English UPSC CSE Prelims 2023
Q41. With reference to the role of biofilters in Recirculating Aquaculture System consider the following statements. 1. Biofilters provide waste treatment by removing uneaten fish feed. 2. Biofilters convert ammonia present in fish waste to nitrate. 3. Biofilters increase phosphorus as nutrient for fish in water. How many of the statements given above are correct?
A Only one B Only two C All three D None
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Correct answer: Only two
English UPSC CSE Prelims 2022
Q42. 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
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Correct answer: Rice
English UPSC CSE Prelims 2022
Q43. “System of Rice Intensification” of Cultivation, in which alternate wetting and drying of rice fields is practiced, 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
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Correct answer: 1, 2 and 3
English UPSC CSE Prelims 2022
Q44. Which of the following are nitrogen-fixing plants? 1. Alfalfa 2. Amaranth 3. Chickpea 4. Clover 5. Purslane (Kulfa) 6. Spinach Select the correct answer using the code given below:
A 1, 3 and 4 only B 1, 3, 5 and 6 only C 2, 4, 5 and 6 only D 1, 2, 4, 5 and 6
Show answer
Correct answer: 1, 3 and 4 only
English UPSC CSE Prelims 2022
Q45. Consider the following States: 1. Andhra Pradesh 2. Kerala 3. Himachal Pradesh 4. Tripura How many of the above are generally known as tea-producing States?
A Only one State B Only two States C Only three States D All four States
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Correct answer: All four States
English UPSC CSE Prelims 2022
Q46. With reference to the “Tea Board” in India, consider the following statements: 1. The Tea Board is a statutory body. 2. It is a regulatory body attached to the Ministry of Agriculture and Farmers Welfare. 3. The Tea Board’s Head Office is situated in Bengaluru. 4. The Board has an overseas office in Dubai and Moscow. Which of the statements given above are correct?
A 1 and 3 B 2 and 4 C 3 and 4 D 1 and 4
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Correct answer: 1 and 4
English UPSC CSE Prelims 2021
Q47. How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant. 2. Conventional chemical farming can cause increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming. 3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions. 4. Practice of mulching is very important in permaculture farming but not necessarily so in conventional chemical farming. Select the correct answer using the code given below.
A 1 and 3 B 1, 2 and 4 C 4 only D 2 and 3
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Correct answer: 1, 2 and 4
English UPSC CSE Prelims 2021
Q48. With reference to 'palm oil, consider the following statements: 1. The palm oil tree is native to Southeast Asia. 2. The palm oil is a raw material for some industries producing lipstick and perfumes. 3. The palm oil can be used to produce biodiesel. 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
Show answer
Correct answer: 2 and 3 only
English UPSC CSE Prelims 2021
Q49. Among the following, which one is the least water-efficient crop?
A Sugarcane B Sunflower C Pearl millet D Red gram
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Correct answer: Sugarcane
English UPSC CSE Prelims 2021
Q50. In the context of India's preparation for Climate-Smart Agriculture, consider the following statements: 1. The 'Climate-Smart Village approach in India is a part of a project led by the Climate Change, Agriculture and Food Security (CCAFS), an international research programme. 2. The project of CCAFS is carried out under Consultative Group on International Agricultural Research (CGIAR) headquartered in France. 3. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in India is one of the CGIAR's research centers. 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
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Correct answer: 1, 2 and 3
English UPSC CSE Prelims 2021
Q51. Consider the following statements: 1. Moringa (drumstick tree) is a leguminous evergreen tree. 2. Tamarind tree is endemic to South Asia. 3. In India, most of the tamarind is collected as minor forest produce. 4. India exports tamarind and seeds of moringa. 5. Seeds of moringa and tamarind can be used in the production of biofuels. Which of the statements given above are correct?
