Question

A solution of sulphur dioxide in water reacts with $H_{2}S$ precipitating sulphur. Here sulphur dioxide acts as.

• A. As oxidising agent
• B. A reducing agent
• C. An acid
• D. A catalyst

Answer 1

Answer: (A)

As oxidising agent

Answer 2

When sulphur dioxide is react with $H_{2}S$ here $SO_{2}$ act as an oxidising agent and $H_{2}S$ act as reducing agent.