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An inorganic substance on heating libera...

An inorganic substance on heating liberates oxygen and turns an acidified solution of KI brown and also reduces acidified `KMnO_4`. The substance is

A

`SO_2`

B

`KNO_3`

C

`H_2O_2 `

D

`SO_3`

Text Solution

Verified by Experts

The correct Answer is:
C
`2H_2O_2overset(Delta)to 2H_2O+O_2`
`2KI+H_2O_2to 2KOH+I_2`
`2KMnO_4 + 3H_2SO_4 +5H_2O_2 to K_2SO_4 + 2MnSO_4 + 8H_2O +5O_2`
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