Photochemical smog does not contain :

(1) Ozone

(2) NOx

(3) PAN

(4) Carbon monoxide

Subtopic:  Air Pollution |
 50%
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Identify the incorrectly matched pair with respect to contamination of water
1. Minamata disease: Mercury
2. Blue baby syndrome: excessive nitrates
3. Black foot disease: excessive arsenic
4. Dental caries: excessive fluoride

Subtopic:  Water Pollution: II | Water Pollution |
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Which award given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
1. Venu Menon Animal Allies Award
2. Amrita Devi Bishnoi Award
3. David Shepherd Wildlife Award
4. The Pledge Award

Subtopic:  Resource Utilisation & Maintenance |
 95%
From NCERT
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Slash and burn agriculture leads to nutrient depleted soils and deforestation if:-

1. crash crops are implanted rather than cereals

2. it is practiced in a sufficiently larger area

3. some useful trees are retained by the farmers

4. sufficient time is not allowed to the land to recover

Subtopic:  Resource Utilisation & Maintenance |
 78%
From NCERT
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The Montreal Protocol was signed in 1987 to:

1. prevent deforestation around the world
2. control the emission of ozone depleting substances
3. control the green house gases
4. prevent hazards from radioactive nuclear wastes

Subtopic:  Ozone Layer Depletion |
 89%
From NCERT
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CFC have a continuing effect on ozone layer as:-

1. the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone

2. the Cl atoms formed by them are used up in reactions causing degradation of ozone

3. they are being produced in increasing amounts all over the world

4. they are efficiently absorbed by the atmospheric water vapors

Subtopic:  Ozone Layer Depletion |
 73%
From NCERT
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The normal greenhouse effect is necessary for survival of life on Earth as it has raised the temperature of Earth’s surface by:-

1. -18° C

2. 15° C

3. 33° C

4. 50° C

Subtopic:  Green House Effect & Global Warming |
From NCERT
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The correct descending order of the relative contribution of various greenhouse gases to total global warming is:
1. carbon dioxide; methane; nitrous oxide; CFCs
2. carbon dioxide; CFs; methane; nitrous oxide
3. carbon dioxide; CFs; nitrous oxide; methane
4. carbon dioxide; methane; CFCs; nitrous oxide

Subtopic:  Green House Effect & Global Warming |
 76%
From NCERT
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The Three Mile island is famous as:
1. it hosted the Kyoto protocol
2. it was the site of a large oil spil
3. it was a site of nuclear accident
4. it hosted the Earth summit

Subtopic:  Agrochemical & Radioactive Waste |
 80%
From NCERT
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Burying the radioactive wastes is not acceptable to many people as:
1. there is a risk of groundwater contamination
2. it may explode
3. it will harm the buried dead bodies
4. it may get accumulated in vegetations

Subtopic:  Agrochemical & Radioactive Waste |
 68%
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