has applications in pharmaceutical industry. Which is/are correct?2014 · Prelims GS1 · Science & Technology · Neem Applications
- Which one of the following is the process involved in photosynthesis?2014 · Prelims GS1 · Science & Technology · Photosynthesis
- In addition to fingerprint scanning, which of the following can be used in biometric identification of a person? 1. Iris scanning 2. Retinal scanning 3. Voice recognition2014 · Prelims GS1 · Science & Technology · Biometrics
- Which of the following statements is/are correct regarding vegetative propagation of plants? 1. It produces a clonal population. 2. It helps in eliminating viruses. 3. It can be practiced most of the year.2014 · Prelims GS1 · Science & Technology · Plant Propagation
- Which of the following pairs is/are correctly matched? 1. Cassini-Huygens — Orbiting Venus and transmitting data to Earth 2. Messenger — Mapping and investigating Mercury 3. Voyager 1 and 2 — Exploring the outer solar system2014 · Prelims GS1 · Science & Technology · Space Missions
- Which of the following is/are example/examples of chemical change? 1. Crystallization of sodium chloride 2. Melting of ice 3. Souring of milk2014 · Prelims GS1 · Science & Technology · Chemical Changes
- Consider the following techniques/phenomena: 1. Budding and grafting in fruit plants 2. Cytoplasmic male sterility 3. Gene silencing. Which of the above is/are used to create transgenic crops?2014 · Prelims GS1 · Science & Technology · Crop Biotechnology
- Among the following organisms, which one does not belong to the class of the other three?2014 · Prelims GS1 · Science & Technology · Animal Classification
- With reference to technologies for solar-power production, consider the following statements: 1. Photovoltaics directly converts light to electricity, while solar thermal uses solar heat in an electricity-generation process. 2. Photovoltaics generates AC while solar thermal generates DC. 3. India has a manufacturing base for solar thermal but not for photovoltaics. Which is/are correct?2014 · Prelims GS1 · Science & Technology · Solar Energy
- Consider the following diseases: 1. Diphtheria 2. Chickenpox 3. Smallpox. Which of the above diseases has/have been eradicated in India?2014 · Prelims GS1 · Science & Technology · Disease Eradication
- Which of the following phenomena might have influenced the evolution of organisms? 1. Continental drift 2. Glacial cycles2014 · Prelims GS1 · Science & Technology · Evolution
- Consider the following: 1. Bats 2. Bears 3. Rodents. Hibernation can be observed in which of the above kinds of animals?2014 · Prelims GS1 · Science & Technology · Hibernation
- Science and Technology Is The Panacea For The Growth and Security Of The Nation.2013 · Essay · Science & Technology · Growth and Security
- Recombinant DNA technology (Genetic Engineering) allows genes to be transferred: 1. across different species of plants 2. from animals to plants 3. from microorganisms to higher organisms. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Genetic Engineering
- Bring out the circumstances in 2005 which forced amendment to section 3(d) in the Indian Patent Law, 1970. Discuss how it has been utilized by Supreme Court in its judgment rejecting Novartis patent application for Glivec. Discuss briefly the pros and cons of the decision.2013 · Mains GS3 · Science & Technology · Patent Law and Glivec
- What do you understand by fixed dose drug combinations? Discuss their merits and demerits.2013 · Mains GS3 · Science & Technology · Fixed Dose Combinations
- What do you understand by Umpire Decision Review in cricket? Discuss its various components. Explain how silicon tape on the edge of a bat may fool the system.2013 · Mains GS3 · Science & Technology · Decision Review System
- What is digital signature? What does its authentication mean? Give various salient built-in features of a digital signature.2013 · Mains GS3 · Science & Technology · Digital Signature
- How does the 3D printing technology work? List out the advantages and disadvantages of the technology.2013 · Mains GS3 · Science & Technology · 3D Printing
- What is an FRP composite material? How are they manufactured? Discuss their applications in aviation and automobile industry.2013 · Mains GS3 · Science & Technology · FRP Composite
- Improper handling and storage of cereal grains and oilseeds result in production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by2013 · Prelims GS1 · Science & Technology · Food Safety and Mycotoxins
- Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by2013 · Prelims GS1 · Science & Technology · Food Safety and Aflatoxins
- Which of the following diseases can be transmitted from one person to another through tattooing? 1. Chikungunya 2. Hepatitis B 3. HIV-AIDS2013 · Prelims GS1 · Science & Technology · Communicable Diseases
- Which of the following diseases can be transmitted from one person to another through tattooing? 1. Chikungunya 2. Hepatitis B 3. HIV-AIDS. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Disease Transmission
- Consider the following minerals: 1. Calcium 2. Iron 3. Sodium. Which of the minerals given above is/are required by human body for contraction of muscles?2013 · Prelims GS1 · Science & Technology · Human Physiology
- Consider the following minerals: 1. Calcium 2. Iron 3. Sodium. Which of the minerals given above is/are required by human body for the contraction of muscles?2013 · Prelims GS1 · Science & Technology · Minerals and Muscle Function
- During a thunderstorm, the thunder in the skies is produced by the 1. meeting of cumulonimbus clouds in the sky 2. lightning that separates the nimbus clouds 3. violent upward movement of air and water particles. Select the correct answer.2013 · Prelims GS1 · Science & Technology · Thunder and Lightning
- During a thunderstorm, the thunder in the skies is produced by the 1. meeting of cumulonimbus clouds in the sky 2. lightning that separates the nimbus clouds 3. violent upward movement of air and water particles. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Thunder and Lightning
- Fruits stored in a cold chamber exhibit longer storage life because2013 · Prelims GS1 · Science & Technology · Plant Physiology, Plant Respiration and Cold Storage
- Ball bearings are used in bicycles, cars, etc., because2013 · Prelims GS1 · Science & Technology · Friction, Friction and Ball Bearings
- Consider the following phenomena: 1. Size of the sun at dusk 2. Colour of the sun at dawn 3. Moon being visible at dawn 4. Twinkle of stars in the sky 5. Polestar being visible in the sky. Which of the above are optical illusions?2013 · Prelims GS1 · Science & Technology · Optics and Atmosphere, Atmospheric Optics
- Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? 1. Dispersion 2. Refraction 3. Internal reflection2013 · Prelims GS1 · Science & Technology · Optics
- Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? 1. Dispersion 2. Refraction 3. Internal reflection. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Rainbow Formation
- Many transplanted seedlings do not grow because2013 · Prelims GS1 · Science & Technology · Plant Physiology, Plant Transplantation
- Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only.2013 · Prelims GS1 · Science & Technology · Viruses
- Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Viruses
- The known forces of nature can be divided into four classes: gravity, electromagnetism, weak nuclear force and strong nuclear force. Which one of the following statements is not correct?2013 · Prelims GS1 · Science & Technology · Fundamental Forces
- The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct?2013 · Prelims GS1 · Science & Technology · Fundamental Forces
- The efforts to detect the existence of Higgs boson particle have become frequent news. What is/are the importance/importances of discovering this particle? 1. It will enable us to understand as to why elementary particles have mass. 2. It will enable us in the near future to develop technology to transfer matter from one point to another without traversing the physical space between them. 3. It will enable us to create better fuels for nuclear fission.2013 · Prelims GS1 · Science & Technology · Particle Physics
- The efforts to detect the existence of Higgs boson particle have become frequent news in the recent past. What is/are the importance/importances of discovering this particle? 1. It will enable us to understand as to why elementary particles have mass. 2. It will enable us in the near future to develop the technology of transferring matter from one point to another without traversing the physical space between them. 3. It will enable us to create better fuels for nuclear fission. Select the correct answer using the codes given below.2013 · Prelims GS1 · Science & Technology · Higgs Boson