1.

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are:

A. Washing soda and soda ash.
B. Baking soda and dead burnt plaster.
C. Washing soda and dead burnt plaster.
D. Baking soda and soda ash.
Answer» B. Baking soda and dead burnt plaster.


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