IAS Prelims GS Paper 1 - 2020 Solutions, Answer Key & Explanations Part 3 (Q. 41 to 60) Part 3 of 5

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In this video we will discuss solutions to UPSC CSE Civil Service Examination IAS Prelims GS Paper 1 - 2020 Solutions Part 1 (Q. 41 to 60)

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UPSC Prelims 2020 Answer Keys Complete Analysis - GS Paper 1 UPSC/ IAS Preparation 2020
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51. What are the advantages of fertigation in agriculture?
1. Controlling the alkalinity of irrigation water is possible.
2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible.
3. Increased availability of nutrients to plants is possible.
4. Reduction in the leaching of chemical nutrients is possible.

52. Consider the following minerals:
1. Bentonite
2. Chromite
3. Kyanite
4. Sillimanite

53. With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct?
1. OMT is measured up to a depth of 26°C isotherm, which is 129 metres in the south-western Indian Ocean during January-March.
2. OMT collected during January-March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.

54. With reference to chemical fertilizers in India, consider the following statements:
1. At present, the retail price of chemical fertilizers is market-driven and not administered by the Government.
2. Ammonia, which is an input of urea is produced from natural gas.
3. Sulphur, which is a raw material for phosphoric acid fertilizer, is a by-product of oil refineries.
55. With reference to India’s Desert National Park which of the following statements are correct?
1. It is spread over two districts.
2. There is no human habitation inside the Park.
3. It is one of the natural habitats of Great Indian Bustard.
56. Siachen Glacier is situated to the
(a) East of Aksai Chin
(b) East of Leh
(c) North of Gilgit
(d) North of Nubra Valley

57. With reference to the history of India. Consider the following pairs:
Famous Place Present State
1. Bhilsa - Madhya Pradesh
2. Dwarasamudra - Maharashtra
3. Girinagar - Gujarat
4. Sthanesvara - Uttar Pradesh
58. Consider the following statements:
1. 36% of India’s districts are classified as “overexploited” or “critical” by the Central Ground Water Authority (CGWA).
2. CGWA was formed under the Environment (Protection) Act.
3. India has the largest area under groundwater irrigation in the world.

59. Consider the following statements:
1. Jet streams occur in the Northern Hemisphere only.
2. Only some cyclones develop an eye.
3. The temperature inside the eye of a cyclone is nearly 10°C lesser than that of the surroundings.

60. Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat”?
(a) Corbett
(b) Ranthambore
(c) Nagarjunasagar-Srisailam
(d) Sunderbans #examrace #upsc #ugcnet

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