Question # 1

The alkanes consisting of C₅ to C₁₀

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gases

liquids

solid

plasma

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

Formula of soda ash is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₃PO₄

Oxidation of ethene with KMnO₄produces.

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oxalic acid

glyoxal

ethene glycol

Propene glycol

Which of the following gas is used to destroy harmful bacteria in water.

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Iodine

Chlorine

fluorine

Bromine

A salt is not composed of

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A metallic cation

Non -metallic anion

an anion of a base

An anion of an acid

The region of ozone decomposition in stratosphere is.

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20 km

30 km

40 km

50 km

In a chemical reaction, the substance that combine are called.

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Reactant

Products

Mass

Material

Which help to keep the bowel functioning property

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Dietary fiber

Vitamins

Lipids

Carbohydrates

Imperial chemical industries was established in.

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1942

1944

1950

1990

The product of Lewis acid-base reaction is called adduct. The bond between the adduct species is.

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Ionic

Covalent

Metallic

Co-ordinate covalent

Percentage of nitrogen in atmosphere is:

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20.94%

78.09%

0.93%

0.03%

The order of reactivity of hydrogen halides with alkenes is.

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HI>HBr

HBr>HI

HCl>HBr

HBr < HCl

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