Environment 2021 MCQs

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

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The 'Common Carbon Metric', supported by UNEP, has been developed for

• A assessing the carbon footprint of building operations around the world
• B enabling commercial farming entities around the world to enter carbon emission trading
• C enabling governments to assess the overall carbon footprint caused by their countries
• D assessing the overall carbon foot­print caused by the use of fossil fuels by the world in a unit time

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Which of the following are detritivores?

1. Earthworms
2. Jellyfish
3. Millipedes
4. Seahorses
5. Woodlice

Select the correct answer using the code given below.

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

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In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?

• A Carbon cycle
• B Nitrogen cycle
• C Phosphorus cycle
• D Sulphur cycle

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Which one of the following is a filter feeder?

• A Catfish
• B Octopus
• C Oyster
• D Pelican

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Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following?

1. Brakes of motor vehicles
2. Engines of motor vehicles
3. Microwave stoves within homes
4. Power plants
5. Telephone lines

Select the correct answer using the code given below.

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

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With reference to the "New York Declaration on Forests', which of the following statements are correct?

1. It was first endorsed at the United Nations Climate Summit in 2014.
2. It endorses a global timeline to end the loss of forests.
3. It is a legally binding international declaration.
4. It is endorsed by governments, big companies and indigenous communities.
5. India was one of the signatories at its inception.

Select the correct answer using the code given below.

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

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Consider the following animals:

1. Hedgehog
2. Marmot
3. Pangolin

To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/ protect its/their vulnerable parts?

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

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Consider the following kinds of organisms:

1. Copepods
2. Cyanobacteria
3. Diatoms
4. Foraminifera

Which of the above are primary producers in the food chains of oceans?

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

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Which one of the following is used in preparing a natural mosquito repellent?

• A Congress grass
• B Elephant grass
• C Lemongrass
• D Nut grass

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In the nature, which of the following is/are most likely to be found surviving on a surface without soil?

1. Fern
2. Lichen
3. Moss
4. Mushroom

Select the correct answer using the code given below.

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

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What is blue carbon?

• A Carbon captured by oceans and coastal ecosystems
• B Carbon sequestered in forest biomass and agricultural soils
• C Carbon contained in petroleum and natural gas
• D Carbon present in atmosphere

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With reference to furnace oil, consider the following statements:

1. It is a product of oil refineries.
2. Some industries use it to generate power.
3. Its use causes sulphur emissions into environment.

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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Why is there a concern about copper smelting plants?

1. They may release lethal quantities of carbon monoxide into environment.
2. The copper slag can cause the leaching of some heavy metals into environment.
3. They may release sulphur dioxide as a pollutant.

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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‘R2 Code of Practices' constitutes a tool available for promoting the adoption of

• A environmentally responsible prac­tices in electronics recycling industry
• B ecological management of Wetlands of International Importance' under the Ramsar Convention
• C sustainable practices in the cultivation of agricultural crops in degraded lands
• D 'Environmental Impact Assessment' in the exploitation of natural resources

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