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  • While lighting a candle, Paheli observed the following changes (i) Wax was melting. (ii) Candle was burning. (iii) Size of the candle was reducing. (iv) Melted wax was getting solidified.

While lighting a candle, Paheli observed the following changes

(i)     Wax was melting.    

(ii)     Candle was burning.   

(iii)    Size of the candle was reducing.    

(iv)    Melted wax was getting solidified.

Of the above, the changes that can be reversed are

(a)     (i) and (ii)

(b)     (ii) and (iii)

(c)     (iii) and (iv)

(d)     (i) and (iv)

Answers (1)

Solid wax can be melted and melted wax gets solidifies again. Hence melting of wax and its solidification is reversible changes.

Hence option (D) is correct.

Posted by

Sumit Saini

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