A) Irreversible change, melted wax cannot be solidified again.
B) Reversible change, melted wax can be solidified again.
C) Periodic change, candle melts after an interval of an hour.
D) Chemical change, melting of candle wax results in change in composition of candle.
Correct Answer: B
Solution :
Given picture shows reversible change as melted wax can be solidified again.You need to login to perform this action.
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