Question # 1

Alkanes are least reactive compounds because they are.

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Saturated hydrocarbons.

Unsaturated hydrocarbons.

Both a and b

None of the above.

Effects of ozone depletion are following except the one.

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Increases infectious diseases

Increases crops production

Can cause skin cancer

Can cause climatic changes.

The % age of carbon is bituminous is

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60

70

80

90

Marsh gas is mostly consisted of.

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Butane

Propane

Ethane

Methane

Blonde hair contains compounds of:

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molybdenum

iron

titanium

copper

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Acids turn

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Blue litmus red

Red litmus blue

Blue litmus green

Blue litmus blue

Methyl butanoate smell like.

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Apple

Mange

Lemon

Grapes

Ozone id beneficial for us as it:

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absorbs infrared radiations

absorbs ultraviolet radiation

absorbs chlorofluorocarbons

absorbs air pollutants

Which one of the following is polmerized to from benzene?

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ethane

ethene

methane

ethyne

Which is disaccharide?

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Glucose

Fructose

Sucrose

Starch

The pH of acid rain.

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2

3

4

5

___________ is not mineral acid.

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HCl

CH₃COOH

H₂SO₄

HNO₃

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