Amongst the following which gas is the least contributor to total global warming?
1.    Methane
2.    Carbon dioxide
3.    Chlorofluorocarbons
4.    Nitrous oxide

Subtopic:  Green House Effect & Global Warming |
 79%
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Three Mile Island and Chernobyl are located respectively in:
1.    USA and Russia
2.    Russia and Canada
3.    USA and Ukraine
4.    England and Uzbekistan
 
Subtopic:  Agrochemical & Radioactive Waste |
 64%
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Ahmed Khan of Bangalore is famous for his:
1. concept of organic farming
2. contribution for developing ways of disposing radioactive wastes
3. discovery of the process of incineration
4.  innovation that can be a remedy for plastic wastes
Subtopic:  Solid Waste Pollution |
 89%
From NCERT
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Consider the given statements:
I.    Eutrophication is the natural aging of a lake by nutrient enrichment of its water.
II.    Cultural Eutrophication is in effort by the Ministry of Culture to save lakes and ponds from eutrophication.
1.    Only I is correct
2.    Only II is correct
3.    Both I and II are correct
4.    Both I and II are incorrect
 
Subtopic:  Water Pollution |
 68%
From NCERT
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Identify the incorrect statement:
 
1. Mercury and DDT undergo biomagnifications in the terrestrial food chain.
2. Nitrates and phosphates can cause rapid enrichment of nutrients in a lake.
3. Recycling is the only solution for the treatment of E-waste.
4. Without greenhouse effect the average temperature at surface of earth would have been minus 180C
Subtopic:  Water Pollution |
 67%
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Arrange the following acts in their chronological sequence in which they were passed in India [earliest to latest]:
 
I: Air [Prevention and Control of Pollution] Act
II: Environment [Protection] Act
III: Water [Prevention and Control of Pollution] Act

1.    II, III, I
2.    III, I, II
3.    II, I, III
4.    I, II, III
Subtopic:  Introduction to Pollution & Types | Air Pollution | Water Pollution |
 70%
From NCERT
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COP 26 was held at:
1. Glasgow, Scotland
2. Paris, France
3. Bonn, Germany
4. Katowice, Poland
 
 50%
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CNG is better than diesel as a fuel for automobiles. This would be most strongly supported by which of the following statements?
1. CNG burns more efficiently.
2. CNG is cheaper.
3. It cannot be adulterated.
4. It cannot be siphoned off by thieves.
Subtopic:  Air Pollution |
 83%
From NCERT
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Identify the incorrect statement:
1. In human eye, cornea absorbs UV-B.
2. Good ozone is found in stratosphere.
3. Thickness of ozone is measured in Dobson Units.
4. Ozone hole is particularly marked over equatorial regions.
Subtopic:  Ozone Layer Depletion |
 84%
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What is the minimum percentage of impurities present that makes domestic sewage unfit for human use?  
1.    0.1
2.    1.0
3.    5.0
4.    10.0
Subtopic:  Water Pollution |
 86%
From NCERT
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