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The antibiotics can be either bactericidal or bacteriostatic.

Bactericidal	Bacteriostatic
1. An antibiotic which kills the micro-organism in the body.	1. An antibiotic which inhibit or control the growth of micro-organism.
2. Example: Penicillin, Of loxacin.	2. Example: Erythromycin, Tetracy-cline, Chloramphenicol.

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132.

Explain what do you understand by spectrum of antibiotics. Give examples.

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133.

Explain the considerations in drug designing.

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134.

Describe the following with suitable examples:
(i) Tranquilizers.
(ii) Antifertility drugs.
(iii) Antihistamines.

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135.

Describe the following with suitable examples:
(i) Preservative
(ii) Artificial sweeteners
(iii) Antioxidants
(iv) Edible colours.

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136. What are detergents? Give their scheme of classification. Why are detergents preferred over soaps?

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137.

A substance used to relieve pain is called __________.

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138.

_____________ is used as an antiseptic and disinfectant.

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139.

A drug that has sedatative effect is called a _________.

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140.

Detergrent molecules associated with ___________ hydrocarbon tail is a source of pollution.

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