Question # 1

Carbon monoxide is harmful to us because.

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It paralyses the lungs.

It damages lungs tissues.

It reduces oxygen carrying ability of haemoglobin

It makes the blood coagulate.

The impurities associated with the minerals are known as:

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Metallurgy

Ores

Gangue

Compounds

Which one of the following salts makes the water permanent hard.

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NaCO₃

NaHCO₃

Ca(HCO₃)₂

CaSO₄

Example of pest is

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Weeds

Herbs

Insect

All of them

Which one of the following is a fat soluble vitamin?

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A

E

K

All of these

Which are responsible for transmitting genetic information form generation to generation:

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vitamins

lipids

proteins

Nucleic acids

Enzymes are chemically;

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lipids

carbohydrates

proteins

vitamins

A salt always

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Contain ions

Contains water of crystallization

Dissolves in water

Forms crystals which conduct electricity

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

The word acid is derived from the.

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Greek word

Latin word

English word

Arabic word.

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

Conversion of dead plants into coal by the action of bacteria and heat is called.

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Carbonization

Catenation

Hydrogenation

Cracking

Which one of the following is Lewis base?

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NH₃

BF₃

H⁺

AlCl₃

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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers

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