Question
Describe the following with example in each case:
(i) Preservatives
(ii) Tranquilizers.
Solution
(i) Preservatives: The chemical substances which are used to protect food against bacteria, yeast and moulds are called preservatives. The most common preservative used is sodium benzoate C6H5COONa.
(ii) Tranquilizers: Tranquilizers are neurologically active drugs . These medicines act on central nervous system and help in reducing anxiety and relieve tension on the nerves. For example: Valium.
