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Environment & EcologyEasyAsked in: NDA · NDA-I 2017, GAT

Which of the following are the major coral reef areas of India ? 1. Gulf of Kachchh 2. Gulf of Mannar 3. Lakshadweep 4. Andaman and Nicobar Islands Select the correct answer using the code given below :

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

Correct answer

D. 1, 2, 3 and 4

Explanation

The correct answer is D, 1, 2, 3 and 4. All four areas are recognised as the major coral reef areas of India.

India's coral reefs lie in four main regions. The Gulf of Kachchh in Gujarat has fringing reefs and the Marine National Park near Jamnagar, India's first. The Gulf of Mannar between Tamil Nadu and Sri Lanka has reefs around 21 small islands and is a biosphere reserve. Lakshadweep is made almost wholly of coral atolls. The Andaman and Nicobar Islands have the richest and most varied fringing reefs in the country. Corals need warm, clear, shallow and salty water, which is why they are absent near large river mouths.

A is wrong: it leaves out the Gulf of Mannar and the Andaman and Nicobar Islands. B is wrong: it leaves out the Gulf of Kachchh and Lakshadweep. C is wrong: it drops the Andaman and Nicobar Islands, the largest reef area of all.

Exam tip: India's four reef areas are Gulf of Kachchh, Gulf of Mannar, Lakshadweep, and Andaman and Nicobar; Lakshadweep is the atoll group.

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Q3.Environment & EcologyAsked in: CDS · CDS-II 2026, GKEasy

Which of the following can be considered associated with mitigation of environmental problems ?

  1. A.Biomagnification
  2. B.Accelerated eutrophication
  3. C.Release of Nuclear wastes
  4. D.Categorical disposal of different wastes
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Correct answer: D. Categorical disposal of different wastes

Sorting wastes into categories and disposing of each in the proper way reduces pollution, so it helps solve environmental problems rather than cause them.

Q4.Environment & EcologyAsked in: CDS · CDS-I 2020, GKEasy

Which one of the following is the nodal agency in India for the United Nations Environment Programme?

  1. A.The Ministry of Environment, Forest and Climate Change
  2. B.The Ministry of Science and Technology
  3. C.The Ministry of Earth Sciences
  4. D.The Ministry of Home Affairs
Show answer
Correct answer: A. The Ministry of Environment, Forest and Climate Change

This ministry plans, promotes and coordinates India's environmental policy, so it deals with UNEP on India's behalf. UNEP was set up in 1972 after the United Nations Conference on the Human Environment in Stockholm and has its headquarters in Nairobi, Kenya.

Q5.Environment & EcologyAsked in: NDA · NDA-II 2017, GATEasy

Which one of the following is a cause of acid rains?

  1. A.Ozone
  2. B.Ammonia
  3. C.Sulphur dioxide
  4. D.Carbon monoxide
Show answer
Correct answer: C. Sulphur dioxide

Sulphur dioxide dissolves in rainwater to form sulphuric acid, a main cause of acid rain. Burning coal and oil in power stations, smelters and vehicles releases sulphur dioxide and oxides of nitrogen into the air.