Question # 1

Shahi Qilla may be destroyed by

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Flood in Ravi

Temperature mediated spoilage of marble

Air pollutants from Lahore chemical industries

All the above

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

Carbon monoxide is pollutant as it

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Inactivates nerves

Inhibits glycolysis

Combines with oxygen

Combines with hemoglobin

Photochemical smog is caused by

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CO

CO₂

O₃

NO₂

Chief source of water and soil pollution is

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Mining

Thermal power plant

Agro-industry

All the above

The largest item which is recycled is

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Newspaper

Plastic

Aluminium

Oil

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

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Carbon dioxide

Carbon monoxide

Oxygen

Methane

Domestic waste mostly constitutes

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Non-biodegradable pollution

Biodegradable pollution

Effluents

Air pollution

Chief air pollutant which is likely to deplete ozone layer

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Sulphure dioxide

Carbon dioxide

Nitrogen oxides and chloro fluorocarbons

Ozone hole is maximum over

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Europe

Antarctica

Asia

Africa

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

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10,000

20,000

100,000

50,000

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

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Pb

Cr

Hg

All of these

Ozone hole refers to

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Hole in ozone layers

Reduction in thickness of ozone layer in stratosphere

Reduction of thickness of ozone in troposphere

Increase concentration of ozone

SO₂Makes ______ acid rains

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Carbonic acid

Sulfuric

Nitric acid

All of these

Result of ozone hole is

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Green house effect

Global warming

Acid rain

UV rays reach the earth

Most hazardous metal pollutant of automobile exhaust is

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Mercury

Lead

Cadmium

Copper

Which of the following is not an air

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N₂

N₂O

NO

CO

The amount of Si in the lithosphere is about

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27.72%

30.35%

35.30%

40.21%

Minamata disease is due to pollution of

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Organic waste into drinking water

Oil spill in water

Industrial waste containing mercury into fishing water

Arsenic into the atmosphere

Which gasses are produced from landfills

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NH₃

H₂S

N₂

All of these

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

The film forming components of paints are

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Resins

Thinners

Pigments

Driers

Which one is the most toxic?

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Carbon

CO

CO₂

SO₂

DDT is

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Biodegradable pollutant

Nondegradable pollutant

Not a pollutant

An antibiotic

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

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Ozone

Nitrous oxide

Sulphure dioxide

Carbon monoxide

Drawback DDT as presticide is

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I becomes ineffective after some time

It is less effective than others

It is not easily/rapidly degraded in nature

Its high cost

The pH of the rain water in areas where acid rain is the cause of pollution may be

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6.5

5.6

4.5

2.2

Which gas is not a constituent of atmosphere

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Xe

O₃

H₂

F₂

Which is not a method for solid waste management

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Landfill

Incinerating

Recycling

None of these

In incinerating the waste is burnt at

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1000°C

100°C

2000°C

1500°C

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

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Paper

Plastic

Hides of animals

Glass

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