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Chemistry in Everyday Life — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryChemistry in Everyday Life3 Marks
Question
  1. Describe and illustrate with an example each, a mordant dye and a detergent.
  2. Give an example of a liquid propellant.
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Answer

  1. Mordant dye: These dyes are primarly used for dyeing of wool in the presence of metal ions. e.g. Alizarin.
Detergent: Detergents are sodium salts of long chain sulphonic acid or sulphonates. e.g. sodium alkyl benzene sulphonates.
  1. Liquid $O_2,$ Nitrogen, Nitrogen tetraoxide or nitric acid as an oxidiser.
Kerosene, alcohol, hydrazine, liquid hydrogen as fuel.

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