The number of molecules of water of crystallisation present in washing soda crystals is:(a) Five
(b) Two
(c) Ten
(d) Seven

Academic Chemistry NCERT Class 10

Correct Answer: (c) Ten

Explanation: Washing soda has ten molecules of water of crystallisation. Its formula is Na₂CO₃. 10 H₂O.

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Updated on: 10-Oct-2022

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