Question # 1

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

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100

100000

10000

10

The temperature in the incineration of industrial and hazardous waste process has a range.

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900 to 1000 ^oC

250 to 500^oC

950 to 1300^oC

500 to 900^oC

Which one of the following is secondary pollutant of atmosphere.

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CO

NO2

SO2

H2SO4

Ecosystem is smaller unit of

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Lithosphere

Hydroshpere

Amosphere

Biosphere

Which gas is cause of Asthma

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O₃

O₂

SO₂

CO₂

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

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KMnO₄

O₃

Alums

Chloramines

The news paper can be recycled again and again as many times as

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5

3

4

2

In water the concentration of dissolved O₂should be

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1-3 ppm

2-4 ppm

4-8 ppm

8-12 ppm

Whcih water will be considered as polluted water.

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High value of COD

Low value of COD

High value of DO

Low value of BOD

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects

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eyes

ears

stomach

nose

In which layer of atmosphere, ozone is present.

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Thermosphere

Mesosphere

Stratosphere

Troposphere

The residence time of NO is

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Few hours

1 day

3 days

4 days

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

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Reducing smog

Oxidizing smog

Natural smog

Neutral smog

Water is disinfected by a substance to avoid toxification

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KMnO₄

Alums

O₃

Cl₂

A single chloride free radical can destroy how many ozone molecules

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100

100,000

100,00

unlimited

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

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KMnO4

O3

Alum

Chloramines

The pH of unpolluted rain water should be

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5.00

5.60

6.50

7.00

Which is a secondary pollutant

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Carbonic acid

CO₂

SO₂

CO

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