AFNS — AFNS Chemistry

States of Matter


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#17

Graham law relates:

A) Rate and molar mass

B) Colour and mass

C) Volume and colour

D) Pressure and colour

Answer:   A
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#18

Liquefaction of gases needs:

A) Low T and high P

B) High T only

C) Low P only

D) Vacuum only

Answer:   A
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#19

Critical temperature is:

A) Above which gas cannot liquefy by P alone

B) Boiling point

C) Freezing point

D) Room temp

Answer:   A
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#20

Evaporation occurs at:

A) Surface at any temperature

B) Only boiling point

C) Only 0 K

D) Only solids

Answer:   A
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#21

Boiling occurs when:

A) Vapour pressure equals atmospheric

B) Surface only

C) Only in vacuum

D) Never in liquids

Answer:   A
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#22

Vapour pressure increases with:

A) Temperature

B) Decreasing T

C) Pressure only

D) Volume only

Answer:   A
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#23

Heating curve plateau at melting:

A) Latent heat of fusion

B) Kinetic only

C) No energy

D) Ionization

Answer:   A
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#24

Sublimation is:

A) Solid to gas direct

B) Gas to solid only

C) Liquid to gas

D) Gas to liquid

Answer:   A
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