UPSC CSE Prelims Exam 05 June 2022 – Paper 1 (Answer Key)

21. Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?
(a) Cotton
(b) Rice
(c) Sugarcane
(d) Wheat

22. “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 :
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

23. Which one of the following lakes of West Africa has become dry and turned into a desert ?
(a) Lake Victoria
(b) Lake Faguibine
(c) Lake Oguta
(d) Lake Volta

24. Gandikota canyon of South India was created by which one of the following rivers ?
(a) Cauvery
(b) Manjira
(c) Pennar
(d) Tungabhadra

25. Consider the following pairs :
Peak – Mountains
1. Namcha Barwa – Garhwal Himalaya
2. Nanda Devi – Kumaon Himalaya
3. Nokrek – Sikkim Himalaya
Which of the pairs given above is/are correctly matched ?
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only

26. The term “Levant” often heard in the news roughly corresponds to which of the following regions ?
(a) Region along the eastern Mediterranean shores
(b) Region along North African shores stretching from Egypt to Morocco
(c) Region along Persian Gulf and Horn of Africa
(d) The entire coastal areas of Mediterranean Sea

27. Consider the following countries :
1. Azerbaijan
2. Kyrgyzstan
3. Tajikistan
4. Turkmenistan
5. Uzbekistan
Which of the above have borders with Afghanistan ?
(a) 1, 2 and 5 only
(b) 1, 2, 3 and 4 only
(c) 3, 4 and 5 only
(d) 1, 2, 3, 4 and 5

28. With reference to India, consider the following statements :
1. Monazite is a source of rare earths.

2. Monazite contains thorium.
3. Monazite occurs naturally in the entire Indian coastal sands in India.
4. In India, Government bodies only can process or export monazite.
Which of the statements given above are correct?
(a) 1, 2 and 3 only
(b) 1, 2 and 4 only
(c) 3 and 4 only
(d) 1, 2, 3 and 4

29. In the northern hemisphere, the longest day of the year normally occurs in the :
(a) First half of the month of June
(b) Second half of the month of June
(c) First half of the month of July
(d) Second half of the month of July

30. Consider the following pairs :
Wetland / Lake Location
1. Hokera Wetland – Punjab
2. Renuka Wetland – Himachal Pradesh
3. Rudrasagar Lake – Tripura
4. Sasthamkotta Lake- Tamil Nadu
How many pairs given above are correctly matched ?
(a) Only one pair
(b) Only two pairs
(c) Only three pairs
(d) All four pairs

31. 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 and 2 only
(b) 2, 3 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4

32. 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 a corporation.
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

33. 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 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

34. Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media ?
(a) A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
(b) A spacecraft lands on another planet after making several orbital motions
(c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
(d) A spacecraft moves along a comet with the same speed and places a probe on its surface.

35. Which one of the following is the context in which the term “qubit” is mentioned ?
(a) Cloud Services
(b) Quantum Computing
(c) Visible Light Communication Technologies
(d) Wireless Communication Technologies

36. 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 ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d). 1, 2 and 3

37. 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?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

38. 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?
(a) 1 only
(b) 2 only
(c) 1 and 3
(d) 2 and 3

39. 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?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

40. 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 :
(a) 1, 2, 4 and 5 only
(b) 2, 3, 5, 6 and 7 only

(c) 1,3, 4, 6 and 7 only
(d) 1, 2, 3, 4, 5, 6 and 7

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