Problem 40
In sodalime decarboxylation, sodalime is made of ' \(x\) ' \(\mathrm{NaOH}\) and ' \(y^{\prime} \mathrm{CaO}\), then \(x / y\) is (A) \(1 / 3\) (B) \(1 / 1\) (C) \(3 / 1\) (D) \(5 / 1\)
Problem 41
Benzoic acid is more stronger acid than phenol because (A) Benzoate ion is stabilised by two equivalent resonating structures (B) Phenoxide ion has no resonance (C) Negative charge is dispersed on two electronegative oxygen atoms in benzoate ion (D) Both (A) and (C)
Problem 43
The decreasing order of rate of esterification of the following acids with MeOH is (I) \(\mathrm{Me}-\mathrm{CH}_{2} \mathrm{COOH}\) (II) Me \(_{2} \mathrm{CHCOOH}\) (III) \(\mathrm{Me}_{3} \mathrm{C}-\mathrm{COOH}\) (A) \(\mathrm{I}>\mathrm{II}>\mathrm{III}\) (B) III \(>\mathrm{II}>\mathrm{I}\) (C) II \(>\mathrm{III}>\mathrm{I}\) (D) II > I > III
Problem 43
Total number of possible structure of amines of molecular formula \(\mathrm{C}_{4} \mathrm{H}_{11} \mathrm{~N}\), which on reaction with benzene sulphonyl chloride to form a white precipitate that is insoluble in alkali is (A) 1 (B) 2 (C) 3 (D) 4
Problem 44
RDX is obtained by nitration of (A) Glycerol (B) Urotropine (C) Chloroform (D) Acetone
Problem 49
The following conversion can be accomplished by: $$ \mathrm{CH}_{3} \mathrm{CH}=\mathrm{CHCOOH} \longrightarrow \mathrm{CH}_{3} \mathrm{CH}=\mathrm{CHCH}_{2} \mathrm{OH} $$ (A) \(\mathrm{NaBH}_{4}\) (B) \(\mathrm{Al}\left(\mathrm{Me}_{2} \mathrm{CHO}\right)_{3}, \mathrm{Me}_{2} \mathrm{CHOH}\) (C) \(\mathrm{H}_{2}, \mathrm{Ni}\) (D) \(\mathrm{LiAlH}_{4}\)
Problem 50
Ethyl acetate is treated with excess of methyl magnesium iodide in dry ether. The reaction mixture is then treated with water. The organic products obtained are
Problem 54
During reaction of \(\alpha\)-diazo carbonyl compound \([\mathrm{R}\) \(\left(\mathrm{R}-\mathrm{C}-\mathrm{CH}_{2} \mathrm{~N}_{2}\right)\) with \(\mathrm{Ag}_{2} \mathrm{O}\), product obtained and reaction is respectively: (A) \(\mathrm{R}-\mathrm{N}=\mathrm{C}=\mathrm{O}\) Wolf rearrangement (B) \(\mathrm{R}-\mathrm{CH}=\mathrm{C}=\mathrm{O}\) Wolf Kishner reduction (C) \(\mathrm{R}-\mathrm{CH}=\mathrm{C}=\mathrm{O} \quad\) Wolf rearrangement (D) \(\mathrm{R}-\mathrm{CH}=\mathrm{C}=\mathrm{NH} \quad\) Wolf rearrangement
Problem 57
Identify the unknowns in the following reaction sequence. $$ \underset{\text { (Hydrocarbon) }}{\mathrm{P}} \stackrel{\mathrm{Na} / \mathrm{liq} \mathrm{NH}_{3}}{\longrightarrow} \mathrm{Q} \stackrel{\mathrm{O}_{3}}{\mathrm{H}_{2} \mathrm{O}}{\longrightarrow} 2 \mathrm{R} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{CH}_{3} \mathrm{COOH}+2 \mathrm{CO}_{2} $$
Problem 58
The correct statement(s) regarding final major product ' \(\mathrm{R}\) ' of the following reaction sequence is/are: (A) Can give yellow ppt. with \(\mathrm{NaOI}\) (B) Cannot reduce \(\mathrm{H}_{5} \mathrm{IO}_{6}\) (C) Exist in enol form (D) Michael reaction is used for its formation
