Question

Statement 1 : Bleaching action of $SO_2$ is temporary and by reduction.
Statement 2 : The colour of material is regained due to oxidation by air.

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$
• C. If Statement $1$ is true but Statement $2$ is false
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (A)

$SO_2 + 2H_2O \rightarrow H_2SO_4 + 2H$
Coloured matter $+ H \rightarrow$ Colourless $\xrightarrow{\Delta}$ Coloured.