Question # 1

Mass per unit volume is:

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Velocity

Dencity

Pressure

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

Which has lowest density?

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liquids

Solids

Gases

Plasma

The escape of gaseous molecules one by one is called ____________.

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Diffusion

Effusion

A & b

Nil

Bucky Balls are used as ________________

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Cutting

Grafting

Lubricants

Nil

Force per unit area is called:

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volume

pressure

weight

density

1 torr = ?

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1 mm of Hg

1 atm

760 mm of Hg

1 pascal

Transition temperature of sulphur is ____________

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95.6

95

95.5

96

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

Solid particles possess which one of the following motions?

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rotational motions

vibrational motions

translation motions

both translational and vibrational motions

Intermolecular forces are of three types and are collectively called ____________

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Nelson' forces

Vander Waal's forces

Neurons

Nil

One atmospheric pressure is equal to how many pascals?

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101325

10325

106075

10523

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