Chemistry in Every Day Life TEXTBOOK Solution

Question 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 ?

Solution:

Most of the dru gs taken in doses higher than recommended may cause harmful effect and act as poison. Therefore, a doctor should always be consulted before taking medicine.

Question 2.

With reference to which classification has the statement, “ranitidine is an antacid” been given?

Solution:

This statement refers to the classification according to pharmacological effect of the drug because any drug which will be used to counteract the effect of excess acid in the stomach will be called antacid.

Question 3.

Why do we require artificial sweetening agents?

Solution:

Those people who have diabetes or who need to control intake of calories, they cannot take sugar. They need its substitute. These substitutes are called artificial sweeteners. These are excreted from the body in urine unchanged.

Question 4.

Write the chemical equation for preparing sodium soap from glyceryloleate and glyceryl palmitate. Structural formulae of these compounds are given below.

  1. (C15H31COO)3C3H5 – Glyceryl palmitate
  2. (C17H33COO)3C3H5 – Glyceryl oleate.

Solution:

NCERT Solutions for Class 12 Chemistry Chapter 16 Chemistry in Every Day Life 1

Question 5.

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

NCERT Solutions for Class 12 Chemistry Chapter 16 Chemistry in Every Day Life 2

Solution:

NCERT Solutions for Class 12 Chemistry Chapter 16 Chemistry in Every Day Life 3

The functional groups present in the molecule are alcoholic group and ethereal linkage (—O—).

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