Observe the given figure carefully and select the
correct statements.
I. Processes P and Q are exothermic.
II. Processes S and R are exothermic.
III. Processes S and R are endothermic.
IV. Processes P and Q are endothermic.
V. P, Q, R and S are condensation, freezing, melting
and evaporation respectively.
VI. P, Q, R and S are evaporation, freezing, melting
and condensation respectively.
AII, IV and VI only
BII, IV and V only
CI, III and V only
DI, III and VI only
please explain