Science and Technology UPSC Prelims Questions: Science and Tech PYQ UPSC 2022-2013

Science and Technology UPSC Prelims Questions

If a candidate is sure to become an IAS/IPS/IFS officer, they must commence the preparation energetically. After analyzing the complete syllabus of the UPSC Exam and gathering the competent study materials, students must read the Science and Technology UPSC Prelims questions to attain an exceptionally high score in the first round under the Science and Tech section.

☛ UPSC Syllabus

UPSC Prelims 2022 Science and Technology Questions

Candidates who have decided to appear for the upcoming IAS exam should practice this year’s S&T questions. A glance at some of the Science and tech UPSC Prelims questions of the 2022 UPSC exam.

Question 1: Consider the following:

1. Aarogya Setu
2. COWIN
3. DigiLocker
4. DIKSHA

Which of the above are built on top of open-source digital platforms?

(a) 1, 2, 3 and 4

(b) 1, 3 and 4 only

(c) 2, 3 and 4 only

(d) 1 and 2 only

Answer: (a) 1, 2, 3 and 4

Question 2: With reference to Web 3.0, consider the following statements:

1. Web 3.0 technology enables people to control their own data.
2. In Web 3.0 world, there can be blockchain-based social networks.
3. Web 3.0 is operated by users collectively rather than by a corporation

Which of the following given above are correct?

(a) 1 and 3 only

(b) 1 and 2 only

(c) 1, 2 and 3

(d) 2 and 3 only

Answer: (c) 1, 2 and 3

Question 3: With reference to “Software as a Service (SaaS)”, consider the following statements:

1. SaaS buyers can customise the user interface and can change data fields.
2. SaaS users can access their data through their mobile devices.
3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS.

Which of the statements given above are correct?

(a) 1 and 3 only

(b) 1, 2 and 3

(c) 1 and 2 only

(d) 2 and 3 only

Answer: (b) 1, 2 and 3

Question 4: Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media?

(a) A spacecraft lands on another planet after making several orbital motions.

(b) A spacecraft moves along a comet with the same surface. speed and places a probe on its

(c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.

(d) A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.

Answer: (c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.

Question 5: Which one of the following is the context in which the term “qubit” is mentioned?

(a) Wireless Communication Technologies

(b) Visible Light Communication Technologies

(c) Quantum Computing

(d) Cloud Services

Answer: (c) Quantum Computing

☛ Download: UPSC Prelims 2022 Science and Technology Questions PDF

Science and Technology Questions in UPSC Prelims 2021

We have curated a few UPSC Prelims Science and Technology questions and their answers for students’ convenience. The Civil Services Prelims 2021 S&T Questions are as follows.

Question 1: Water can dissolve more substances than any other liquid because.

(a) It has high value of specific heat

(b) It is an oxide of hydrogen

(c) It is dipolar in nature.

(d) It is a good conductor of heat

Answer: (c) It is dipolar in nature.

Question 2: With reference to street lighting, how do sodium lamps differ from LED lamps?

1. Sodium lamps produce light at 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.

Select the correct answer using the code given below.

(a) 1, 2 and 3

(b) 1 and 3 only

(c) 2 only

(d) 3 only

Answer: (d) 3 only

Question 3: The term “ACE2” is talked about in the context of

(a) radio collars for wildlife tracking

(b) spread of viral diseases

(c) development of India’s own satellite navigation system

(d) genes introduced in the genetically modified plants

Answer: (b) Spread of viral diseases

Question 4: Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

(a) Polyvinyl Chloride

(b) Polyethylene terephthalate

(c) Polycarbonate

(d) Low-density polyethylene

Answer: (c) Polycarbonate

Question 5: “Triclosan” considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

(a) Toiletries

(b) Reused plastic containers

(c) Fruit ripening substances

(d) Food preservatives

Answer: (a) Toiletries

☛ Download: UPSC science questions 2021 PDF

Science and Technology UPSC Prelims Questions 2020

It is important to go through at least 3-5 previous year’s papers to understand the pattern of questions and answers provided. Some of the Science and Technology UPSC Prelims Questions of 2020 are mentioned below.

Question 1: Which of the following statements are correct regarding the general difference between plant and animal cells ?

(1) Plant cells have cellulose cell walls whilst animal cells do not.

(2) Plant cells do not have plasma membranes unlike animal cells which do.

(3) Mature plant cell has one large vacuole whilst an animal cell has many small vacuoles.

