Which of the following will prove that the melting of wax is a reversible change?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Heat wax in a pan, allow molten wax to cool down, and the wax becomes solid again.

Light the candle, allow it to burn for some time, blow out the candle and measure its length

Heat the wax in a pan and use molten wax to make a candle

Light the candle, allow it to burn for some time and use molten wax to make the candle again.

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Heat wax in a pan, allow molten wax to cool down, and the wax becomes solid again, this proves that melting of wax is a reversible change.
Reversible changes are those changes that can be reversed, and we obtain the original substance. The melting of wax is a reversible change, and we can take some wax in a small pan and allow it to melt by heating it over the burner. The wax (solid) melts to form molten wax (liquid). Upon cooling, this molten wax becomes solid again. This proves that the melting of wax is a reversible change.

Watch 3-min video & get full concept clarity