Question # 1

Which is not the affect of polluted air on environment

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Acid rain

Smog

Ozone

Global warming

Which of the following forms a toxic substance in blood by combing with hemoglobin?

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Carbon dioxide

Carbon monoxide

Oxygen

Methane

Which of the following waste material is not recycled for use again

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Paper

Plastic

Hides of animals

Glass

Sulphur dioxide affects

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Cell wall

Plasmodesmata

All membrane systems

Nucleus

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

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Combining with oxygen to form carbon dioxide

Destruction of hemoglobin

Preventing reaction between oxygen and hemoglobin

Forming stable compound with hemoglobin

Atmosphere of big/metropolitan cities is polluted most by

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Automobile exhausts

Pesticide residue

Household waste

Radio-active fall out

The % of CO₂is the atmosphere is

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3.0%

0.03%

0.3%

0.5%

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

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Blow air

Add Na₂CO₃

Use a specially made sorbent having flouring trapped in it

Use a sorbent having Al₂O₃trapped in it

UV radiations bring about

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Skin cancer

Mouth cancer

Lung cancer

Liver cancer

Carbon monoxide is harmful to human beings as it

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Is carcinogenic

Is antagonistic to CO₂

Has higher affinity for hemoglobin as compared to oxygen

Is destructive to O₃

Increased asthmatic attacks in certain seasons are related to

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Inhalation of seasonal pollen

Eating of seasonal vegetables

Low temperature

Wet and dry environment

Mottling of teeth is due to presence of an element in drinking water

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Mercury

Fluorine

Boron

Chlorine

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

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Live stock waste

Oil leaks and spills

Disposal of industrial effluents

Rain

Which factor is helping to reduce the environmental pollution

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Rapid growth of population

Urbanization

Industrialization

Increase of plantation

Ozone depletion in stratosphere shall result in

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Forest fires

Increased incidence of skin cancer

Global warming

None of the above

As it passes into food chain, the concentration of DDT

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Remains same

Decreases

Increases

Unpredictable

Which is not a method for solid waste management

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Landfill

Incinerating

Recycling

None of these

DDT is

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Biodegradable pollutant

Nondegradable pollutant

Not a pollutant

An antibiotic

Which one is not a pollutant normally?

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Hydrocarbons

Carbon dioxide

Carbon monoxide

Sulphur dioxide

Acid rains are produced by

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Excess NO₂and SO₂from burining fossil fuels

Excess production of NH₃by industry and coal gas

Excess release of carbon monoxide by incomplete combustion

Excess formation of CO₂by combustion and animal respiration

Ozone hole is maximum over

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Europe

Antarctica

Asia

Africa

Exposure to CO results in

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Headache

Fatigue

Unconsciousness

All of these

Swage water is purified by

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Microorganisms

Light

Fishes

Aquatic plants

Chloroflurocarbon releases a chemical harmful to ozone

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Fluorine

Chlorine

Nitrogen peroxide

Sulphure dioxdie

Which heavy metals do not have any safe limits

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As

Hg

Cr

All of these

Which step is unnecessary for purification of water for drinking purposes

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Aeration

Coagulation

Treatment with chlorine

Treatment with iodine

SO₂Makes ______ acid rains

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Carbonic acid

Sulfuric

Nitric acid

All of these

Fungicides are the pesticides which

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Control the growth of fungus

Kill insects

Kill plants

Kill herbs

The amount of oxygen in the lithosphere is about

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35.50%

40.60%

56.60%

50.50%

Which gas is not a constituent of atmosphere

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Xe

O₃

H₂

F₂

In the atmosphere, O₂is about

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10%

15%

21%

25%

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