Question

Raju observed the following changes while lighting a candle. The changes that can be reversed are: a) Wax was melting and melted wa/ was getting solidified b) Size of the candle was reducing, melted wax was getting solidified c) Candle was burning, size of the candle was reducing d) Wax was melting, candle was burning​

Answer 1

Answer:

a) Wax was melting and melted wax was getting solidified.

Explanation:

When the molten wax drips down, it solidifies. And then the solidified wax can be liquified again by providing external heat. Therefore, we can conclude that opt 'a' i.e Wax was melting and melted wax was getting solidified is a reversible change.