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General Science Vault (2013–2026)

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Practice high-yield UPSC Prelims General Science PYQs (2013–2026). Interactive drill with instant explanations covering biology, biotechnology, physics & chemistry.

1 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to the National Quantum Mission (NQM) is/are correct?
1. It aims at developing intermediate-scale quantum computers with 50-1000 physical qubits.
2. Its implementation includes setting up of four Thematic Hubs (T-Hubs) in academic and national R&D institutes across India.

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2 / 49

Category: General Science

[UPSC CSE 2026]
Consider the following statements with regard to GenomeIndia Project:
1. It is a part of the Human Genome Project.
2. The project is funded by the Department of Biotechnology (DBT), Government of India.
3. Its primary aim is to build a catalogue of genetic diversity of the Indian population.

Which of the statements given above is/are correct?

3 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to drone swarms is/are correct?
1. They use Terahertz band of frequency to communicate with the command centre.
2. Individual drones in the swarm can communicate with other drones in the swarm.
3. GPS Spoofing is a commonly used technique to counter drone swarm attack.

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4 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to involvement of private entities in India’s space programme:
1. The Indian National Space Promotion and Authorisation Centre (IN-SPACe) is an autonomous agency formed to facilitate participation of private entities.
2. Agnikul Cosmos launched the world’s first flight using 3D-printed rocket engine.
3. Skyroot Aerospace has developed liquid fuel for GSLV.

Which of the statements given above is/are correct?

5 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to Green Hydrogen is/are correct?
1. It is decarbonized hydrogen obtained from natural gas reforming combined with carbon capture and storage (CCS).
2. It is produced using electrolysis of water with electricity generated by renewable energy.
3. National Green Hydrogen Mission of India aims for abatement of nearly 50 MMT of annual greenhouse gas emissions by 2030.

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6 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to stealth technology is/are correct?
1. Stealth objects have a very small radar cross-section and are coated with Radar Absorbing Material.
2. Stealth objects can be detected using specific frequencies.
3. Stealth objects are coated with metamaterials to increase the scattering of electromagnetic radiation.

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7 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to Large Language Models (LLMs) used in machine learning is/are correct?
1. LLMs assign probabilities to the next possible words and then pick the one with the highest probability.
2. LLMs process data through mathematical optimization to minimise prediction errors.
3. LLMs produce unbiased outputs.

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8 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements with regard to genetic medicine is/are correct?
1. Genetic medicines correct/compensate for the faulty genes responsible for disease.
2. Engineered viruses and lipid nanoparticles are used as carriers of the genetic medicine.
3. Genetic medicines alter the entire DNA sequence.

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9 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements regarding the features of blockchain technology are correct?
1. Records stored in the database may be made visible to relevant stakeholders without risk of alteration.
2. Copies of the entire database are stored on multiple computers on a network, syncing within seconds.
3. Consortium blockchain is a blend of public and private blockchains allowing selective data access.
4. Mathematical algorithms make it impossible to change or delete any data once recorded and accepted.

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10 / 49

Category: General Science

[UPSC CSE 2026]
Which of the following statements about DHRUV64 is/are correct?
1. It is the third chip fabricated under the DIR-V Programme with an overall aim to enable the creation of microprocessors for India.
2. It is India’s first homegrown 1.0 GHz, 64-bit dual-core microprocessor.

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11 / 49

Category: General Science

[UPSC CSE 2025]
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?

12 / 49

Category: General Science

[UPSC CSE 2024]
Which one of the following is synthesised in the human body that dilates blood vessels and increases blood flow?

13 / 49

Category: General Science

[UPSC CSE 2022]
Consider the following statements in respect of probiotics:
1. Probiotics are made of both bacteria and yeast.
2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut.
3. Probiotics help in the digestion of milk sugars.

Which of the statements given above is/are correct?

14 / 49

Category: General Science

[UPSC CSE 2022]
Which one of the following statements best describes the role of B cells and T cells in the human body?

15 / 49

Category: General Science

[UPSC CSE 2022]
Certain species of which one of the following organisms are well known as cultivators of fungi?

16 / 49

Category: General Science

[UPSC CSE 2021]
Which of the following have species that can establish a symbiotic relationship with other organisms?
1. Cnidarians
2. Fungi
3. Protozoa

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17 / 49

Category: General Science

[UPSC CSE 2021]
Consider the following:
1. Bacteria
2. Fungi
3. Virus

Which of the above can be cultured in artificial/synthetic medium?

18 / 49

Category: General Science

[UPSC CSE 2021]
In nature, which of the following is/are most likely to be found surviving on a surface without soil?
1. Fern
2. Lichen
3. Moss
4. Mushroom

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19 / 49

Category: General Science

[UPSC CSE 2021]
In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid

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20 / 49

Category: General Science

[UPSC CSE 2021]
With reference to furnace oil, consider the following statements:
1. It is a product of oil refineries.
2. Some industries use it to generate power.
3. Its use causes sulphur emissions into the environment.

Which of the statements given above are correct?

