Question # 1

The earth is made up of ___________ % of calcium.

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4

5

6

7

The solution in which one component is aqueous ____________ solution.

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Aqueous

Binary

All

None

The earth is made up of ___________ % of iron.

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4

5

6

7

The example of solution of a solid solute in a solid solvent is

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Brass

Fog

Cheese

Air

Transition temperature of sulphur is ____________

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95.6

95

95.5

96

________________ is the shortest period.

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6th

8th

2nd

1st

The SI unit of pressure is:

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N

N/m²

Pascal

atm

The simplest of these has formula:

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C60

C10

V20

C30

A _________ is a pure substance is made up of two or more elements.

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Mixture

Elements

Solution

Compound

By electrolytic refining of copper , it is ____________ % pure.

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98

99

99.99

100

Which one is moderate reactive metal?

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Pb

Na

Ca

Mg

O3, Ozone is _________ molecules.

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Homoatomic

Hetroatomic

Monoatomic

Nil

T (K) =

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(T) °C + 273

(T) °C -273

(T) °C + 373

(T) °C -373

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