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Science & Technology 2022

Science and Technology 2022

1. Which one of the following statements best describes the role of B cells and T cells in the human body? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

2. Consider the following statements:

  1. Other than those made by humans, nanoparticles do not exist in nature.
  2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.
  3. Nanoparticles of some commercial products which enter the environment are unsafe for humans

Which of the statements given above is/are correct? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

3. 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

4. Consider the following:

  1. Carbon monoxide
  2. Nitrogen oxide
  3. Ozone
  4. Sulphur dioxide

Excess of which of the above in the environment is/are cause(s) of acid rain? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

5. With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements:

  1. Its fibres can be blended with wool and cotton fibres to reinforce their properties.
  2. Containers made of it can be used to store any alcoholic beverage.
  3. Bottles made of it can be recycled into other products.
  4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions.

Which of the statements given above are correct? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

6. Consider the following:

  1. AarogyaSetu
  2. CoWIN
  3. DigiLocker
  4. DIKSHA

Which of the above are built on top of open-source digital platforms? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

7. 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 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

8. 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

9. Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

10. Which one of the following is the context in which the term “qubit” is mentioned? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

11. 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

12. 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.

Biofilms can exhibit antibiotic resistance.

 
 
 
 

13. 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

14. 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? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

15. 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: [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

16. Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide? [UPSC Civil Services Exam – 2022 Prelims]

 
 
 
 

17. “System of Rice Intensification” of cultivation, in which alternate wetting and drying of rice fields is practised, results in:

  1. Reduced seed requirement
  2. Reduced methane production
  3. Reduced electricity consumption

Select the correct answer using the code given below: [UPSC Civil Services Exam – 2022 Prelims]