Question # 1

P1V1 = P2V2 is mathematical form of ____________ law.

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Bohr's

Charles

Boyle's

Nil

The mathematical formula of Boyle's law is:

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PV = k

PT = k

V = kT

T = Vk

The earth is made up of ___________ % of iron.

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4

5

6

7

All metals are solid at ________________ temperature.

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Room

High

Low

None

Atoms of elements combine chemically to form:

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Mixtures

compounds

solutions

ions

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

Atoms as a whole is _________

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+

_

No

Neutral

The practical unit of concentration is

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%v/v

%v/m

%m/m

M

Concentration is ratio of:

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solvent to solute

solute to solution

solvent to solution

both a and b

The symbol of lead us

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As

Pb

Sb

Na

The types of solutions on the basis of their physical states are

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3

6

9

12

All ionic compound are ________________ at room temperature.

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Liquid

Solids

Gas

Plasma

Which one of the following is the most penetrating?

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protons

electrons

neutrons

alpha paticles

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