Question # 1

The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.

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Organic chemistry

Inorganic chemistry

Biochemistry

Nuclear chemistry

Which is used to manufacture of soap?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

Volatility of hydrocarbons deceases with:

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decrease of molecular mass

increase of molecular mass

increase of double or triple bonds

decrease of triple bonds

There are ____________ types of salts.

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2

3

6

8

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

How many percentage of sunlight is absorbed by atmosphere gases.

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12%

18%

24%

30%

Which one of the following statements is not correct about active mass?

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Rate of reaction is directly proportional to activ emass.

Active mass is taken in molar concentration

Active mass is represented by square brackets

Active mass means total mass of substances.

The freezing point of water is:

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10 ^oC

100^oC

0^oC

46^oC

Uric acid is found in

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Urine

Fats

Apple

Grapes

At equilibrium state, when reaction cases to proceed, it is called:

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

Which one of the following is not the characteristics of monosaccharide?

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White crystalline solids

Soluble in water

Hydrolysable

Reducing is nature

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

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