MCQ
The reagent which is used to distinguish between propene and propyne is
- ABromine
- BAlkaline $KMn{O_4}$
- ✓Ammoniacal $AgN{O_3}$
- DOzone
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Assertion $(A) :$ At $10^{\circ} C$, the density of a $5\, M$ solution of $KCl$ [atomic masses of $K$ and $Cl$ are $39$ and $35.5\, g \,mol ^{-1}$ ]. The solution is cooled to $-21^{\circ} C$. The molality of the solution will remain unchanged.
Reason $(R):$ The molality of a solution does not change with temperature as mass remains unaffected with temperature.
In the light of the above statements, choose the correct answer from the options given below
$\mathop {C{H_3}OH}\limits_1 + \mathop {{{(C{H_3})}_2}NH}\limits_2 \rightleftarrows C{H_3} - {O^ - }C{H_3} - \mathop {\mathop N\limits_{\mathop |\limits_H } H}\limits^ + - C{H_3}$