(a) Name the changes in the terms of process P, Q, R and
S.
(b) Which of the changes are exothermic
and endothermic?
Answer:
(a) T' is fusion
(melting), 'Q' is boiling, 'R' is condensation and 'S' is sublimation.
(b) 'P', 'Q' and 'S' are endothermic
and 'R' is exothermic.
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