Which of the following statements about the process of melting of a solid are true? The temperature of the solid will
I. remain steady until melting starts.
ll. keep rising until melting starts,
Ill remain steady as melting proceeds.
V, keep rising as melting proceeds.
A
I and llI only
B
IlI and IV only
C
Il and Ill only
D
ll and IV only
Verified Correct Answer: C.
Physical Principles & Numerical Solution
During change of state, there is no change in temperature, for a solid to change to liquid, heat must be supplied and it starts rising again after melting has taken place. therefore, the temperature rises before melting takes place remains steady during melting, and keeps rising after melting.
Source: Myschool Past Questions Archive (Record #59477)