⇒ Halogen Derivatives

16. ⇒  (MHT CET 2021 21th September Morning Shift )

Identify reactant (A) used in the following conversion.

Chlorobenzene $+\mathrm{A}\underset{{\mathrm{AlCl}}_3}{\stackrel{\text{ anhydrous }}{⟶}}1-$ Chloroacetophenone $+4-$ Chloroacetophenone

A. Ethyl acetate

B. Acetophenone

C. Acetic acid

D. Acetyl chloride

17. ⇒  (MHT CET 2021 20th September Evening Shift )

Identify '$\mathrm{A}$' in the following reaction.

$A\stackrel{\text{ Na/dry ether }}{⟶}$ 3,4-diethyl-3,4-dimethylhexane $+2\mathrm{NaCl}$

A. 3-Chloro-3-methylpentane

B. 3-Chloro-2-methylpentane

C. 2-Chloro-3-methylpentane

D. 2-Chioro-2-methylpentane

18. ⇒  (MHT CET 2021 20th September Evening Shift )

How many molecules of methyl iodide are required to obtain tetramethyl ammonium iodide from dimethyl amine?

A. 1

B. 3

C. 2

D. 4

19. ⇒  (MHT CET 2021 20th September Morning Shift )

Which among the following is NOT correct statement about ${\mathrm{S}}_{\mathrm{N}}1$ reaction?

A. A more powerful nucleophile favours ${\mathrm{S}}_{\mathrm{N}}1$ mechanism.

B. ${\mathrm{S}}_{\mathrm{N}}1$ reaction proceeds via formation of carbocation intermediate.

C. ${\mathrm{S}}_{\mathrm{N}}1$ reaction proceeds more rapidly in polar protic solvent.

D. The rate of ${\mathrm{S}}_{\mathrm{N}}1$ mechanism is independent of the nature of nucleophile.