Question # 1

Pesticide residues appear in which of the following foods.

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Milk

Fruit

Fish

Vegetables

All 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

The key element to be considered when evaluating a health hazard is.

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The amount of material the employee is exposed.

The total time of exposure

The toxicity of the substance

All above

Which of the following is renewable energy source.

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Moon

Wind

Sun

Ocean

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

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O2

N2

H2

H2O

UV radiation from the sun causes a reaction in the atmosphere that leads to production

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Fluorides

Carbon monoxide

Sulphur dioxide

Ozone

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

Temporary hardness of water is due to.

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Bicarbonates of K

Bicarbonates of Na

Carbonates of Ca

Bicarbonates of Ca

Which of the following reacts with hemoglobin of blood and produce toxic effect.

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Carbon dioxide

Carbon monoxide

Oxygen

Carbon suboxide

The action of all the relations of all the organism to their environment is called

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Biology

Botany

Ecology

Archiology

Which of the following process is involved in nitrogen flotation

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Non symmetric fixation of nitrogen

Fixation by soil bacteria

Fixation by yeast

Fixation by blue green algae

All 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 is component of the ecosystem.

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Inorganic substances

ORGANIC Substances

Animal and plants only

All above

Which of the following health effect is caused by mercury.

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Nerve damage

Brain damage

Kidney damage

All above

Which of the following is not a chemical pollutant.

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Solid waste

Noiso

Insecticides

Liquid waste

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

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SO2

NO2

CO

All above

Which of the following substance is colloidal in nature.

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Clay

Al2O3

Fe2O3

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 is not chemical characteristics of water.

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pH

COD

BOD

Colour

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

Photochemical smog consist of excessive amount of X in addition to aldehydes ketones, PAN etc. X is.

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Methane

Carbon monoxide

Ozone

Carbondioxide

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