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Question 16.1 Why do we need to classify drugs in different ways ?
Question 16.2 Explain the term, target molecules or drug targets as used in medicinal
chemistry.
Question 16.3 Name the macromolecules that are chosen as drug targets.
Question 16.4 Why should not medicines be taken without consulting doctors ?
Question 16.5 Define the term chemotherapy.
Question 16.6 Which forces are involved in holding the drugs to the active site of enzymes ?
Question 16.7 While antacids and antiallergic drugs interfere with the function of
histamines, why do these not interfere with the function of each other ?
Question 16.8 Low level of noradrenaline is the cause of depression. What type of drugs
are needed to cure this problem ? Name two drugs.
Question 16.9 What is meant by the term ‘broad spectrum antibiotics’ ? Explain.
Question 16.10 How do antiseptics differ from disinfectants ? Give one example of each.
Question 16.11 Why are cimetidine and ranitidine better antacids than sodium
hydrogencarbonate or magnesium or aluminium hydroxide ?
Question 16.12 Name a substance which can be used as an antiseptic as well as
disinfectant.
Question 16.13 What are the main constituents of dettol ?
Question 16.14 What is tincture of iodine ? What is its use ?
Question 16.15 What are food preservatives ?
Question 16.16 Why is use of aspartame limited to cold foods and drinks ?
Question 16.17 What are artificial sweetening agents ? Give two examples.
Question 16.18 Name the sweetening agent used in the preparation of sweets for a diabetic
patient.
Question 16.19 What problem arises in using alitame as artificial sweetener ?
Question 16.20 How are synthetic detergents better than soaps ?
Question 16.21 Explain the following terms with suitable examples
(i) cationic detergents
(ii) anionic detergents
(iii) non-ionic detergents.
Question 16.22 What are biodegradable and non-biodegradable detergents ? Give one
example of each.
Question 16.23 Why do soaps not work in hard water ?
Question 16.24 Can you use soaps and synthetic detergents to check the hardness of
water ?
Question 16.25 Explain the cleansing action of soaps.
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