Question # 1

Which is not an air pollutant?

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CO₂

CO

SO₂

NH₃

The recombination of O and O₂ in mid stratosphere is an

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Exothermic reaction

Endothermic reaction

Heat absorbing process

None of these

Carbon monoxide is harmful to use because it:

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Paralyses lungs

Damages lungs

Reduce oxygen carrying ability of hemoglobin

Make the blood coagulate

The pH of acid rain.

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2

3

4

5

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

Which pollutant is responsible for changing weather?

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Air pollutant

Water pollutant

Soil pollutant

All of them

Ozone has a smell

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Bitter

Rotten egg

Sweat

None of them

Which metal present in acid rain affect the aquatic life by clogging fish gills?

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Lead

Chromium

Aluminium

Mercury

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

Which one of these pollutants are not found in car exhaust fumes?

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CO₂

O₃

NO₂

SO₂

Ozone layer is not found is

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Upper stratosphere

Mid stratosphere

Lower stratosphere

All of them

ozone depletion (i.e O3--------------> O2 + O) occurs in:

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lower stratosphere

middle stratosphere

upper stratosphere

troposphere

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