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Question


A melted chocolate is kept in a refrigerator. It solidifies again. This is an irreversible change.


Options:
A .   True
B .   False
C .   Irreversible and chemical
D .   Reversible and chemical
Answer: Option B
:
B

When a melted chocolate is kept in a refrigerator it solidifies on cooling. However when it will be kept at room temperature, it will absorb heat and melt again. Hence, it is a reversible process..



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