Question # 1

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 chemical strong oxidizing agent is used in COD test.

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KMnO4

H2SO4

CH3COOH

K2Cr2O7

Which of the following compounds has fishing ordure

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ammonia

Organic sulphides

Amines

H2S

Ozone hole refers to.

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Black hole

Decrease to thickness of ozone layer in stratosphere

Decrease of thickness of ozone in troposphere

Increase concentration of ozone in the atmosphere

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

Earth is protected from U.V. radiations by

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Carbon dioxide layer

Oxygen layer

Ozone layer

Troposphere

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

Pesticide residues appear in which of the following foods.

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Milk

Fruit

Fish

Vegetables

All above

The unit of sound pressure level is

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Pascal

Decibel

Newton

Ampere

Which of the following statement is not correct with respect to harmful effects of ground water pollution.

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It causes lungs cancer

It causes jaundice

It damages crops

It helps to prevent epidermises

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 is a source of energy but does not cause pollution.

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Gaslone

Nuclear power plant

Fossil fuels

Sun

Water pollution is due to

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Agricultural discharges

Swages and other wastes

Industrial effects

All the above

Which of the following is domain of industrial ecology.

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The materials extractor

The materials processor

The consumer

All of above

Which of the following statement is related with CO.

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It is a colorless and tasteless gas

It has less affinity to words hemoglobin

It has a boiling point of -192 ^oC

It is a dangerous asphyxiant

Which of the following health effect is caused by lead.

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Cancer

Neurotoxin

Hypertension

Kidney damage

Which of the following statement is no true with respect to nitrogen dioxide.

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It is produced by the oxidation of NO

Its small concentration has been detected to lower stratosphere

It is major pollutant

It does not absorb sunlight.

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

Which of the following process is not physical in nature.

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Mixing

Flocculation

Sedimentation

Activated sludge process

Which of the following substance has been advocated as fuel of future.

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O2

N2

H2

H2O

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

automobiles

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