Green chemistry means such reactions which

1.  produce colour during reactions

2.  reduce the use and production of hazardous chemicals

3.  are related to the depletion of ozone layer

4.  study the reactions in plants

Subtopic:  Air Pollution - Greenhouse Effect |
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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Among the following, the one that is not a green house gas is:

1.  sulphur dioxide

2.  nitrous oxide

3.  methane

4.  ozone

Subtopic:  Air Pollution - Greenhouse Effect |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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Which one of the following statements is not true?

1.  Concentration of dissolved oxygen below 6 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 |
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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

1. N2O52. NO23. N2O4. NO

Subtopic:  Gaseous Pollutants - Oxides of C & N |
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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 |
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Which is not a renewable source

(1) sunlight

(2) Coal

(3) Water

(4) wind energy

Subtopic:  Introduction |
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Noosphere is synonyms of

(1) Environment

(2) Atmosphere

(3) Hydrosphere

(4) Stratosphere

Subtopic:  Introduction |
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When biosphere turns into human-dominated environment it is called

(1) Noosphere

(2) Troposphere

(3) Mesosphere

(4) Man sphere 

Subtopic:  Introduction |
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The living organisms on or around the earth constitute

(1) Biome

(2) Biosphere

(3) Community

(4) Biocoenosis

Subtopic:  Introduction |
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Biosphere refers to 

(1) Plants of the world

(2) Special plants

(3) Area occupied by living beings

(4) Plants of a particular area

Subtopic:  Introduction |
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