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June 19, 2024 04:05
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Science and Technology Questions in UPSC prelims 2024 will give an opportunity for aspirants to streamline their preparation. Check out more about Science and Technology Questions in UPSC prelims.
Science and technology questions in UPSC prelims are closely related to current affairs. They have a significant weightage in prelims exam, making it vital for aspirants aiming to score high marks in UPSC prelims.
| Download UPSC Prelims Question Paper 2024 | |
| UPSC Prelims GS Paper I | Download Link |
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| Answer Key 2024 | GS Paper (01) Answer Key 2024 CSAT Paper Answer Key 2024 |
| DetaIled Answer Key 2024 | GS Paper (01) Answer Key 2024 CSAT Paper Answer Key 2024 |
Science and technology questions in UPSC prelims have generally been asked from topics such as trending technologies, DNA/RNA, Space Science, Communication, genetic engineering, etc. The best source for science and technology questions in UPSC prelims is newspapers and science and technology books. Candidates need to have a basic understanding of science before beginning their preparation.
Let us have a look at the Science and Technology Questions in UPSC Prelims 2024, along with the trends of the themes from the Previous years questions. The Trend Analysis of the previous years Science and Technology Questions in UPSC Prelims is also given here.
Science and Technology Questions in UPSC Prelims 2024
| Science and Technology Questions in UPSC Prelims 2024 | ||
| Serial No | Question | Answer |
| 1. | 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”?
(a) Big data analytics (b) Cryptography (c) Metaverse (d) Virtual matrix |
TBU |
| 2. | With reference to radioisotope thermoelectric generators (RTGs), consider the following statements:
Which of the statements given above are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 |
TBU |
| 3. | 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. Which one of the following is correct in respect of the above statements? (a) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I (b) Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I (c) Statement-I is correct, but Statement-II is incorrect (d) Statement-I is incorrect, but Statement-II is correct |
TBU |
| 4. | Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?
(a) Nitric oxide (b) Nitrous oxide (c) Nitrogen dioxide (d) Nitrogen pentoxide |
TBU |
| 5. | Consider the following activities:
In how many of the above activities can the radars be used? (a) Only one (b) Only two (c) All three (d) None |
TBU |
| 6. | Consider the following aircraft:
How many of the above are considered fifth generation fighter aircraft? (a) Only one (b) Only two (c) All three (d) None |
TBU |
| 7. | In which of the following are hydrogels used?
Select the correct answer using the code given below: (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3 |
TBU |
| 8. | Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?
(a) Hydrogen peroxide (b) Hydronium (c) Oxygen (d) Water vapour |
TBU |
| 9. | Recently, the term “pumped-storage hydropower” is actually and appropriately discussed in the context of which one of the following?
(a) Irrigation of terraced crop fields (b) Lift irrigation of cereal crops (c) Long duration energy storage (d) Rainwater harvesting system |
TBU |
| 10. | “Membrane Bioreactors” are often discussed in the context of :
(a) Assisted reproductive technologies (b) Drug delivery nanotechnologies (c) Vaccine production technologies (d) Wastewater treatment technologies |
TBU |
Science and Technology Questions in UPSC Prelims 2024 can be anticipated a little by seeing the Science and Technology Questions of UPSC Prelims 2023 and other previous years. UPSC has been consistent when it comes to asking science and technology questions in UPSC prelims. In the 2023 prelims, 9 questions were asked about this topic. The questions are given below.
Q1: Consider the following actions:
How many of the above actions is the function of the accelerometer required?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (C)
Q2: Consider the following statements:
How many of the above statements are correct?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (c)
Q3: ‘Aerial metagenomics’ best refers to which one of the following situations?
(a) Collecting DNA samples from air in a habitat at one go
(b) Understanding the genetic makeup of avian species of a habitat
(c) Using air-bome devices to collect blood samples from moving animals
(d) Sending drones to inaccessible areas to collect plant and animal samples from land surfaces and water bodies
Answer: (a)
Q4: ‘Microsatellite DNA’ is used in the case of which one of the following?
(a) Studying the evolutionary relationships among various species of fauna
(b) Stimulating ‘stem cells’ to transform into diverse functional tissues
(c) Promoting clonal propagation of horticultural plants
(d) Assessing the efficacy of drugs by conducting series of drug trials in a population
Answer: (a)
Q5: ‘Wolbachia method’ is sometimes talked about with reference to which one of the following?
