MCQ
Phosphine may be produced by adding water to
- ✓$Ca_3P_2$
- B$P_4O_6$
- C$P_4O_{11}$
- D$HPO_3$
$Ca _3 P _2+6 H _2 O \rightarrow 3 Ca ( OH )_2+2 P H _3$
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Given : Atomic masses of $C , H$ and $N$ are $12,1$ and $14\, amu$ respectively.
The molar mass of the compound $A$ is $162\, g\, mol ^{-1}$.
Statement $I$: Aniline reacts with con. $\mathrm{H}_2 \mathrm{SO}_4$ followed by heating at $453-473 \mathrm{~K}$ gives $\mathrm{p}$ aminobenzene sulphonic acid, which gives blood red colour in the 'Lassaigne's test'.
Statement $II$: In Friedel - Craft's alkylation and acylation reactions, aniline forms salt with the $\mathrm{AlCl}_3$ catalyst. Due to this, nitrogen of aniline aquires a positive charge and acts as deactivating group.
In the light of the above statements, choose the correct answer from the options given below :