A 1, 2, 4 and 5 B 3, 4 and 5 C 1, 3 and 4 D 1, 2, 3 and 5
Show answer
Correct answer: 3, 4 and 5
English UPSC CSE Prelims 2021
Q52. The black cotton soil of India has been formed due to the weathering of
A Brown forest soil B Fissure volcanic rock C Granite and schist D Shale and limestone
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Correct answer: Fissure volcanic rock
English UPSC CSE Prelims 2021
Q53. Bollgard I and Bollgard II technologies are mentioned in the context of
A Clonal propagation of crop plants B Developing genetically modified crop plants C Production of plant growth substances D Production of biofertilizers
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Correct answer: Developing genetically modified crop plants
English UPSC CSE Prelims 2020
Q54. Consider the following activities. 1. Spraying pesticides on a crop field 2. Inspecting the craters of an active volcano 3. Collecting breath samples from spouting whales for DNA analysis At the present level of technology, which of the above activities can be successfully carried out using drones?
A 1 and 2 only B 2 and 3 only C 1 and 3 only D 1, 2 and 3
Show answer
Correct answer: 1, 2 and 3
English UPSC CSE Prelims 2020
Q55. In India, which of the following can be considered as public investment in agriculture? 1. Fixing Minimum Support Price for agricultural produce of all crops. 2. Computerization of Primary Agricultural Credit Societies. 3. Social Capital Development. 4. Free Electricity supply to farmers. 5. Waiver of agricultural loans by the banking system. 6. Setting up of cold storage facilities by the government. Select the correct answer using the code given below:
A 1, 2 and 5 only B 1, 3, 4 and 5 only C 2, 3 and 6 only D 1, 2, 3, 4, 5 and 6
Show answer
Correct answer: 2, 3 and 6 only
English UPSC CSE Prelims 2020
Q56. Which of the following factors/policies were affecting the price of rice in India in the recent past? 1. Minimum Support Price 2. Government's trading 3. Government's stockpiling 4. Consumer subsidies Select the correct answer using the code given below:
A 1, 2 and 4 only B 1, 3 and 4 only C 2 and 3 only D 1, 2, 3 and 4
Show answer
Correct answer: 1, 2, 3 and 4
English UPSC CSE Prelims 2020
Q57. Consider the following statements. 1. In the case of all cereals, pulses and oil seeds, the procurement at Minimum Support Prices (MSP) is unlimited in any State/UT of India. 2. In the case of cereals and pulses, the MSP is fixed in any State/UT at a level to which the market price will never rise. Which of the statements given above is/are correct?
A 1 only B 2 only C Both 1 and 2 D Neither 1 nor 2
Show answer
Correct answer: Neither 1 nor 2
English UPSC CSE Prelims 2020
Q58. What is the use of Biochar in farming? 1. Biochar can be used as a part of the growing medium in the vertical farming 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen fixing microorganisms. 3. When biochar is a part of the growing medium, it enables the medium to retain water for a longer time. Which of the above given statements is/are correct?
A 1 and 2 only B 2 only C 1 and 3 only D 1, 2 and 3 only
Show answer
Correct answer: 1, 2 and 3 only
English UPSC CSE Prelims 2020
Q59. What is/are the advantage/advantages of zero tillage in agriculture? 1. Sowing of wheat is possible without burning the residue of the previous crop. 2. Without the need for a nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible. 3. Carbon sequestration in the soil is possible. Select the correct answer using the code given below:
A 1 and 2 only B 2 and 3 only C 3 only D 1, 2 and 3 only
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Correct answer: 1, 2 and 3 only
English UPSC CSE Prelims 2020
Q60. With reference to pulse production in India, consider the following statements. 1. Black gram can be cultivated as both Kharif and rabi crops. 2. Green-gram alone accounts for nearly half of pulse production. 3. In the last three decades, while the production of kharif pulses has increased, the production of rabi pulses has decreased. Which of the statements given above is/are correct?
A 1 only B 2 and 3 only C 2 only D 1, 2 and 3 only
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Correct answer: 1 only