Q119 / 270 · NDA 2017 (Phase 2) · General Ability

Which one among the following chemical is used as washing soda?

A
Calcium carbonate
B
Calcium bicarbonate
Correct answer
C
Sodium carbonate
D
Sodium bicarbonate

Solution

The chemical formula for washing soda is Sodium carbonate ( Na 2 CO 3 ). It is a salt of carbonic acid, a chemical which produces a wide range of salts collectively known as carbonates.

Hence, the correct answer is option: 'C'.

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