question_answer

  Describe the following with suitable example : (a) Transquilizers                                                                                                                                                              1 (b) Preservatives                                                                                                                                                                              1 (c) Analgesics.                                                                                                                                                                                   1

Answer:

  (a) Transquilizers: The chemical substances used to cure mental diseases are Transquilizers. They reduce anxiety and tension, e.g., Calmpose, veronal etc.                                                                                                                             1 (b) Preservatives: Chemical substances which are added to food to improve its keeping properties, appearance, taste, odour and food value are called preservatives, e.g. Sodium benzoate.                           1                 (c) Analgesics: Those drugs which relieve or decrease pain are termed as analgesics, e.g., Aspirin, analgin,                 saridon etc.                                                                                                                                                                        1