21 / 49

Category: General Science

[UPSC CSE 2021]
Why is there a concern about copper smelting plants?
1. They may release lethal quantities of carbon monoxide into the environment.
2. The copper slag can cause the leaching of heavy metals into the environment.
3. They may release sulphur dioxide as a pollutant.

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22 / 49

Category: General Science

[UPSC CSE 2021]
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

23 / 49

Category: General Science

[UPSC CSE 2021]
Water can dissolve more substances than any other liquid because:

24 / 49

Category: General Science

[UPSC CSE 2021]
Which one of the following is a reason why astronomical distances are measured in light-years?

25 / 49

Category: General Science

[UPSC CSE 2020]
Which of the following statements are correct regarding the general difference between plant and animal cells?
1. Plant cells have cellulose cell walls while animal cells do not.
2. Plant cells do not have plasma membrane unlike animal cells which do.
3. Mature plant cells have one large vacuole whilst animal cells have many small vacuoles.

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26 / 49

Category: General Science

[UPSC CSE 2020]
Steel slag can be the material for which of the following?
1. Construction of base road
2. Improvement of agricultural soil
3. Production of cement

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27 / 49

Category: General Science

[UPSC CSE 2019]
The word Denisovan is sometimes mentioned in media in reference to:

28 / 49

Category: General Science

[UPSC CSE 2019]
Which one of the following statements is not correct regarding Hepatitis?

29 / 49

Category: General Science

[UPSC CSE 2018]
Which of the following are predictions of Albert Einstein’s General Theory of Relativity?
1. Light is affected by gravity.
2. The Universe is constantly expanding.
3. Matter warps its surrounding space-time.

Select the correct answer using the code given below:

30 / 49

Category: General Science

[UPSC CSE 2017]
Consider the following pairs of commonly consumed materials and controversial chemicals:
1. Lipstick — Lead
2. Soft Drinks — Brominated vegetable oils
3. Chinese fast food — Monosodium glutamate (MSG)

Which of the pairs given above is/are correctly matched?

31 / 49

Category: General Science

[UPSC CSE 2018]
What is the reason for Non-Metals to be a bad conductor of electricity?

32 / 49

Category: General Science

[UPSC CSE 2016]
Which of the following statements is/are correct?
Viruses can infect:
1. bacteria
2. fungi
3. plants

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33 / 49

Category: General Science

[UPSC CSE 2014]
Consider the following pairs of Vitamins and their Deficiency diseases:
1. Vitamin C — Scurvy
2. Vitamin D — Rickets
3. Vitamin E — Night blindness

Which of the pairs given above is/are correctly matched?

34 / 49

Category: General Science

[UPSC CSE 2014]
Which of the following is/are example(s) of chemical change?
1. Crystallization of sodium chloride
2. Melting of ice
3. Souring of milk

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35 / 49

Category: General Science

[UPSC CSE 2014]
Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of:

36 / 49

Category: General Science

[UPSC CSE 2014]
Which one of the following is the core energy transformation involved in photosynthesis?

37 / 49

Category: General Science

[UPSC CSE 2014]
Among the following organisms, which one does not belong to the class of the other three?

38 / 49

Category: General Science

[UPSC CSE 2014]
Which of the following statements is/are correct regarding vegetative propagation of plants?
1. Vegetative propagation produces clonal population.
2. Vegetative propagation helps in eliminating the virus.
3. Vegetative propagation can be practiced most of the year.

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39 / 49

Category: General Science

[UPSC CSE 2013]
Fruits stored in a cold chamber exhibit longer storage life because:

40 / 49

Category: General Science

[UPSC CSE 2013]
Many transplanted seedlings do not survive because:

41 / 49

Category: General Science

[UPSC CSE 2013]
Which of the following statements is/are correct regarding viruses?
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:

42 / 49

Category: General Science

[UPSC CSE 2013]
Ball bearings are used in bicycles, automobiles, etc., because:

43 / 49

Category: General Science

[UPSC CSE 2013]
With reference to the four fundamental forces of nature (gravity, electromagnetism, weak nuclear, strong nuclear), which one of the following statements is not correct?

44 / 49

Category: General Science

[UPSC CSE 2013]
A rainbow is produced when sunlight falls on droplets 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 below:

45 / 49

Category: General Science

[UPSC CSE 2013]
Consider the following phenomena:
1. Size of the sun at dusk.
2. Color 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?

46 / 49

Category: General Science

[UPSC CSE 2013]
Consider the following minerals:
1. Calcium
2. Iron
3. Sodium

Which of the minerals given above is/are required by the human body for the contraction of muscles?

47 / 49

Category: General Science

[UPSC CSE 2013]
Consider the following animals:
1. Sea cow
2. Seahorse
3. Sea lion

Which of the above is/are mammal(s)?

48 / 49

Category: General Science

[UPSC CSE 2013]
What is/are the importance of discovering the Higgs boson particle?
1. It will help us to understand why elementary particles have mass.
2. It will enable us to transfer matter without traversing physical space.
3. It will enable us to create better fuel for nuclear fission.

Select the correct answer using the codes given below:

49 / 49

Category: General Science

[UPSC CSE 2019]
With reference to recent developments in science, which one of the following statements is not correct?

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