A solid substance is at 30°C. To this substance heat energy is suppli – McqOptions

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1.	A solid substance is at 30°C. To this substance heat energy is supplied at a constant rate. Then temperature versus time graph is as shown in the figure. The substance is in liquid state for the portion (of the graph) [RPET 1990, 94]
A.	BC
B.	CD
C.	ED
D.	EF
Answer» C. ED

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