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School Physics Quiz : Change of State & Latent Heat


Answer the following questions based on the change of state and latent heat.

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Multiple choice

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1.

Fusion point and _______ occur at the same temperature.

  vaporizaton point

  fusion point

  solidification point

  boiling point

  Half-n-half Clue
 

2.

Vaporization point and _______ have the same numerical value.

  fusion point

  melting point

  solidification point

  liquefaction point

  Half-n-half Clue
 

3.

The boiling point of salt water is less than 100oC.

  True

  False

 

4.

An increase in pressure results in an increase in the freezing point of a substance.

  True

  False

 

5.

The process by which a _______ changes into its gaseous state at a certain fixed temperature by the absorption of heat is called vaporization.

  liquid

  solid

 

6.

If the specific latent heat of vaporization for water is 2.25 kJ/g, then the amount of heat required to vaporize 28 g of boiling water to steam at 100oC is

  63 J

  630 J

  6300 J

  63000 J

  Half-n-half Clue
 

7.

The amount of heat required to change a unit mass of a liquid into a gas, without changing its temperature, is referred to as the specific latent heat of _______.

  fission

  vaporization

  fusion

  Half-n-half Clue
 


 
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