Question

918. Which among the following is a Chemical Change?
a) Burning of coal
d)Painting of Aluminium
Q19. A mixture of Salt and Nanhil
b) Vaporisation of alcohol
c)Melting of wax​

Answer 1

Answer:

,First = Burning of coal.

Second = vaporisation of alcohal

second mein doubt hai fir bhi it is correct.

Explanation:

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