Environment & Ecology - 2020 PYQ

Question 30 of 19

In the context of India, which of the following is/are considered to be practice(s) of eco-friendly agriculture?

1. Crop diversification
2. Legume intensification
3. Tensiometer use
4. Vertical farming

Select the correct answer using the code given below:

A 1, 2 and 3 only B 3 only C 4 only D 1, 2, 3 and 4

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Question 31 of 19

Which of the following are the reasons/factors for exposure to benzene pollution?

1. Automobile exhaust
2. Tobacco smoke
3. Wood burning
4. Using varnished wooden furniture
5. Using products made of polyurethane

Select the correct answer using the code given below:

A 1, 2 and 3 only B 2 and 4 only C 1, 3 and 4 only D 1, 2, 3, 4 and 5

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Question 32 of 19

Which one of the following statements best describes the term ‘Social Cost of Carbon’?

A Long-term damage done by a tonne of CO2 emissions in a given year. B Requirement of fossil fuels for a country to provide goods and services to its citizens, based on the burning of those fuels. C Efforts put in by a climate refugee to adapt to live in a new place. D Contribution of an individual person to the carbon footprint on the planet Earth.

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Question 33 of 19

Which of the following Protected Areas are located in Cauvery basin?

1. Nagarhole National Park
2. Papikonda National Park
3. Sathyamangalam Tiger Reserve
4. Wayanad Wildlife Sanctuary

Select the correct answer using the code given below:

A 1 and 2 only B 3 and 4 only C 1, 3 and 4 only D 1, 2, 3 and 4

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Question 34 of 19

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.

Which of the statements given above is/are correct?

A 1 only B 2 and 3 only C 2 only D 1 and 3 only

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Question 35 of 19

Which one of the following protected areas is well-known for the conservation of a sub-species of the Indian swamp deer (Barasingha) that thrives well on hard ground and is exclusively graminivorous?

A Kanha National Park B Manas National Park C Mudumalai Wildlife Sanctuary D Tal Chhaper Wildlife Sanctuary

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Question 36 of 19

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.

Select the correct answer using the code given below:

A 1, 2 and 3 only B 1, 2 and 4 only C 1, 3 and 4 only D 2, 3 and 4 only

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Question 37 of 19

If a particular plant species is placed under Schedule VI of The Wildlife Protection Act, 1972, what is the implication?

A A licence is required to cultivate that plant. B Such a plant cannot be cultivated under any circumstances. C It is a Genetically Modified crop plant. D Such a plant is invasive and harmful to the ecosystem.

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Question 38 of 19

According to India’s National Policy on Biofuels, which of the following can be used as raw materials for the production of biofuels?

1. Cassava
2. Damaged wheat grains
3. Groundnut seeds
4. Horse gram
5. Rotten potatoes
6. Sugar beet

Select the correct answer using the code given below:

A 1, 2, 5 and 6 only B 1, 3, 4 and 6 only C 2, 3, 4 and 5 only D 1, 2, 3, 4, 5 and 6

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Question 39 of 19

What is/are the advantage/advantages of zero tillage in agriculture?

1. Sowing of wheat is possible without burning the residue of previous crop.
2. Without the need for 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

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Question 40 of 19

With reference to solar water pumps, consider the following statements:
1. Solar power can be used for running surface pumps and not for submersible pumps.
2. Solar power can be used for running centrifugal pumps and not the ones with piston.

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

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Question 41 of 19

With reference to Indian elephants, consider the following statements:

1. The leader of an elephant group is a female.
2. The maximum gestation period can be 22 months.
3. An elephant can normally go on calving till the age of 40 years only.
4. Among the States in India, the highest elephant population is in Kerala.

Which of the statements given above is/are correct?

A 1 and 2 only B 2 and 4 only C 3 only D 1, 3 and 4 only

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Question 42 of 19

Which of the following are the most likely places to find the musk deer in its natural habitat?

1. Askot Wildlife Sanctuary
2. Gangotri National Park
3. Kishanpur Wildlife Sanctuary
4. Manas National Park

Select the correct answer using the code given below:

A 1 and 2 only B 2 and 3 only C 3 and 4 only D 1 and 4 only

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Question 43 of 19

In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint?

1. Copper slag
2. Cold mix asphalt technology
3. Geotextiles
4. Hot mix asphalt technology
5. Portlant cement

Select the correct answer using the code given below:

A 1, 2 and 3 only B 2, 3 and 4 only C 4 and 5 only D 1 and 5 only

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Question 44 of 19

What is the use of biochar in farming?

1. Biochar can be used as a part of the growing medium in 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 growing medium to retain water for longer time.

Which of the statements given above is/are correct?

A 1 and 2 only B 2 only C 1 and 3 only D 1, 2 and 3

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Question 45 of 19

With reference to India’s biodiversity, Ceylon frogmouth, Coppersmith barbet, Gray-chinned minivet and White-throated redstart are

A Birds B Primates C Reptiles D Amphibians

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Question 46 of 19

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.

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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Question 47 of 19

Consider the following statements:

1. Coal ash contains arsenic, lead and mercury.
2. Coal-fired power plants release Sulphur dioxide and oxides of nitrogen into the environment.
3. High ash content is observed in Indian coal.

Which of the statements given above is/are correct?

A 1 only B 2 and 3 only C 3 only D 1, 2 and 3

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Question 48 of 19

Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat”?

A Corbett B Ranthambore C Nagarjunsagar-Srisailam D Sunderbans

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