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Questions from the latest paper are scored against UPSC's provisional answer key (the final key comes out after the final result).
What's in this test
Topic
Questions
Easy
Medium
Hard
IT, computing & emerging technologies
8
4
4
0
Space technology
4
3
1
0
Biotechnology & genetics
4
1
3
0
Defence, nuclear & energy technology
3
1
2
0
Human body, health & diseases
3
2
1
0
Physics & chemistry in everyday life
2
1
0
1
Difficulty is the Vault's own rating of each question; subjects and topics follow the official syllabus.
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About this test
How is this test marked?
As in UPSC's GS Paper I: 2 marks for each correct answer and a third of that (0.66) deducted for each wrong one. A question you leave scores nothing. The maximum here is 48.
How long do I get?
30 minutes — the exam's pace (100 questions in 2 hours) for 24 questions. When the time runs out, your answers are submitted as they stand.
How are the sets made?
Every question UPSC has asked on Science & technology since 2016 is in one of the 5 sets of about 25, each mixing topics and years. Questions UPSC dropped from evaluation are left out. Take them in any order; the sets page shows which you've done.
Is it free?
Yes. Anyone can take the test and see their score straight away. A free sign-up shows the full report and every question with UPSC's answer and an explanation.
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.
Select the answer using the code given below:
Question 2 of 24 · Prelims 2025, Q42
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?
Question 3 of 24 · Prelims 2025, Q46
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?
Question 4 of 24 · Prelims 2025, Q49
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?
Question 5 of 24 · Prelims 2023, Q53
Consider the following statements:
1.Carbon fibres are used in the manufacture of components used in automobiles and aircrafts.
2.Carbon fibres once used cannot be recycled.
Which of the statements given above is/are correct?
Question 6 of 24 · Prelims 2023, Q54
Consider the following actions:
1.Detection of car crash/collision which results in the deployment of airbags almost instantaneously
2.Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive
3.Detection of the tilt of the smartphone which results in the rotation of display between portrait and landscape mode
In how many of the above actions is the function of accelerometer required?
Question 7 of 24 · Prelims 2023, Q56
Consider the following pairs:
Objects in space
Description
1.
Cepheids
Giant clouds of dust and gas in space
2.
Nebulae
Stars which brighten and dim periodically
3.
Pulsars
Neutron stars that are formed when massive stars run out of fuel and collapse
How many of the above pairs are correctly matched?
Question 8 of 24 · Prelims 2023, Q99
Consider the following heavy industries:
1.Fertilizer plants
2.Oil refineries
3.Steel plants
Green hydrogen is expected to play a significant role in decarbonizing how many of the above industries?
Question 9 of 24 · Prelims 2022, Q36
Consider the following communication technologies:
1.Closed-circuit Television
2.Radio Frequency Identification
3.Wireless Local Area Network
Which of the above are considered Short-Range devices/technologies?
Question 10 of 24 · Prelims 2022, Q38
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?
Question 11 of 24 · Prelims 2021, Q66
In the context of hereditary diseases, consider the following statements:
1.Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg.
2.A child inherits mitochondrial diseases entirely from mother and not from father.
Which of the statements given above is/are correct?
Question 12 of 24 · Prelims 2021, Q73
The term ‘ACE2’ is talked about in the context of
Question 13 of 24 · Prelims 2020, Q40
With reference to "Blockchain Technology", consider the following statements:
1.It is a public ledger that everyone can inspect, but which no single user controls.
2.The structure and design of blockchain is such that all the data in it are about cryptocurrency only.
3.Applications that depend on basic features of blockchain can be developed without anybody's permission.
Which of the statements given above is/are correct?
Question 14 of 24 · Prelims 2020, Q41
With reference to carbon nanotubes, consider the following statements:
1.They can be used as carriers of drugs and antigens in the human body.
2.They can be made into artificial blood capillaries for an injured part of human body.
3.They can be used in biochemical sensors.
4.Carbon nanotubes are biodegradable.
Which of the statements given above are correct?
Question 15 of 24 · Prelims 2019, Q88
Which of the following adopted a law on data protection and privacy for its citizens known as 'General Data Protection Regulation' in April 2016 and started implementation of it from 25th May, 2018?
Question 16 of 24 · Prelims 2019, Q96
'RNA interference (RNAi)' technology has gained popularity in the last few years. Why?
1.It is used in developing gene silencing therapies.
2.It can be used in developing therapies for the treatment of cancer.
3.It can be used to develop hormone replacement therapies.
4.It can be used to produce crop plants that are resistant to viral pathogens.
Select the correct answer using the code given below.
Question 17 of 24 · Prelims 2019, Q97
Recently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?
Question 18 of 24 · Prelims 2018, Q28
With reference to digital payments, consider the following statements:
1.BHIM app allows the user to transfer money to anyone with a UPI-enabled bank account.
2.While a chip-pin debit card has four factors of authentication, BHIM app has only two factors of authentication.
Which of the statements given above is/are correct?
Question 19 of 24 · Prelims 2017, Q31
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 of the statements given above is/are correct?
Question 20 of 24 · Prelims 2017, Q85
In India, it is legally mandatory for which of the following to report on cyber security incidents?
1.Service providers
2.Data centres
3.Body corporate
Select the correct answer using the code given below:
Question 21 of 24 · Prelims 2017, Q87
What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?
Question 22 of 24 · Prelims 2016, Q31
In the context of the developments in Bioinformatics, the term 'transcriptome', sometimes seen in the news, refers to
Question 23 of 24 · Prelims 2016, Q79
India is an important member of the 'International Thermonuclear Experimental Reactor'. If this experiment succeeds, what is the immediate advantage for India?
Question 24 of 24 · Prelims 2016, Q84
Regarding 'DigiLocker', sometimes seen in the news, which of the following statements is/are correct?
1.It is a digital locker system offered by the Government under Digital India Programme.
2.It allows you to access your e-documents irrespective of your physical location.
Select the correct answer using the code given below.
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