Question # 1

When rain is accompanied by a thunderstorm, the collected rain water will have pH

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Slightly lower than that of rain water without thunderatorm

Slightly higher than that of rain water without thunderastorm

Uninfluenced by occurrence of thunderatorm

Which depends on amount of dust in air

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

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SO2

NO2

CO

O3

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

The expected specific waste fo petroleum industry is.

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Asphalt and tars

Paper

Cloth

Fibre

Which of the following is renewable resources of energy.

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Hydropower

Wind power

Solar power

All above

Which of the following is a non degradable pollutant.

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Long chain phenoiics

DDT

Mercuric salts

All above

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 gas does not exist free on earth.

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N2

H2

O2

CH4

Which of the following statement is not related with the effect of thermal pollution.

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Decrease in BOD

Increase in BOD

Reduction in DO

Change in algal production

Solar energy mainly light originates from sun due to.

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Addition relations

Displacement reactions

Thermonuclear reactions

Substitution reactions

In biological ecosystem which of the following substance is used by organisms.

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Water

Sunlight

Minerals

All 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 is biodegradable pollutant.

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Domestic waste

DDT

Mercury salta

Aluminum foil

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

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Calcium

Megnesium

Iron

All above

Ozone layer of stratosphere requires protection from indiscriminate use of.

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Weather ballons

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 reacts with hemoglobin of blood and produce toxic effect.

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Carbon dioxide

Carbon monoxide

Oxygen

Carbon suboxide

Ozone layer of upper atmosphere is being destroyed by

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chlorofluorocarbons

SO2

Photochemical oxidants O2 and CO2

Smog

The expected specific waste of food industry is.

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Meats

Nuts

Fats or Oils

All above

A man has to think of alternate sources of energy due to

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Shortage of vehicles

Shortage of fossil fuels

Construction of house

Running of power plant

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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