Question # 1

pH of acid rain is:

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7-5

6-7

1-2

4-5

The percentage of SO₂released by the combustion of coal and petroleum product.

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40%

60%

70%

80%

By the increase in the concentration of CO₂ in air.

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Decrease in heat energy

Increase in heat energy.

Heat energy remains same

None of them

The waste products driven out because of the combustion of fossil fuels.

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Primary pollutant

Secondary pollutant

Tertiary pollutant.

None of them

Ozone is an allotropic form of

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Carbon

Oxygen

Sulphur

Phosphorous

The region of ozone decomposition in stratosphere is.

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20 km

30 km

40 km

50 km

Acid rain affects the aquatic life by clogging fish gills because of:

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Lead metal

Chromium metal

Mercury metal

Aluminium metal

Which gas is not present in atmosphere?

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Nitrogen

Oxygen

Helium

Carbon dioxide

The process by which atmospheric nitrogen is turned into nitrates in the soil is called.

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Nitration

Fixing

Oxidation

Reduction

Which of the following can be used as a fuel?

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Methanol

Ethanol

Bio-diesel

All of them

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

Ozone has a smell

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Bitter

Rotten egg

Sweat

None of them

High concentration of which metal clogs the fish gills.

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Zinc

Aluminium

Sodium

Copper

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