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  • Which of the following change cannot be reversed?(a) Hardening of cement (b) Freezing of ice cream (c) Opening a door(d) Melting of chocolate

Which of the following change cannot be reversed?

(a)     Hardening of cement

(b)     Freezing of ice cream

(c)     Opening a door

(d)     Melting of chocolate

Answers (1)

Hardening of cement cannot be reversed because once hardened it cannot come back to its original shape.

Hence option (A) is correct.

Posted by

Sumit Saini

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