Question # 1

The words smog is a combination of smoke and:

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fog

foke

fork

fizzy

Which of the following is not a heavy industry?

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Iron

Fertilize

Paper

None

The temperature in the incineration process has a range:

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900 to 1000°C

650 to 1100°C

950 to 1300°C

500 to 900°C

Which one of the following does not act as pollutant

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Carbon monoxide

Sulphur dioxide

Hydrocarbons

Carbon dioxide

Fungicides are the pesticides which:

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Control the growth of fungus

Kills insects

Kills plants

Kill herb

Addition of washing soda removes

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Softness of water

Temporary hardness of water

Permanent hardness of water

Hydrogen from water

Which factor is helping to reduce the environmental pollution

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Urbanization

Industrialization

Increase of plantation

Rapid growth of population

The smog having high contents of SO₂is

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Neutral smog

Reducing smog

Oxidizing smog

Artificial smog

Region of earth capable of supporting life is called:

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Atmosphere

Hydrosphere

Lithosphere

All of these

Which one of the following is an organic compound?

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Calcium carbide

Calcium cyanide

Carbon disulphide

None of these

Which is the following is true about galvanic cell:

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Reduction occurs at cathode

Reduction occurs at anode

Anode is negatively charged

Chathode is positively charged

Residence time of methane in the atmosphere is

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3 - 7 days

2 -3 days

3 - 7 years

2 - 3 years

The normal amount of overhead ozone is about in DU:

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150

250

350

450

Newspaper can be recycled again and again by how many times?

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2

3

4

5

Incineration is a process in which solid waste is burned at high temperature ranging from

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500 to 600°C

900 to 1000°C

1000 to 1100°C

600 to 700°C

Unit of ozone is?

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Debye

Dobson

Esu

Coulumb

The largest item which is recycled is

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newspaper

plastic

aluminium

oil

Which of the following is a macronutrient?

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Boron

Iron

Copper

Carbon

Sulphate aerosols cause severe respiratory problems particularly among

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Infants

Women

Young people

Old people

In the atmosphere, O₂is about

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10%

15%

21%

25%

HOCl is a compound:

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Polor inorganic

organic

Ionic

covalant

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