Q281.Consider the following statements. Chlorofluoro carbons, known as ozone-depleting substances, are used 1. In the production of plastic foams. 2. In the production of tubeless tyres. 3. In cleaning certain electronic components. 4. As pressurizing agents in aerosol cans. Which of the statements(s) given above is/are correct?
Correct answer: 1, 3 and 4
Q282.Which one of the following is an air pollutant gas and is released by burning fossil fuel?
Correct answer: Sulphur dioxide
Q283.Which of the following is related with Protection of Ecological Balance? 1. Forest Policy 2. Environment Protection Act 3. Industrial Policy 4. Educational Policy Select the correct answer using the code given below.
Correct answer: All of these
Q284.Which of the following substances is/are ozone depleting? 1. Chlorofluoro carbons 2. Halans 3. Carbon tetrachloride Select the correct answer from the codes given below. Code
Correct answer: 1, 2 and 3
Q285.Which one of the following is not related to air pollution?
Correct answer: Eutrophication
Q286.Given below are two statements. Assertion (A): Natural vegetation is the true index of climate. Reason (R): Water-loving plants are found in a moist climate. In the context of the above, which one of the following is correct? Code
Correct answer: Both (A) and (R) are true and (R) is the correct explanation of
Q287.Consider the following statements. Assertion (A): Ozone is essential for biotic life. Reason (R): The ozone layer protects the earth’s surface from high energy radiation. Select the correct answer from the code given below.
Correct answer: Both (A) and (R) are true and (R) is the correct explanation of
Q288.Fly ash is a pollutive combustion product of burning
Correct answer: Coal
Q289.Consider the following. 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which of the above add carbon dioxide to the carbon cycle on Earth?
Correct answer: 2, 3 and 4
Q290.The minimum land area recommended for forest cover to maintain proper ecological balance in India in
Correct answer: 33%
Q291.‘Green Muffler’ is related to
Correct answer: Noise pollution
Q292.Which of the following is not true about the ecosystem?
Correct answer: It is a closed system
Q293.To maintain ecological balance, the area under forest should be
Correct answer: 33%
Q294.Bhopal Gas Tragedy (leakage of methyl isocyanate ‘MIC’) accident happened on
Correct answer: 3 December, 1984
Q295.Which one of the following is the best description of the term ‘ecosystem’?
Correct answer: A community of organisms together with the environment in which they live
Q296.Which one of the following has an evergreen forest?
Correct answer: Western Ghat
Q297.The gas which leaked from Union Carbide factory, Bhopal was
Correct answer: Methyl isocyanate (MIC)
Q298.‘Ecology’ is the study of relationship between
Correct answer: Organism and environment
Q299.The national forest policy aims at maintaining how much of the total geographical area under forests?
Correct answer: One-third
Q300.Polythene bags cannot be destroyed because they are made of
Correct answer: Polymers
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01
General practice
Topic-wise questions and study coverage will appear here.