MCQ
$KI$ is oxidised into $I_2$ by using the reagent
- A$KMnO_4$ (neutral or slightly alkaline solution)
- BOzone (alkaline solution)
- ✓$CuSO_4$ solution
- DAll of these
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For the reaction $3 CaO +2 Al \rightarrow 3 Ca + Al _{2} O _{3}$ the standard reaction enthalpy $\Delta_{ r } H ^{0=}$ .......... $kJ$.
(Round off to the Nearest Integer).
$Ca(OH)_2 + H_3PO_4\to CaHPO_4 + 2H_2O$ is
