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PPSC Chemistry Part V Environmental Chemistry Online Test MCQs With Answers

Question # 1

Burning of fossil fuels is the main sources of which of the following pollutant.

Choose an answer

Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

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Question # 2

Pesticide residues appear in which of the following foods.

Choose an answer

Milk

Fruit

Fish

Vegetables

All above

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Question # 3

Peeling of ozone umbrella is due to.

Choose an answer

CFCa

PAN

CO2

Coal burning

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Question # 4

Temporary hard water is softened on industrial scale by adding.

Choose an answer

Mg(OH)2

Ca(OH)2

KOH

NaOH

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Question # 5

Which of the following pollutant is not secondary pollutnat.

Choose an answer

SO3

NO2

SO2

Ozone

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Question # 6

Which of the following phenomenon are driven by solar energy.

Choose an answer

Winds

Water cycle

Production of biomass

All above

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Question # 7

Which of the following pollutant is not primary pollutant.

Choose an answer

Ash

Smoke

SO3

SO2

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Question # 8

Which of the following statement is not true with respect to hydrocarbons.

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They are gaseous and liquids

They can be saturated or unsaturated

They in air by themselves alone cause harmful effects

They form photochemical oxidants

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Question # 9

Which of the following is a non degradable pollutant.

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Long chain phenoiics

DDT

Mercuric salts

All above

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Question # 10

Which of the following is an important aspect of industrial ecology.

Choose an answer

Minimising air emissions

Minimising liquid waste

Recycling after use

All above

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Question # 11

The range of sound pressure for uncomfortable level is.

Choose an answer

80 - 90 dB

100 - 120 dB

130-140 dB

All above

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