Specific heat capacity and Specific Latent Heat

The graph shows the cooling curve of a substance. At which stages the specific latent heat released?

• AB and CD

• BC and DE

• AB and EF

• BC and CD

The graph shows the cooling curve of a substance.
The specific latent heat released at stages?

• CD and FG
• DE and EF
• EF and FG
• DE and FG

Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?

• Part I

• Part II

• Part III

• Part IV

In which phase is substance exist in a form of solid and liquid.

• AB

• BC

• CD

• DE

• EF

Which phase is substance exist in a form of liquid only.

• AB

• BC

• CD

• DE

• EF

The diagram shows a cooling curve for ice. Which line represents the ice freezing?

• A

• B

• C

• D

• E

The diagram shows a cooling curve for ice. Which line represents the ice in a liquid state (water)?

• A

• B

• C

• D

• E

Why are lines B and D flat?

• The ice is melting

• The ice is freezing

• All of the thermal energy is used to break the bonds

• They stopped the stopwatch

• They stopped heating the ice.

The diagram shows a heating curve for ice. Which line represents the ice melting?

• A

• B

• C

• D

• E

Solid starts to melt at

• P

• Q

• R

• S