Formaldehyde reacts with ammonia to give :-

In the following reaction:

${\left({\mathrm{CH}}_3\right)}_2\mathrm{CO}\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{\mathrm{Mg}-\mathrm{Hg}}{\to }}\mathrm{A}\stackrel{{\mathrm{H}}^{+},\mathrm{\Delta }}{⟶}\mathrm{B}$,
$\mathrm{A}$ and $\mathrm{B}$ are, respectively:

Consider following reactions:

$\mathrm{Ph}-\mathrm{OH}\stackrel{\mathrm{Na}\text{ metal }}{\to }\text{ Gas }\mathrm{A}$

$\mathrm{Ph}-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-\mathrm{OH}\stackrel{{\mathrm{NaHCO}}_{\mathrm{3}}}{\to }\text{Gas} \mathrm{B}$

The sum of molecular masses of gas $\mathrm{A}$ and $\mathrm{B}$ will be equal to:

How many of the following acids will show higher reactivity towards esterification reaction as compared to acetic acid?

How many among the following compounds will give the above result?

$i.$ Cyclohexanone
$ii.$ Acetone
$iii.$ Propionaldehyde
$iv.$Acetophenone
$v.$ Acetaldehyde
$vi.$ Benzophenone
$vii.$ Benzaldehyde

How many of the following tests will give positive result for the above compound?

$i.$Neutral  ${\mathrm{FeCl}}_3$ test

$ii.$ Fehling's test

$iii.$ $2,4-\mathrm{DNP}$ test

$iv.$ Sodium bicarbonates test

$v.$ Carbylamine test

$vi.$ Iodoform test