Solve this following


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

  1. Washing soda and soda ash.

  2. Washing soda and dead burnt plaster.

  3. Baking soda and dead burnt plaster.

  4. Baking soda and soda ash.

Correct Option: 1


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