Question # 1

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

Which of the following pollutant is generated from combustion of fuel.

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Smoke

SO2

CO2

Metallic oxides

All above

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

automobiles

Temporary hard water is softened on industrial scale by adding.

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Mg(OH)2

Ca(OH)2

KOH

NaOH

Classical smog occurs in place of.

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Excess concentration of SO2

Low temperature

High temperature

Excess concentration of ammonia

Earth is protected from U.V. radiations by

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Carbon dioxide layer

Oxygen layer

Ozone layer

Troposphere

Which of the following statement is not correct with respect to radioactive pollutnats.

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Carcinoma and breast cancer

Leukemia

Increases biological immune system

Somatic and generic disorder

SO2 is generated from which of the following industry.

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Drying and packing

Paper

Pulp

paper and pulp

Which of the following disposal method is used for agriculture wastes.

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Dump

Landfill

Incineration

Open burning

All above

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

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Compaction

Composting

Recycling

Chemical processing

All above

Which of the following substance is released into environment in the nuclear power plants.

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Iodine -131

Argon - 41

Sr-90

Cs- 137

All above

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

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Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

DDT is

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Biodegradable pollutant

Nodegradable contaminant

Air pollutant

An antibiotic

Temporary hardness of water is due to.

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Bicarbonates of K

Bicarbonates of Na

Carbonates of Ca

Bicarbonates of Ca

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

Major principle underlying the sustainability of natural ecosystems is that they run on.

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Electric energy

Solar energy

Wind energy

None of the above

Water that easily forms a lather of films and frotha when agitated with a soap solution called.

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Hard water

Heavy water

Soft water

Washing water

Which of the following health effect is caused by lead.

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Cancer

Neurotoxin

Hypertension

Kidney damage

Carbon dioxide content in atmosphere is

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0.0034%

0.034 %

0.34 %

3.4 %

The expected specific waste fo petroleum industry is.

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Asphalt and tars

Paper

Cloth

Fibre

Which of the following is not a chemical pollutant.

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Solid waste

Noiso

Insecticides

Liquid waste

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