The graph above illustrates the variation of temperature \(\theta\) with time (t) for a solid that is being heated. Which processes take place at segments P and Q respectively?
Attached Figure / Diagram
A
Freezing and vaporization
B
Evaporation and solidification
C
Melting and boiling
D
Condensation and evaporation
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Since the substance is solid, it will need heat to melt to liquid and once the liquid starts boiling temperature will remain the same.
Source: Myschool Past Questions Archive (Record #59043)