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PPSC Chemistry Part V Environmental Chemistry Online Test MCQs With Answers

Question # 1

Solar energy mainly light originates from sun due to.

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Addition relations

Displacement reactions

Thermonuclear reactions

Substitution reactions

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Question # 2

Disease caused by eating fish found in water contaminated with industrial waste having mercury is.

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Minamata disease

Bright's disease

Hashimoto's disease

Osteoaclerosis

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Question # 3

Which of the following oxide formed in appreciable quantity in the atmosphere.

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NO2

N2O

All above

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Question # 4

Which of the following pollutant result from roasting and heating processes.

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Dust

Smoke

Metal fumes

All above

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Question # 5

The main active contaminants of uranium processing are.

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U - 235

U-238

Pu -234

All above

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Question # 6

Which of the following disposal method is used or municipal wastes.

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Compaction

Composting

Recycling

Chemical processing

All above

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Question # 7

Carbon dioxide content in atmosphere is

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0.0034%

0.034 %

0.34 %

3.4 %

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Question # 8

The most promising technique for solar production of electricity is.

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Dry cell

Battery

Solar cell

None of above

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Question # 9

For an average exposure of 8 hours per day, the maximum permissible concentration limit of CO in the atmosphere is.

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50 ppm

500 ppm

10³ ppm

20 ppm

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Question # 10

Which of the following pollutants does not a leave a residue.

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Air pollutant

Chemical pollutant

Soil pollutant

Noise pollutant

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Question # 11

Biomass refers to all the organic material derived from

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Photolysis

Photosynthesis

Electrolysis

Oxidation

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