Select the correct answer using the code given below :

(a) 1, 2 and 3

(b) 1 and 3 only

(c) 2 and 3 only

(d) 1 and 2 only

Answer: (b) 1 and 3 only

Question 2: In the context of recent advances in human reproductive technology, ‘Pronuclear Transfer” is used for

(a) Prevention of mitochondrial diseases in offspring

(b) Development of stem cells into functional embryos

(c) Fertilization of egg in vitro by the donor sperm

(d) Genetic modification of sperm producing cells

Answer: (a)Prevention of mitochondrial diseases in offspring

Question 3: What is the importance of using Pneumococcal Conjugate Vaccines in India?

(1) These vaccines are effective against pneumonia as well as meningitis and sepsis.

(2) Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.

(3) These vaccines have no side effects and cause no allergic reactions.

Select the correct answer using the code given below :

(a) 1, 2 and 3

(b) 1 and 2 only

(c) 1 only

(d) 3 only

Answer: (b) 1 and 2 only

Question 4: With reference to the carbon nanotubes, consider the following statement :

(1) They can be used as the carriers of drugs and antigens in the human body.

(2) They can be made into artificial blood capillaries for an injured part of the human body.

(3) They can be used in biochemical sensors.

(4) Carbon nanotubes are biodegradable.

Which of the statements given above are correct ?

(a) 2, 3 and 4 only

(b) 1, 2, 3 and 4

(c) 1 and 2 only

(d) 1, 3 and 4 only

Answer: (d) 1, 3 and 4 only

Question 5: Consider the following statements :

(1) Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent.

(2) A person’s genome can be edited before birth at the early embryonic stage.

(3) Human induced pluripotent stem cells can be injected into the embryo of a pig.

Which of the statements given above is/are correct ?

(a) 2 only

(b) 1 only

(c) 1, 2 and 3

(d) 2 and 3 only

Answer: (c) 1, 2 and 3

☛ Download: Science and Technology UPSC Questions 2020 PDF

Topic Wise Science and Technology Questions

Candidates must conceptually understand Topic Wise Science and Technology Questions and keep revising them regularly to get a good score in this section of the exam. The topics covered in this segment are as follows.

• Human Genes
• Nanotechnology
• Human reproductive technology
• Plant and animal cells
• Diseases

☛ Download: Science and Technology UPSC Prelims Questions [2022-13] PDF

Science and Technology UPSC Prelims Questions Trend (2022-2013)

The number of questions on Science & Technology in GS Paper I differs slightly yearly. There were 13 questions from the subject in Prelims 2022 and 2021, 12 questions in Prelims 2020, 11 questions in Prelims 2019, and so on.

☛ Science and Technology Notes for UPSC

Check out the number of questions asked in Science and Technology in UPSC Prelims from 2022-2013.

Year	Science and Technology PYQ UPSC Prelims – Number of Questions
UPSC Science and Technology Prelims Questions 2022	13
Science and Technology Questions in UPSC Prelims 2021	13
Previous Year Science and Technology Questions UPSC 2020	12
UPSC Prelims Science and Technology Questions 2019	11
UPSC Science and Technology Prelims Questions 2018	13
Science and Technology PYQ UPSC Prelims 2017	9
Science and Tech Prelims Questions 2016	7
UPSC Science and Technology Prelims Questions 2015	10
Science and Technology Previous Year Questions UPSC Prelims 2014	6
UPSC Science And Technology Questions 2013	6

Science and Technology UPSC Prelims Questions – Preparation Tips

Aspiring candidates can follow the below tips and tricks while preparing for Science and Technology UPSC Prelims Questions.

• Be well versed with the Science and Technology Syllabus, so one knows where to focus.
• Clearing basic concepts is of utmost importance; therefore, students should learn topics from Class 11 and 12 NCERT textbooks.
• Reading Science Reporter magazine can be useful as it contains plenty of material to cover UPSC prelims and the Mains exam regarding Current Affairs.
• Candidates can study Science and Tech subjects from the weekly newspapers and magazines, like the Hindu paper.
• Science students can refine their knowledge by revising basic questions and notes from the Science and Technology Books for UPSC.
• Candidates should be familiar with the latest developments in the health and medical sectors as UPSC has been gradually focusing more on Biology.
• Aspirants must read about the ongoing research experimentations and latest breakthroughs since the exam has also asked questions from that section.

☛ How to Prepare Current Affairs for UPSC?