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NDA2021General AbilityGeneral ScienceActual

Common salt ( NaCl ) is not used as a raw material for preparation of which one of the following compounds ?

Options

  1. ABleaching powder
  2. BBaking soda
  3. CPlaster of Paris
  4. DWashing soda

Correct answer

C. Plaster of Paris

Step-by-step solution

Sodium carbonate can be obtained by heating baking soda, recrystallization of sodium carbonate gives washing soda. It is also called basic salt. Plaster of Paris is obtained by heating gypsum. Thus NaCl is not used in formation of plaster of paris.

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