Chapter 4

Ninhydrin when undergoes hydration, which carbonyl carbon is first attacked by \(\mathrm{H}_{2} \mathrm{O}\) ? (A) 1 (B) 2 (C) 3 (D) None

Total possible R-X involved in following reaction : $$ \mathrm{R}-\mathrm{X} \frac{{ }_{(\mathrm{i})} \mathrm{Mg}}{\text { (ii) } \mathrm{D}_{2} \mathrm{O}} \longrightarrow \mathrm{C} \equiv \mathrm{C}-\mathrm{D} $$ (A) 1 (B) 2 (C) 12 (D) 8

The increasing order of rate of HCN addition to the following compounds is (1) HCHO (2) \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) (3) \(\mathrm{PhCOCH}_{3}\) (4) PhCOPh (A) \(4<2<3<1\) (B) \(4<3<2<1\) (C) \(3<4<2<1\) (D) \(1<2<3<4\)

Which one of the following is reduced with \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) to give the corresponding hydrocarbon? (A) Butan-2-one (B) Acetic acid (C) Acetamide (D) Ethyl acetate

2-Hexyne gives trans -2-Hexene on treatment with (A) \(\mathrm{LiAlH}_{4}\) (B) \(\mathrm{Pt} / \mathrm{H}_{2}\) (C) \(\mathrm{Li} / \mathrm{NH}_{3}\) (D) \(\mathrm{Pd} / \mathrm{BaSO}_{4}\)

The compound formed as a result of oxidation of ethyl benzene by \(\mathrm{KMnO}_{4}\) is (A) Benzophenone (B) Acetophenone (C) Benzoic acid (D) Benzyl alcohol

For balancing the following reaction: (p) \(\mathrm{CH}_{3} \mathrm{CHO}+\) (q) \(\mathrm{HCHO} \stackrel{\text { (i) NaOH }}{\text { (ii) } \mathrm{H}^{\prime}}{\longrightarrow}\) (r) \(\mathrm{C}\left(\mathrm{CH}_{2} \mathrm{OH}\right)_{4}+(\mathrm{s}) \mathrm{HCOOH}\) \(\mathrm{p}, \mathrm{q}, \mathrm{r}, \mathrm{s}\) are respectively: (A) \(2,2,1,1\) (B) \(3,2,1,3\) (C) \(1,4,1,1\) (D) \(1,4,1,0\)

In the given transformation, which of the following is the most appropriate reagent? CC(=O)C=CC1CCC(O)CC1 CCC=CC1CCC(O)CC1 (A) \(\mathrm{NaBH}_{4}\) (B) (i) \(\mathrm{NH}_{2} \mathrm{NH}_{2}\) (ii) \(\stackrel{\ominus}{\mathrm{O}} \mathrm{H}, \Delta\) (C) \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) (D) \(\mathrm{Na}\), Liq. \(\mathrm{NH}_{3}\)

The order of electrophilic substitution reaction in the following compound is (I) Anisole (II) Acetophenone (III) Phenylethanoate (IV) Benzene (A) \(\mathrm{I}>\mathrm{II}>\mathrm{III}>\mathrm{IV}\) (B) \(\mathrm{I}>\mathrm{III}>\mathrm{II}>\mathrm{IV}\) \((\mathrm{C}) \mathrm{I}>\mathrm{III}>\mathrm{IV}>\mathrm{II}\) (D) II > I > IV > III

The reagents which on reaction with CC1CCC(=O)OC1 gives a product which give positive Tollen's test is (A) \(\mathrm{LiAlH}_{4}\) followed by \(\mathrm{H}_{2} \mathrm{O}\) (B) \(\mathrm{NaBH}_{4}\) followed by \(\mathrm{H}_{2} \mathrm{O}\) (C) Na-EtOH followed by \(\mathrm{H}_{2} \mathrm{O}\) (D) DIBAL-H followed by \(\mathrm{H}_{2} \mathrm{O}\)