MCQ
Evaporation of water is
- ✓An endothermic change
- BAn exothermic change
- CA process where no heat change occurs
- DA process accompanied by chemical reaction
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(Molar mass of $Ca(OH)_2, Na_2SO_4$ and $CaSO_4$ are $74, 143$ and $136\, g\, mol^{-1}$ respectively; $K_{sp}$ of $Ca(OH)_2$ is $5.5 \times 10^{-6}$)
Product $(A)$ is