Question # 1

the homogeneous mixture of two or more substances is ____________.

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Solution

Stronger

Suspension

None

O3, Ozone is _________ molecules.

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Homoatomic

Hetroatomic

Monoatomic

Nil

There are _________ types of bonds.

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1

2

3

4

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

The molecular mass of water is

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16 amu

14 amu

18 amu

20 amu

For ________________ "like dissolves like".

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Metals

Bonds

Solubility

Nil

The property of being polar in nature is called:

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Polarity

Chemistry

Both

Nil

Gain of electrons in a reaction is called ____________reaction.

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Oxidation

Reduction

Both

Nil

The earth is made up of ___________ % of iron.

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4

5

6

7

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

The simplest of these has formula:

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C60

C10

V20

C30

Which one of the following halogen has lowest electronegative?

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fluorine

chlorine

bromine

iodine

The SI unit of pressure is:

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N

N/m²

Pascal

atm

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