(a) Controlling the viral diseases spread by mosquitoes
(b) Converting crop residues into packing material
(c) Producing biodegradable plastics
(d) Producing biochar from thermo-chemical conversion of biomass
Answer: (a)
Q6: Consider the following pairs:
| Objects in space | Description |
| Cepheids | Giant clouds of dust and gas in space |
| Nebulae | Stars which brighten and dim periodically |
| Pulsars | Neutron stars that are formed when massive stars run out of fuel and collapse |
How many of the above pairs are correctly matched?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (d)
Q7: Consider the following statements:
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: (d)
Q8: With reference to the role of bio-filters in Recirculating Aquaculture System, consider the following statements:
How many of the statements given above are correct?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (b)
Q9: With reference to green hydrogen, consider the following statements:
How many of the above statements are correct?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer: (c)
The trend of Science and Technology Questions in UPSC Prelims 2024 can be understood by analysing the Science and Technology Questions in UPSC Prelims from previous years. Science and technology questions in UPSC prelims have a weightage of 10-15%. The trends from past few years show us that UPSC has been consistently focusing on current affairs while framing questions. The number of science and technology questions asked in the last few years is given below.
| Year | Number of Questions |
| 2023 | 9 |
| 2022 | 14 |
| 2021 | 12 |
| 2020 | 12 |
| 2019 | 11 |
| 2018 | 13 |
| 2017 | 6 |
Every candidate needs to understand the Science and Technology Questions in UPSC Prelims in the previous years to prepare the Science and Technology Questions in UPSC Prelims 2024. UPSC has adopted a dynamic approach while framing Science and technology questions in UPSC prelims. Below are some tips to excel in science and technology.
UPSC favours some important themes while asking science and technology questions in UPSC prelims. Given below are certain important themes for science and technology.
| Themes | Significance |
| Basics of Biology | 1-2 questions related to Cells, Tissues, DNA/RNA |
| Microorganisms | 1-2 questions related to bacteria, virus, fungi etc |
| Health and Diseases | 1-2 questions related to diseases |
| Communication Technology | 1-2 questions on communication technology |
| Information Technology | 1-2 questions related to recent developments |
| Space Technology | 1-2 questions from space missions |
| Defence Technology | 1-2 questions from defence |
| Nanotechnology | 1-2 questions related to applications |
| Space science | 1-2 questions from black holes, dark matter, pulsars, gravitational waves etc |
| Everyday Science | 1-2 questions from science around us |
| Patents | 0-1 questions |
Based on the important science and technology themes, here are some questions asked in the prelims examination.
Patent
Q. Consider the following statements:
Which of the statements given above is/are correct?
(a) 1 and 3 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
Everyday Science
Q. With reference to street – lighting, how do sodium lamps differ from LED lamps?
Select the correct answer using the code given below. (2021)
(a) 3 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
Nanotechnology
Q. Consider the following statements:
Which of the above statements is/are correct?
(a) 1 only
(b) 3 only
(c) 1 and 2 only
(d) 2 and 3
Information Technology
Q. With reference to “Software as a Service (SaaS)”, consider the following statements:
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Space Technology
Q. The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometers long, with lasers shining between the craft.” The experiment in question refers to
(a) Voyager – 2
(b) New Horizons
(c) LISA Pathfinder
(d) Evolved LISA
Communication Technology
Q. With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
Select the correct answer using the code given below:
(a) 1, 2 and 3 only
(b) 1, 2 and 4 only
(c) 1, 3 and 4 only
(d) 2, 3 and 4 only
Health and Disease
Q. In the context of hereditary diseases, consider the following statements:
Which of the statements given above is/are correct? (2021)
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Microorganism
Q. Consider the following statements in respect of Probiotics:
(a) 1 only
(b) 2 only
(c) 1 and 3
(d) 2 and 3
Biology (DNA/RNA)
Q. Consider the following statements :
DNA Bar-coding can be a tool to:
Which of the statements given above is/are correct?
(a) 1 only
(b) 3 only
(c) 1 and 2
(d) 2 and 3
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