Chapter 22

An equimolar mixture of methyl iodide and ethyl iodide is heated with sodium in dry ether. The number of possible alkane products is (a) One (b) Two (c) Three (d) Four

Butanenitrile may be prepared by heating (a) \(n\)-propyl alcohol with \(\mathrm{KCN}\) (b) \(n\)-butyl alcohol with \(\mathrm{KCN}\) (c) \(n\)-butyl chloride with \(\mathrm{KCN}\) (d) \(n\)-propyl chloride with \(\mathrm{KCN}\)

Each of the following compound gives a white precipitate with boiled alcoholic silver nitrate except (a) vinyl chloride (b) methyl chloride (c) benzyl chloride (d) allyl chloride

\(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CMgCl}\) on reaction with \(\mathrm{D}_{2} \mathrm{O}\) gives (a) \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CD}\) (b) \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COD}\) (c) \(\left(\mathrm{CD}_{3}\right)_{3} \mathrm{CD}\) (d) \(\left(\mathrm{CD}_{3}\right)_{3} \mathrm{OD}\)

The smallest alkyl bromide which can show optical isomerism is (a) isopropyl bromide (b) isobutyl bromide (c) \(s\)-butyl bromide (d) \(l\)-butyl bromide

Which compound converts chloroform to a tear gas ? (a) acetone (b) nitric acid (c) nitrous acid (d) acetaldehyde

Which of the following alkyl halides is most reactive towards formation of grignard reagent? (a) ethyl bromide (b) ethyl chloride (c) ethyl iodide (d) ethyl iodide

Phenol is heated with \(\mathrm{CCl}_{4}\) and aqueous \(\mathrm{NaOH}\) and finally acidified. The major product formed is (a) 2 -hydroxybenzoic acid (b) 2 -hydroxybenzaldehyde (c) 4 -hydroxybenzaldehyde (d) 4 -hydroxybenzoic acid

In their nucleophilic substitution reactions, aryl halide resembles (a) vinyl chloride (b) allyl chloride (c) benzyl chloride (d) ethyl chloride

Which of the following ions is the worst leaving group ? (a) bromide (b) chloride (c) iodide (d) fluoride

The best reagent for the synthesis of propanoie acid from 2-butanone is (a) \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} / \mathrm{H}_{2} \mathrm{SO}_{4}\) (b) \(\mathrm{KMnO}_{4} / \mathrm{NaO} \|\) (c) \(\mathrm{AgNO}_{1} / \mathrm{H}_{3} \mathrm{O}\) (d) Is / NaOH

How will you convert butan-2-one to propanoic acid? (a) Tollen's reagent (b) Fehling's solution (c) \(\mathrm{NaOH} / \mathrm{I}_{2} \mathrm{H}^{+}\) (d) \(\mathrm{NaOH} / \mathrm{Nal} / \mathrm{H}^{+}\)

Bottles containing \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}\) and \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{C}\) lost their original labels. They were labeled \(A\) and \(\mathbf{B}\) for testing, \(A\) and \(B\) were separately taken in test tubes and boiled with \(\mathrm{NaOH}\) solution. The end solution in each tube was made acidic with dilute \(HNO_{3}\) solution added. Solution \(B\) gave a yellow precipitate. Which one of the following statements is true for the experiment ? (a) Addition of \(\mathrm{HNO}_{3}\) was unnecessary (b) \(\mathrm{A}\) was \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}\) (c) \(A\) was \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} I\) (d) \(B\) was \(C_{6} H_{5} l\)

Which of the following reacts with water ? (a) \(\mathrm{CHCl}_{3}\) (b) \(\mathrm{Cl}_{3} \mathrm{CCHO}\) (c) \(\mathrm{CCl}_{4}\) (d) \(\mathrm{ClCH}_{2} \mathrm{CH}_{2} \mathrm{Cl}\)

On monochlorination of 2-methyl butane the total number of chiral compounds is (a) 2 (b) 4 (c) 6 (d) 8

The number of possible enantiomeric pairs that can be produced during monochlorination of 2 -methylbutane is (a) 2 (b) 3 (c) 4 (d) 1

Tertiary alkyl halides are practically inert to substitution by \(\mathrm{S}_{\mathrm{N}} 2\) mechanism because of (a) Insolubility (b) Instability (c) Inductive effect (d) Steric hindrance

In the chemical reaction, \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}+\mathrm{CHCl}_{3}+3 \mathrm{KOH} \rightarrow \mathrm{A}+\mathrm{B}+3 \mathrm{H}_{2} \mathrm{O}\) The compounds \(\mathrm{A}\) and \(\mathrm{B}\) are respectively (a) \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NC}\) and \(\mathrm{KCl}\) (b) \(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{CN}\) and \(3 \mathrm{KCl}\) (c) \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\) and \(3 \mathrm{KCl}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NC}\) and \(\mathrm{K}_{2} \mathrm{CO}_{3}\)

The order of reactivity of alkyl halides towards elimination reaction is (a) \(3^{\circ}>2^{\circ}>1^{\circ}\) (b) \(2^{\circ}>1^{0}>3^{\circ}\) (c) \(3^{\circ}>1^{\circ}>2^{\circ}\) (d) \(1^{\circ}>2^{\circ}>3^{\circ}\)

Which of the following compounds undergoes the slowest addition of \(\mathrm{HCl}\) ? (a) ethene (b) propene (c) 2 -methoxy propene (d) but-2-ene

Which of the following organic reactions takes place by Carbene mechanism ? (a) Friedel Craft reaction (b) Peroxide effect (c) Reimer Tieman reaction (d) Borodine Hunsdiecker reaction

Which of the following organic reactions requires the presence of acetone ? (a) Borodine Hunsdiecker Reaction (b) Conant Finkelstein Reaction (c) Birnbaum Simonini Reaction (d) Reimer Tieman Reaction