Chapter 10

The reaction on an alkyl halide with RCOOAg produces (a) Ester (b) Aldehyde (c) Ether (d) Ketone

A compound that will produce an offensive smell when heated with chloroform and alcoholic potash is (a) \(\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{2} \mathrm{NH}\) (b) \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}\) (c) \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NH}_{2}\) (d) \(\mathrm{CH}_{3} \mathrm{CN}\)

2 -bromopentane reacts with alcoholic \(\mathrm{KOH}\) to give (a) Cis-2-pentene (b) Trans-2-pentene (c) 1-pentene (d) None of the above

Isopropyl chloride undergoes hydrolysis by (a) \(\mathrm{S}_{\mathrm{N}} 1\) and \(\mathrm{S}_{\mathrm{N}} 2\) mechanisms (b) Neither \(\mathrm{S}_{\mathrm{N}} 1\) nor \(\mathrm{S}_{\mathrm{N}} 2\) mechanisms (c) \(\mathrm{S}_{\mathrm{N}} \mathrm{I}\) mechanism only (d) \(\mathrm{S}_{\mathrm{N}} 2\) mechanism only

Which one of the following is most reactive towards nucleophillic substitution reaction? (a) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Cl}\) (b) \(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{Cl}\) (c) \(\mathrm{ClCH}_{2}-\mathrm{CH}=\mathrm{CH}_{2}\) (d) \(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{Cl}\)

Wurtz reaction involves the reduction of alkyl halide with (a) HI (b) \(\mathrm{Zn} / \mathrm{HCl}\) (c) \(\mathrm{Zn}\) in an inert solvent (d) Na in ether

The end product [B] in the following sequence of reactions is \(\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{KCN}}{\longrightarrow}[\mathrm{A}] \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow} \quad[\mathrm{B}]\) (a) \(\mathrm{HCOOH}\) (b) \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) (c) \(\mathrm{CH}_{3} \mathrm{NH}_{2}\) (d) \(\mathrm{CH}_{3} \mathrm{COOH}\)

\(\mathrm{R}-\mathrm{OH}+\mathrm{HX} \longrightarrow \mathrm{R}-\mathrm{X}+\mathrm{H}_{2} \mathrm{O}\) In the above reaction, the reactivity of different alcohols is (a) Tertiary \(>\) secondary \(>\) primary (b) Tertiary \(>\) secondary \(<\) primary (c) Tertiary \(<\) secondary \(>\) primary (d) Secondary \(<\) primary \(<\) tertiary

Under which of the following conditions would toluene \(\mathrm{C}_{6} \mathrm{H}_{5}-\mathrm{CH}_{3}\), be converted into bromomethyl benzene, \(\mathrm{C}_{6} \mathrm{H}_{5}-\mathrm{CH}_{2} \mathrm{Br} ?\) (a) Reaction with \(\mathrm{Br}_{2}\) in dark (b) Reaction with \(\mathrm{Br}_{2}^{2} / \mathrm{FeBr}_{3}\) (c) Reaction with \(\mathrm{Br}_{2}\) in sunlight (d) Reaction with \(\mathrm{HBr}\)

The number of isomeric alkyl halides possible for \(\mathrm{C}_{5} \mathrm{H}_{11} \mathrm{Cl}\) is (a) 5 (b) 6 (c) 4 (d) 8