Question # 1

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

Diamonds is ____________

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Soft

Hard

Bulky

Nil

The reverse of evaporation is:

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Boiling

Diffusion

Condensation

Freezing

Transition temperature of sulphur is ____________

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95.6

95

95.5

96

1 torr = ?

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1 mm of Hg

1 atm

760 mm of Hg

1 pascal

In diamonds, carbon are ____________ bonded.

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Tetrahedrally

Single

Double

None

There are ____________ types of solids.

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1

2

6

4

The absolute zero means:

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273.15 °C

-273.15 °C

0 °C

-373.15 °C

One atmospheric pressure is equal to how many pascals?

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101325

10325

106075

10523

Bucky balls was discovered in ________________

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1965

1975

1985

1995

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

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

Carbon forms ____________ bonds in diamonds.

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4

3

6

9

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