Chapter 16

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{CS}_{2}\) HgCl \(_{2}, \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NCS}+\mathrm{HgS}+2 \mathrm{HCl}\) the abovereaction is: [AIIMS 19\$\\} (a) Libermann's nitroso reaction (b) Carbylamine reaction (c) Hinsberg's reaction (d) Hofmann mustard oil reaction

\(\mathrm{C}_{6} \mathrm{H}_{6}+\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{A} \mid \mathrm{Cl}_{3}}{\longrightarrow} \mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CH}_{3}+\mathrm{HCl}\) The above reaction is: |AIIMS 1998] (a) Wurtz-Fittig reaction (b) Grignard reaction (c) Friedel-Crafts reaction (d) Ullmann reaction

Benzene diazonium chloride reacts with hypophosphorous acid to produce: (a) phenol (b) benzene (c) \(p\)-hydroxyazobenzene (d) bengonitrile

Benzaldehyde can be prepared by the hy drolysis of: |Al (a) benzonitrile (b) benzotrichloride (c) benzyl chloride (d) benzal chloride

The product obtained by treating benzene with chlorine in presence of ultraviolet light: \(\quad\) |A.1IMS 19s9| (a) \(\mathrm{CCl}_{4}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{Cl}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{6} \mathrm{Cl}_{6}\) (d) \(\mathrm{C}_{6} \mathrm{Cl}_{6}\)

Picric acid is: (a) trinitrophenol (b) trinitrotoluene (c) trinitrobenzene (d) tribromobenzene

Salol is: (a) acetyl salicylie acid (b) phenyl salicylate (c) methyl salicylate (d) none of these

In Sandmeyer's reaction the salt involved is: (a) diazonium salt (b) cuprammonium salt (c) ferrous salt (d) ammonium salt

Which of the following compounds possesses the \(\mathrm{C}-\mathrm{H}\) bond with the lowest bond dissociation energy? |AIIMS 2003] (a) Toluene (b) Benzene (c) \(n\)-Pentane (d) 2.2-Dimethyl propane

The ortholpara directing group among the following is: |A11MS 2003] (a) \(\mathrm{COOH}\) (b) \(\mathrm{CN}\) (c) \(\mathrm{COCH}_{3}\) (d) \(\mathrm{NHCOCH}_{3}\)

The treatment of benzene with isobatene in the presence of sulphuric acid gives: [AIIMS 2003] (a) isobutyl benzene (b) terf-butyl benzene (c) \(n\)-butyl benzene (d) no reaction

Nitrobenzene gives N-phenylhydroxylamine by reduction with: [AlIMS 2003] (a) \(\mathrm{Sn} / \mathrm{HCl}\) (b) \(\mathrm{H}_{2} / \mathrm{Pd}-\mathrm{C}\) (c) \(\mathrm{Zn} / \mathrm{NaOH}\) (d) \(\mathrm{Zn} / \mathrm{NH}_{4} \mathrm{Cl}\)

Among the following, the one which reacts most readily with ethanol is: [AI1MA 2004] (a) \(p\)-nitrobenzyl bromide (b) \(p\)-chlorobenzyl bromide (c) \(p\)-methoxybenzyl bromide (d) \(p\)-methylbenzyl bromide

Aromatic nitriles (ArCN) are not prepared by reaction: |AIIMS 2004] (a) \(\mathrm{Ar} X+\mathrm{KCN}\) (b) \(\mathrm{ArN}_{2}^{*}+\mathrm{CuCN}\) (c) \(\mathrm{ArCONH}_{3}+\mathrm{P}_{2} \mathrm{O}_{5}\) (d) \(\mathrm{ArCONH}_{2}+\mathrm{SOCl}_{2}\)

The functional group present in cresol is: [BHU 1996] (a) alcoholic - OH (b) phenolic \(-\mathrm{OH}\) (c) carbonyl \(>\mathrm{C}=\mathrm{O}\) (d) carboxylic \(-\mathrm{COOH}\)

Which one of the following statements is correct? (a) phenol is more acidic than carbonic acid (b) phenol is less acidic than ethyl alcohol (c) phenol is more acidic than ethanol (d) phenol is more acidic than acetic acid

Benzaldehyde and alcohol KCN reacts to produce: (a) ethyl benzoate (b) benzyl alcohol (c) benzoin (d) benzyl benzoate

Nitrobenzene and hydrogen in presence of zinc combines to form: |BHU 1999] (a) azobenzene (b) bertene (c) azoxybenzene (d) aniline

Phenol is more acidic than alcohol because: (a) phenol is more soluble in polar solvents (b) alcohol does not lose hydrogen atom (c) phenoxide ion is stabilised by resonance (d) phenoxide ion does not exhibit resonance

Chemically aspirin is known as: (a) salicylic acid (b) salicyaldehyde (c) 2 -acetoxybenzoic acid (d) phenyl salicylate

In benzene molecule carbon atoms are inclined at an angle of: |BHU 2000] (a) \(60^{\circ}\) (b) \(109^{\circ}, 28\) (c) \(120^{\circ}\) (d) \(180^{\circ}\)

Phenol reacts with excess of bromine water to produce: (a) \(o\)-bromophenol (b) \(p\)-bromophenol (c) \(2,4,6\)-tribromophenol (d) mixture of \(o\) - and \(p\)-bromophenol

Methyl phenyl ether on heating with Hi proubee: (a) methyl alcohol and phenyl ether (b) methyl iodide and phenol (c) methyl iodide and phenyl iodide (d) benzyl alcohol and methane

