Question # 1

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 is not a chemical pollutant.

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Solid waste

Noiso

Insecticides

Liquid waste

Photochemical among is related to pollution of

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Air

Water

Soil

All of the above

Temporary hard water is softened on industrial scale by adding.

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Mg(OH)2

Ca(OH)2

KOH

NaOH

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

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O2

N2

H2

H2O

Which of the following chemical strong oxidizing agent is used in COD test.

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KMnO4

H2SO4

CH3COOH

K2Cr2O7

A high frequency sound has frequency

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100 Hz

200 HZ

300 Hz

500 Hz

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

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SO2

CO

Hydrocarbons

All above

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

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

Peeling of ozone umbrella is due to.

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CFCa

PAN

CO2

Coal burning

The smog is essentially caused by the presence of.

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O3 and N2

O2 and N2

Oxides of sulphur and nitrogen

O2 and O3

Biomass refers to all the organic material derived from

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Photolysis

Photosynthesis

Electrolysis

Oxidation

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

Increased asthmatic attacks in certain seasons are related to.

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Inhalation of seasonal pollens

Eating of seasonal vegetables

Low temperature

Wet and dry environment

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

Which of the following is major sink for carbo monoxide.

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Water

Soil

Animal respiration

Salts dissolved in ocean water

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 is biodegradable pollutant.

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Domestic waste

DDT

Mercury salta

Aluminum foil

Which of the following is renewable resources of energy.

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Hydropower

Wind power

Solar power

All above

In plant noise control, which of the following method is used for reducing noise

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Plant planning

Control at the source

Control of radiated noise

All above

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