Question

Match the acidic gases with their uses.

• A. Sulphur dioxide
• B. Nitrogen dioxide
• C. Chlorine

Answer 1

1. Sulphur dioxide inhibits the activity of enzymes that causes browning of food products. It also prevents microbial spoilage.

2. Nitrogen dioxide is used as an oxidiser in rocket fuelas it is safer as compared to its alternatives and can be stored as a liquid at room temperature.

3. Chlorine is a powerful oxidising agent. It oxidises a variety of coloured objects, turning them colourless and hence, is used as a bleach.