MCQ
Hard soaps are:
  • A
    Calcium salts of higher fatty acids.
  • B
    Magnesium salts of higher fatty acids.
  • C
    Potassium salts of higher fatty acids.
  • Sodium salts of higher fatty acids.

Answer

Correct option: D.
Sodium salts of higher fatty acids.
Sodium salts of higher fatty acids are called hard soaps. A good example is sodium stearate$(\mathrm{C}_{12} \mathrm{H}_{35} \mathrm{COONa}).$

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