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Chemistry in Everyday Life — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryChemistry in Everyday Life3 Marks
Question
Explain the following types of substances with one suitable example, for each case:
  1. Cationic detergents.
  2. Food preservatives.
  3. Analgesics.
✓

Answer

  1. Cationic Detergents: Cationic detergents are quarternary ammonium salts of amines with acetates/chlorides/bromides as anions eg: Cetyltrimethyl ammonium bromide.
  2. Food preservatives: are the compounds which prevent spoilage of food due to microbial growth. eg: sodium benzoate, vinegar.
  3. Analgesics: reduce or abolish pain without causing impairment of consciousness, mental confusion, incoordination or paralysis or some other disturbances of nervous system eg: aspirin, morphine, codeine.

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