Chapter 16 – Chemistry in Everyday Life Questions and Answers: NCERT Chemistry in Everyday Life for Class 12 Chemistry

Class 12 Chemistry chapter 16 - Chemistry in Everyday Life - Questions and Answers of NCERT Book Solutions.

16.1. Sleeping pills are recommended by doctors to the patients suffering from sleeplessness but it is not advisable to take its doses without consultation with the doctor. Why?

Ans: Most of drugs taken in doses higher than recommended may produce harmful effects and act as poison and cause even death. Therefore, a doctor must always be consulted before taking the drug.

16.2. “Ranitidine is an antacid” With reference to which classification, has this statement been given?

Ans: Ranitidine is labelled as antacid since it is quite effective in neutralising the excess of acidity in the stomach. It is sold in the market under the trade name Zintac.

16.3. Why do we require artificial sweetening agents?

Ans: To reduce calorie intake and to protect teeth from decaying, we need artificial sweeteners.

16.4. Write the chemical equation for preparing sodium soap from glyceryl oleate and glyceryl palmitate. Structures of these compounds are given below:
(i) (C15H31COO)3C3H5-Glyceryl palmitate
(ii) (C17H32COO)3C3H5-Glyceryl oleate

Ans:

16.5. Following type of non-ionic detergents are present in liquid detergents, emulsifying agents and wetting agents. Label the hydrophilic and hydrophobic part in the molecule. Identify the functional group (s) present in the molecule.

Ans:

Functional groups present in the detergent molecule are:
(i)ether
(ii)1°alcoholic group