Question # 1

Which of the following pollutant is not primary pollutant.

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Ash

Smoke

SO3

SO2

Which of the following is component of the ecosystem.

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Inorganic substances

ORGANIC Substances

Animal and plants only

All above

Which of the following process is not physical in nature.

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Mixing

Flocculation

Sedimentation

Activated sludge process

Maximum desirable concentration of fluorides according to international standard is.

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10-100 ppm

1 ppm

100-200 ppm

10-20 ppm

Which of the following play significant role in depletion of ozone layer.

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Oxides of nitrogen

Oxides of carbon

Oxides of sulphur

None of above

Which of the following statement is not correct with respect to hydrolytic cycle.

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Water covers about 83% of the earth's surface

Water covers about 73% of the ear5th's surface.

It is the major constituent of the lithosphere

it is essential requirement of all the organisms

Commercial incinerators produce.

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Smoke

CO

NOx

All above

Which of the following substance is not present in acid rain.

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Sulphuric acid

Nitric acid

Acetic acid

Sulphurous acid

Temporary hard water is softened on industrial scale by adding.

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Mg(OH)2

Ca(OH)2

KOH

NaOH

Which of the following is not chemical characteristics of water.

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pH

COD

BOD

Colour

Which of the following statement represent disadvantages of sanitary landfill

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Public opposition

Uneconomical

Health hazard

All above

Which among the following is secondary pollutant.

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CO

CO2

PAN

Aerosol

Which of the following statement is not related with environmental pollution.

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Direct or indirect change in any component of the biosphere

Undesirable change in the physical characteristics of the air

Undesirables change in the biological characteristics of the soil

not affecting adversely the industrial progress

Which of the following source of energy is abundant everlasting and non polluting.

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Nuclear

Electric

Solar

All above

Earth is protected from U.V. radiations by

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Carbon dioxide layer

Oxygen layer

Ozone layer

Troposphere

The action of all the relations of all the organism to their environment is called

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Biology

Botany

Ecology

Archiology

Chlorofluorocarbon are widely used as coolants in.

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Air conditioners

Clearing solvents

Aerosol propellant's

All above

Which of the following pollutant result from combustion of fossil fuels.

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SO2

NOx

CO

All above

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

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Dust

Smoke

Metal fumes

All above

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

Which of the following process is involved in getting back nitrogen into atomosphere.

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Nitrification

Denitricication

Ammonification

All above

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