Answer the following:

Give two uses of sulphur dioxide.

Uses of sulphur dioxide are listed below:

● In industry, sulphur dioxide is used to remove coloring matter from sugar hence acts as bleaching agent and it is also used as a preservative i.e. it maintains the colorful appearance of fruits (especially dry fruits) and prevents them from rotting.

● It is widely used for manufacturing sulphuric acid by contact process, it can be also used as a refrigerant in refrigerators and as a solvent in laboratories.