MCQ
$\Delta H_{fusion}$ of a substance is $'x'$ and $\Delta H_{vap}$ is $'y'$, then $\Delta H_{sublimation}$ will be
- ✓$x + y$
- B$x -y$
- C$x/y$
- D$y/x$

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$MgO + 2HCl \longrightarrow MgCl_2 + H_2O$
Given :
Statement $(I)$ : $A$ Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities.
Statement $(II)$ : Blood is naturally occurring buffer solution whose $\mathrm{pH}$ is maintained by $\mathrm{H}_2 \mathrm{CO}_3 / \mathrm{HCO}_3$ concentrations.
In the light of the above statements, choose the correct answer from the options given below.
