Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

1. N2O5
2. NO2
3. N2O
4. NO

Subtopic:  Air Pollution - Smog |
 65%
From NCERT
NEET - 2018
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Which one of the following statements is not true?

1.  Concentration of dissolved oxygen below 5 ppm is good for the growth of fish.
2.  Clean water would have a BOD value of less than 5 ppm.
3.  Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant.
4. pH of drinking water should be between 6.5-8.5.

Subtopic:  Water Pollution - Biological Oxygen Demand |
 67%
From NCERT
AIPMT - 2011
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Which important greenhouse gas, other than carbon dioxide, is being produced from the agricultural fields?

1. Arsine

2. Sulphur dioxide

3. Ammonia

4. Nitrous oxide

Subtopic:  Air Pollution - Greenhouse Effect |
 55%
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Carbon monoxide is a pollutant because it:

1. reacts with oxygen

2. inhibits glycolysis

3. reacts with haemoglobin

4. makes nervous system inactive

 73%
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Among the following, the one that is not a greenhouse gas is:

1. Sulphur dioxide

2. Nitrous oxide

3. Methane

4. Ozone

Subtopic:  Air Pollution - Greenhouse Effect |
 57%
From NCERT
NEET - 2019
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The phenomenon in which atmospheric gases trap the heat radiations from the sun near the earth’s surface and keeps it warm is known as-

1. Natural greenhouse effect

2. Tyndall effect

3. Heating effect

4. Joule’s effect

Subtopic:  Air Pollution - Greenhouse Effect |
 91%
From NCERT
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The gas that damages the ozone layer is -

1. CFCs 

2. CO2

3. CH

4. SO2

Subtopic:  Air Pollution - Ozone |
 93%
From NCERT
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Biosphere is

(1) In which individual interact to each other

(2) By which life originated

(3) The name of a bird

(4) Organic compound by which life diminishes

Subtopic:  Introduction |
 81%
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Which is not a renewable source

1. Sunlight

2. Coal

3. Water

4. Wind energy

Subtopic:  Introduction |
 80%
From NCERT
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Noosphere is synonyms of

(1) Environment

(2) Atmosphere

(3) Hydrosphere

(4) Stratosphere

Subtopic:  Introduction |
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