Question # 1

The region of earth capable of supposing life is called.

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Atmosphere

Bisphere

Dithosphere

Hydrosphere

Peroxyacetyl nitrate is an irritant to humab beings and it affects

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Eyes

Ears

Stomach

Nose

The normal amount of overhead ozone is.

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300 DU

350 DU

400 DU

450 DU

The pH range of the acid rain is.

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7-6.5

6.5-6

6-6.5

Less than 5

The smog which have high contents of SO2 in it, is called.

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Reducing smog

Oxidizing smog

Natural smog

Neutral smog

The pH range of the acid rain is

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7-6-5

6.6-6

6-5.6

less than 5

Ecosystem is smaller units of.

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Lithosphere

Hydrosphere

Atmosphere

Biosphere

The minimum temperature of troposphere is.

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-2^oC

-56^oC

-100^oC

15^oC

Fungicides are teh pesticides which

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Control the growth of fungus

Kill insects

Kill plant

Kill herbs

A single chloride free radical can destroy how many ozone molecules.

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100

100000

10000

10

The mean residence time of methane in atmosphere in

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1-2 years

3-4 years

3-5 years

3-7 years

Water is disinfected by a substance to avoid toxification

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KMnO₄

Alums

O₃

Cl₂

The residence time of NO is

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Few hours

1 day

3 days

4 days

On earth polar ice caps and glacier contains H2O

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1%

2%

3%

10%

Ecosystem is smaller unit of

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Lithosphere

Hydroshpere

Amosphere

Biosphere

The avoid teh formation of toxic compounds with chlorine which substance is used for disinfecting water.

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KMnO4

O3

Alum

Chloramines

Ozone is mostly produced in

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Tropical region

North polar region

South polar region

Thermosphere zone of atmosphere

Which gas is cause of Asthma

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O₃

O₂

SO₂

CO₂

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