NEET Chemistry Questions: Halkoarenes & Haloarenes

Addition of Br₂ on cis-butene-2 gives:

In ${\mathrm{S}}_{{\mathrm{N}}^2}$ reactions, the correct order of reactivity for the following compounds : ${\mathrm{CH}}_3\mathrm{Cl}$, ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Cl}$, ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CHCl}$ and ${\left({\mathrm{CH}}_3\right)}_3\mathrm{CCl}$ is :

X $\stackrel{{\mathrm{Cl}}_2}{\to }$ Benzotrichloride $\stackrel{\mathrm{Hydrolysis}}{\to }$ Y

X and Y respectievely are:

Benzene on reaction with a mixture of HNO₃ and H₂SO₄ followed by reaction of Cl₂/FeCl₃ gives:

In the following sequences of reactions;

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{I}\stackrel{\mathrm{KOH}(\mathrm{alc}.)}{\to }$(A)$\stackrel{{\mathrm{Br}}_2}{\to }$(B)$\stackrel{{\mathrm{NaNH}}_2/{\mathrm{NH}}_3}{\to }$(C)

the end product (C) is:

Friedel-Craft's reaction of bromobenzene with methyl iodide gives:

Benzyl chloride (C₆H₅CH₂Cl) can be prepared from toluene by chlorination with:

Elimination of HBr from 2-bromobutane results in the formation of:

(CH₃)₃CMgCl on reaction with D₂O gives:

Benzoyl Chloride is prepared from benzoic acid by:

In the following sequences of reactions;

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}\stackrel{\mathrm{KOH}(\mathrm{alc}.)}{\to }$(A)$\stackrel{\mathrm{HBr}}{\to }$(B)$\stackrel{\mathrm{KOH}\left(\mathrm{aq}\right)}{\to }$ (C)

the product (C) is:

Iodoform can be prepared from all except :

The alkyl halide which does not give white precipitate with alcoholic ${\mathrm{AgNO}}_3$solution is:

The reaction of toluene with ${\mathrm{Cl}}_2$ in presence of ${\mathrm{FeCl}}_3$ gives predominantly :

The products of reaction of alcoholic silver nitrite with ethyl bromide are :