Multiple choice general knowledge

'Glauber's salt' actually is -

  1. sodium sulfate

  2. zinc sulfate

  3. sodium nitrate

  4. sodium carbonate
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A Correct answer
Explanation

Glauber's salt is sodium sulfate decahydrate (Na2SO4·10H2O), named after the German chemist Johann Rudolf Glauber who discovered it in the 17th century. It's used in medicine as a mild laxative and in manufacturing. The decahydrate form means it has 10 water molecules in its crystal structure.

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