MCQ
Camphor is often used in molecular mass determination because
- ✓It is volatile
- BIt is solvent for organic substances
- CIt is readily available
- DIt has a very high cryoscopic constant
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$AB \to$ Isothermal expansion
$AC \to$ Adiabatic expansion
Which of the following options is not correct ?

$N_2 + 3H_2 \rightleftharpoons 2NH_3 \,;$ $K_1$
$N_2 + O_2 \rightleftharpoons 2NO\,;$ $K_2$
$H_2 + 2 O_2 \rightleftharpoons H_2O\,;$ $K_3$
The equilibrium constant $(K)$ of the reaction :
$2NH_3 + \frac{5}{2} \overset K \leftrightarrows 2NO + 3H_2O$