Question # 1

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

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SO2

NO2

CO

O3

The agricultural field that produces maximum methane gas into atmosphere is

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Wheat field

Paddy field

Cotton field

Groundnut field

Which of the following pose threat to historical monument Taj.

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Floods in Yamuna river

Temperature mediated spoilage of marble

Air pollutants from Mathura refinery

Weathering of marble

Which of the following pollutants results from chemicals petroleum and paper industries.

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SO2

CO

Hydrocarbons

All above

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

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Minimising air emissions

Minimising liquid waste

Recycling after use

All above

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

Photochemical among is related to pollution of

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Air

Water

Soil

All of the above

Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking.

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cyclic hydrocarbon chain

Shorter hydrocarbon chain

Unbranched hydrocarbon chain

Benzenoid hydrocarbons

Which of the following biogeochemical cycle is not component of ecosystem.

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Carbon cycle

Potassium cycle

Oxygen cycle

Nitrogen cycle

Which of the following health effect is caused by mercury.

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Nerve damage

Brain damage

Kidney damage

All above

The range of sound pressure which is painful is as

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130-140 dB

100 - 120 dB

90 - 80 dB

All above

Chlorofluorocarbon are widely used as coolants in.

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Air conditioners

Clearing solvents

Aerosol propellant's

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

Which of the following statements is not related to the decomposition phenomenon occurring in nature.

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Decomposition is due to autotrophic organisms

Decomposition involves bacteria and fungi

During decomposition organisms carry out specific reactions

Many species of decomposer are present in the biosphere

Which of the following is not chemical characteristics of water.

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pH

COD

BOD

Colour

Which of the following to non -auditory effect of noise on human body.

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Changes in the Vascular tone

_{Increase in the blood pressure}

Wakening of the coloured vision

All above

Earth is protected from U.V. radiations by

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Carbon dioxide layer

Oxygen layer

Ozone layer

Troposphere

Which is not a pollutant from the exhaust of motor.

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Hydrocarbons

Carbon monoxide

NOx

Fly ash

Chief source of water and soil pollution in

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Mining of ores

Thermal power plant

Agro industry

All the above

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

automobiles

Which of the following is a mode of controlling pollution in big cities.

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Cleanliness and less use of insecticides

Proper disposal of organic wastes, sewage and industrial effluents

Broader roads and shifting of factories out of the residential areas

All of above

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