Free NCERT Solutions For Class 12 Chemistry Chapter 16 : Chemistry in Everyday Life Free PDF Download

Question 1:
Why do we need to classify drugs in different ways?

Question 2:
Explain the term target molecules or drug targets as used in medicinal chemistry.

Question 3:
Name the macromolecules that are chosen as drug targets.

Question 5:
Define the term chemotherapy

Question 6:
Which forces are involved in holding the drugs to the active site of enzymes?

Question 7:
While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

Question 8:
Low level of noradrenaline is the cause of depression. What types of drugs are needed to cure this problem? Name two drugs

Question 10:
How do antiseptics differ from disinfectants? Give one example of each.

Question 11:
Why are cimetidine and ranitidine better antacids than sodium hydrogen carbonate or magnesium
or aluminium hydroxide?

Question 14:
What is tincture of iodine? What is its use?

Question 15:
What are food preservatives?

Question 16:
Why is use of aspartame limited to cold foods and drinks?

Question 17:
What are artificial sweetening agents? Give two examples

Question 18:
Name a sweetening agent used in the preparation of sweets for a diabetic patient

Question 19:
What problem arises in using alitame as artificial sweetener?

Question 21:
Explain the following terms with suitable examples. (i) Cationic detergents
(ii) Anionic detergents and
(iii) Non-ionic detergents

Question 22:
What are biodegradable and non-biodegradable detergents? Give one example of each.

solution 22:

Question 23:
Why do soaps not work in hard water?

Question 24:
Can you use soaps and synthetic detergents to check the hardness of water?

Question 25:
Explain the cleansing action of soaps

Question 26:
If water contains dissolved calcium hydrogen carbonate, out of soaps and synthetic
detergents which one will you use for cleaning clothes?

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?

Question 2:
With reference to which classification has the statement, ‘ranitidine is an antacid” been given?

Question 3:
Why do we require artificial sweetening agents?

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.