UPSC Prelims Science And Technology – 2022

1) Consider the following:

1. Aarogya Setu
2. CoWIN
3. Digi Locker
4. DIKSHA

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

1. 1 and 2 only
2. 2, 3 and 4 only
3. 1, 3 and 4 only
4. 1, 2, 3 and 4

Correct Answer: (D) 1, 2, 3 and 4

2) With References 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 a corporation.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Correct Answer: (D) 1, 2, and 3

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

1. SaaS buyers can customize 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?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Correct Answer: (D) 1, 2, and 3

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

1. A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
2. A spacecraft lands on another planet, after making several orbital motions.
3. A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
4. A spacecraft moves along a comet with the same speed and places a probe on its surface.

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

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

1. Cloud Services
2. Quantum Computing
3. Visible Light Communication Technologies
4. Wireless Communication Technologies

Correct Answer: (B) Quantum Computing

6) 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?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Correct Answer: (D) 1, 2 and 3

7) Consider the following statements:

1. Biofilms can form on medical implants within human tissues.
2. Biofilms can form on food and food processing surfaces.
3. Biofilms can exhibit antibiotic resistance.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Correct Answer: (D) 1, 2 and 3

8) Consider the following statements:

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?

1. 1 only
2. 2 only
3. 1 and 3
4. 2 and 3

Correct Answer: (C) 1 and 3

9) In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements:

1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform.
2. Sputnik V vaccine is manufactured using vector based platform.
3. COVAXIN is an inactivated pathogen based vaccine.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1,2 and 3

Correct Answer: ( B) 2 and 3 only

10) If a major solar storm (solar-flare) reaches the Earth, which of the following are the possible effects on the Earth?

1. GPS and navigation systems could fail.
2. Tsunamis could occur at equatorial regions.
3. Power grids could be damaged.
4. Intense auroras could occur over much of the Earth.
5. Forest fires could take place over much of the planet.
6. Orbits of the satellites could be disturbed.
7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted.

Select the correct answer using the code given below:

1. 1, 2, 4 and 5 only
2. 2, 3, 5, 6 and 7 only
3. 1, 3, 4, 6 and 7 only
4. 1, 2, 3,4, 5, 6 and 7

Correct Answer: (C) 1, 3, 4, 6 and 7 only

11) With reference to Non-Fungible Tokens (NFTs), consider the following statements:

1. They enable the digital representation of physical assets.
2. They are unique cryptographic tokens that exist on a blockchain.
3. They can be traded or exchanged at equivalency and therefore can be used as a medium of commercial transactions.

Which of the statements given above are correct?

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Correct Answer: (A) 1 and 2 only

12) Which one of the following statements best describes the role of B cells and T cells in the human body?

1. They protect the body from environmental allergens.
2. They alleviate the body’s pain and inflammation.
3. They act as immunosuppressants in the body.
4. They protect the body from the diseases caused by pathogens.

Correct Answer: (D) They protect the body from the diseases caused by pathogens.

13) Consider the following statements: DNA Barcoding can be a tool to:

1. assess the age of a plant or animal.
2. distinguish among species that look alike.
3. identify undesirable animal or plant materials in processed foods.

Which of the statements given above is/are correct?

1. 1 only
2. 3 only
3. 1 and 2
4. 2 and 3

Correct Answer: (D) 2 and 3