Question # 1

Which of the following gas protects us form harmful effect of uv radiation.

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SO2

NO2

CO

O3

Chlorofluorocarbon are widely used as coolants in.

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Air conditioners

Clearing solvents

Aerosol propellant's

All above

The hardness of water i s due to the presence of dissolved soluble salts of.

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Calcium

Megnesium

Iron

All above

Which of the following substance is colloidal in nature.

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Clay

Al2O3

Fe2O3

All above

Ozone layer of upper atmosphere is being destroyed by

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chlorofluorocarbons

SO2

Photochemical oxidants O2 and CO2

Smog

Pesticide residues appear in which of the following foods.

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Milk

Fruit

Fish

Vegetables

All above

Which of the following statement is not related with direct use of solar energy.

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It is used for space heating of buildings

It can be used to produce electrical power using photovoltaic cells

It can be used to produce hydrogen gas

It can be used start motor vehicle

Which of the following substance is generally not considered an air polutant.

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CO

CO2

SO2

NO2

Which of the following gas does not exist free on earth.

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N2

H2

O2

CH4

The expected specific waste of paper and allied products industry is.

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Chemicals

Paper and fibre residues

Links

All above

Classical smog occurs in place of.

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Excess concentration of SO2

Low temperature

High temperature

Excess concentration of ammonia

Which of the following techniques are used for minimizing water pollution.

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Stabilization of ecosystem

Recharge of the waste

Waste treatment

All above

The alternate feasible fuel for existence of mankind to

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Uranium

Wood

Bontonite

Cloth residues

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

automobiles

Which of the following process is used for the removal of gases.

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Precipitation

Chemical reaction in the atmosphere

Absorption

All above

The main active contaminants of nuclear reactors are.

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Co- 60

Mn -54

Sr-60

All above

Which of the following substance acts as gaseous pollutant.

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NO

NO2

CO

SO2

All above

Ground water is threatened with pollution from which of the following source.

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Domestic wastes

Industrial wastes

Agricultural wastes

All above

Long diseases are about four times more in urban areas as compared to rural areas. This is due to the presence of which of the following. in atmosphere.

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CO2

NO2

O2

N2

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

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

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