Question

An inorganic compound first melts then resolidifies and then liberates a gas. It may be.

• A. $MnO_{2}$
• B. $Al_{2}O_{3}$
• C. $KMnO_{4}$
• D. $KClO_{3}$

Answer 1

Answer: (D)

$KClO_{3}$

Answer 2

$2KClO_{3} \rightarrow 2KCl + 3O_{2}$.