Question # 1

The percentage of potable water on earth is.

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2%

0.2%

0.02%

0.002%

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

Human body uses carbohydrates in the form of

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Glucose

Maltose

Fructose

Galatose

When Bronsted and Lowry put forward acid base concept?

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1913

1923

1933

1943

Eye inflammation is caused by the deficiency of vitamin.

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Vitamin D

Vitamin C

Vitamin B

Vitamin A

pH of acid rain is:

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7-5

6-7

1-2

4-5

Pitch is black residue of

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Coke

Coal-tar

Coal

Coal gas

Water is a;

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strong electrolyte

non-electrolyte

weak electrolyte

natural compound

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

Amino acid are the building blocks of .

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Proteins

Carbohydrates

Vitamins

fats

A group of gases that maintains temperature of atmosphere is.

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Carbon dioxide and water vapours

Nitrogen and carbon dioxide

Thermosphere

Troposphere

The major constituents of troposphere are:

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carbon dioxide and argon

nitrogen and oxygen

argon and oxygen

carbon dioxide and oxygen

Ozone id beneficial for us as it:

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absorbs infrared radiations

absorbs ultraviolet radiation

absorbs chlorofluorocarbons

absorbs air pollutants

Which acid is used for food preservation?

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Hydrochloric acid

Benzoic acid

Sulphuric acid

Nitric acid.

Uric Acid is present in

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Apple

Fats

Urine

Grapes

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