Question

On reaction with chlorine in sunlight, sulphur dioxide gives:

• A. addition reaction
• B. displacement reaction
• C. substitution reaction
• D. all of these

Answer 1

Answer: (A)

addition reaction

Sulphur dioxide reacts with chlorine to produce thionyl chloride $SOC{l}_2$ and dichlorine oxide which is used as a bleach for wood pulp and textiles.

So, on reaction with chlorine in sunlight, sulphur dioxide gives thionyl chloride. In this reaction chlorine is added to $S{O}_2$. So it is addition reaction.

$S{O}_2+2C{l}_2\to SOC{l}_2+C{l}_{2}O$.

Hence option A is correct