First slide
Questions based on phase change
Question

Consider the following statements.
(A) A solid material is supplied heat at constant rate.The temperature of the material is changing with the heat input as shown in Fig.
    If CD = 2AB then latent heat of vaporisation of substance is double that of fusion.
(B) Latent heat of fusion  AB and Latent heat of vaporisation  CD.

Select the correct option.
(a) (A) is false but (B) is true.
(b) Both (A) and (B) are true.
(c) (A) is true but (B) is false.
(d) Both (A) and (B) are false.  
 

Moderate
Solution

Both A and B   are true from the given data.

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