Question

1.Explain how antacid works.
2. Define olfactory indicators. Name two subtances which can be used as olfactory indicator.

Answer 1

Explanation:

1.

Ans: Hyperacidity is caused by excess of hydrochloric acid in stomach. Antacid is basic in nature. It neutralizes excess of acid and gives relief from pain caused by hyperacidity

2.

Ans: Those substances whose smell (odour) changes in acidic or basic solution are called olfactory indicators, e.g. onion and vanilla.