Question # 1

Poisoning of CO can be reveresed by giving oxygen at pressure:

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low

least

medium

High

Photochemical smog consists of higher concentration of:

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Oxidants

Ozone

a & b

NO₃

White marble buildings are effected by?

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O₂

SO₂

CI₂

CFC_s

Coal contains percentage of sulphur:

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1-9%

5-9%

6-9%

7-9%

Most harmful of biosphere is

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Deforestation

Nuclear fail out

Salinity

Water logging

The normal amount of overhead ozone is about

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250 Du

300 DU

350 DU

400 DU

A single chloride free redical can destroy bow many ozene molecules?

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100

100000

10000

10

Which gas is not a constituent of atmosphere?

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Xe

O₃

H₂

F₂

Choose the correct statements

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SO₂affects the nucleus

SO₂affects plasmodesmata

SO₂affects cell wall

SO₂affects all membrane systems

The normal amount of overhead ozone is about in DU:

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150

250

350

450

Detergents are surfactants and they reduce the

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B.P. of water

Surface tension of water

Wetting ability of water

None of these

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

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Live stock wastes

Oil spilage

detergents

pesticides

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called

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Primary pollutant

Secondary pollutant

Tertiary pollutant

None of these

The temperature in the incineration of industrial and hazardons waster process had a range

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950 to 1300°C

500 to 900°C

250 to 500°C

900 to 1000°C

Pan is an irritant to human beings and it affects

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Eyes

Nose

Hair

Skin

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

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CCl₄

CHCl₃

CH₃- CH₂- CH₂- CH₃

CHCl₂- CHF₂

Which not a method for solid waste management>

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Landfill

Incinerating

Recycling

None of these

Fungicides are the pesticides which

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Kill plants

Kill herbs

Kill insects

Control the growth of fungus

Men residence time of methane in atmosphere in years is:

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1-7

2-7

3-7

4-7

The force which hold the atoms together to form a compound is called:

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Dispersion forces

London forces

A chemical bond

Ven der wall's forces

Chemical equilibrium involving reactants and products in more than one phase is called:

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Homogeneous

Heterogeneous

Dynamic

Static

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