Question # 1

Eutrophication is process which involves

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Depletion of ozone layer

Increase in the concentration of ozone in water

Decrease in the concentration of dissolved oxygen in water by algae

Decrease in the level of SO2 in air

DDT is

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Biodegradable pollutant

Nodegradable contaminant

Air pollutant

An antibiotic

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 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

The alternate feasible fuel for existence of mankind to

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Uranium

Wood

Bontonite

Cloth residues

Particulate from soil and mineral primarily contains

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Sodium compounds

Calcium compounds

Silicon compounds

Calcium, aluminum and silicon compounds

The main active contaminants of uranium processing are.

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U - 235

U-238

Pu -234

All above

Which of the following is major sink for carbo monoxide.

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Water

Soil

Animal respiration

Salts dissolved in ocean water

Environmental pollution effects.

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Biotic component

Plants only

Humans only

Both biotic and abiotic components of environment

Human hearing is sensitive to frequency in the range of about

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10,000 - 20,000 Hz

10 - 10,000 Hz

16- 20,000 Hz

None of the above

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

Which of the following health effect is caused by cadmium.

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Hypertension

Cardiovascular problem

Kidney damage

All above

Which of the following material is a constituent of crop residue.

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Cull

Fruit

vines

Bagasse

All above

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

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SO2

NO2

CO

All above

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

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Nuclear

Electric

Solar

All above

Photochemical among is related to pollution of

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Air

Water

Soil

All of the above

Which of the following statement is not relevant with nitrous oxide.

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It is a colorless and odourless gas

It is non toxic gas

It is present in the atmosphere in higher concentration

It has high reactivity in the lower atmosphere

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

The splitting of H2O can be carried out through

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Photolysis

Electrolysis

Dialysis

Hydrogenation

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

A high frequency sound has frequency

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100 Hz

200 HZ

300 Hz

500 Hz

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