Question # 1

The mathematical formula of Charle's law is:

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PV = k

V/T = k

P = VT

T/V = k

Force per unit area is called:

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volume

pressure

weight

density

Which one of the following does not affect the boiling point?

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intermolecular forces

external pressure

nature of liquid

initial temperature of liquid

Transition temperature of sulphur is ____________

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95.6

95

95.5

96

Density of a gas increases, when its:

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temperature is increased

pressure is increased

volume is kept constant

none of these

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

Intermolecular forces are ____________ than chemical bonds.

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Stronger

Weaker

Wqual

Nil

Gases are the lightest form of mater and their densities are expressed in terms of:

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mg cm^-3

g cm^-3

g dm^-3

kg dm^-3

One atmospheric pressure is equal to how many pascals?

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101325

10325

106075

10523

Which one of the following gas diffuses faster?

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hydrogen

helium

fluorine

chlorine

Es is symbol of :

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Erbium

Einsteinium

Europium

Fremium

The vapour pressure of a liquid increase with the:

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increase pressure

increase of temperature

increase of intermolecular forces

increase of polarity of molecules

Carbon forms ____________ bonds in diamonds.

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4

3

6

9

There are ____________ types of solids.

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1

2

6

4

Effusion is a property of:

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Gases

LIquids

Solids

Plasma

Which is kept constant in the Charle's law:

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Pressure

Temperature

Volume

Mass

The absolute zero means:

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273.15 °C

-273.15 °C

0 °C

-373.15 °C

At freezing point which one of the following coexists in dynamic equilibrium?

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gas and solid

liquid and gas

liquid and solid

all of these

T (K) =

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(T) °C + 273

(T) °C -273

(T) °C + 373

(T) °C -373

The transition temperature of sulphur is:

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96 °C

250 °C

18 °C

218 °C

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