Phenol and benzoic acid are distinguished by: (a) \(\mathrm{NaOH}\) (b) \(\mathrm{NaHCO}_{3}\) (c) \(\mathrm{Na}_{7} \mathrm{CO}_{3}\) (d) \(\mathrm{H}_{2} \mathrm{SO}_{4}\)

In Perkin reaction what is formed? (a) Picric acid (b) Cinnamic acid (c) Butanoic acid (d) Benzoic acid

Which of the following oil is obtained from benzene after fractional distillation of coal tar? [BHU 2004] (a) Light oil (b) Heavy oil (c) Middle oil (d) Anthracene oil

Azo dyes are prepared from: (a) benzene (b) aniline (c) benzaldehyde (d) benzoic acid

Phenol can be conveted into salicylaldehyde by: |BHU 2004] (a) Etard reaction (b) Perkin reaction (c) Cannizzaro reaction (d) Reimer-Tiemann reaction

Toluene is oxidised to benzoic acid by: (a) \(\mathrm{MnO}_{4}^{-} / \mathrm{OH}^{-}\) (b) \(\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} / \mathrm{H}^{+}\) (c) \(\mathrm{H}_{7} \mathrm{SO}_{4}\) (d) both (a) and (b)

Which of the following is the most stable compound? [BHU 204] (a) \(\mathrm{Ph}_{3} \mathrm{C}\) (b) \(\mathrm{Ph}_{2} \mathrm{CH}\) (c) \(\mathrm{Ph}_{2} \mathrm{CH}_{2}\) (d) \(\mathrm{Ph} \stackrel{+}{\mathrm{CH}}_{2}\)

Reaction of phenol with \(\mathrm{CCl}_{4}\) and \(\mathrm{NaOH}\) followed by hydrolysis is likely to give: |AMU 1997] (a) Oc1ccccc1Cl (b) O=Cc1cccc(O)c1O (c) O=Cc1ccccc1O (d) O=C(O)c1ccccc1O

Benzyl alcohol is obtained from benzaldehyde by: \(\quad\) [AMU 2001] (a) Fittig reaction (b) reduction with LiAlH \(_{4}\) (c) Cannizzarp's reaction (d) both (b) and (c)

Benzoic acid with \(\mathrm{Ba}(\mathrm{OH})_{h}\) gives: (a) barium benzoate (b) benzaldehyde (c) benzene (d) toluene

Which is obtained on treating phenol, with dilute \(\mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}\) mixture? [AMU 2004] (a) O=[N+]([O-])c1cccc(O)c1 (b) O=[N+]([O-])c1ccccc1O (c) O=[N+]([O-])c1cc([N+](=O)[O-])c(O)c([N+](=O)[O-])c1 (d) none of these

The reaction \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{NH}_{2}+\mathrm{ClCOC}_{6} \mathrm{H}_{5} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NHCOC}_{6} \mathrm{H}_{5}\) is [HR (PMT) 1995] called: \(\quad\) (b) Schotten-Baumann reaction (a) Hinsberg reaction \(\begin{array}{ll}\text { (c) Friedel-Crafts reaction } & \text { (d) Claisen condensation }\end{array}\)

Write the IUPAC name of aspirin: (a) 2-acetoxy benzoic acid (b) phenyl ethanone (c) benzophenone (d) none of these

Aniline is insoluble in water and possessess high vapour pressure. It can be purified by method: (a) simple distillation (b) fractional distillation (c) vacuum distillation (d) steam distillation

The electrolytie reduction of nitrobenzene in acidic medium gives: [HR (PMT) 1995] (a) \(N\)-phenyl hydroxyl amine (b) anobenzene (c) \(p\)-amino phenal (d) aniline

DDT is obtained when chlorobenzene reacts with: [HR (PMT) \(1996 \mid\) (a) acetaldehyde (b) acetone (c) chloral (d) phenol

When benzoic acid reacts with conc. \(\mathrm{HNO}_{3}\) and \(\mathrm{H}_{2} \mathrm{SO}_{4}\) the product is ........... [HR (PMT) 1997] (a) 2,4 -dinitrobenzoic acid (b) 3-nitrobenzoic acid (c) 1-3-dinitrobenzoic acid (d) 2-nitrobenzoic acid

Identify the produet \((Z)\) formed \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl} \stackrel{\mathrm{H}_{3} \mathrm{PO}_{2}}{\longrightarrow} Z\) (a) \(\mathrm{C}_{6} \mathrm{H}_{6}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{OH}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{Cl}\) (d) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CH}_{2} \mathrm{OH}\)

Aspirin is common name for. [HR (PMT) 19: (a) phenyl salicylate (b) nitro salicylate (c) methyl salicylate (d) acetyl salicylic acid

Methanal and phenol react in presence of acid to give: (a) bakelite (b) polyethylene (c) dacron (d) nylon-66

The best method to separate the mixture of ortho and para nitrophenol \((1: 1)\) is: (a) vaporisation (b) colour spectrum (c) distillation (d) crystallisation

The reaction \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CHO}+\mathrm{CH}_{3} \mathrm{CHO} \longrightarrow\) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}=\mathrm{CHCHO}\) is ealled: (a) Benzoin condensation (b) Claisen condensation (c) Cannizaro's reaction (d) Perkin reaction

Which of the following can be sulphonated most easily? [HR (PMT) 2002] (a) Benzene (b) Toluene (c) Nitrobenzene (d) Chlorobenzene

Benzene diazonium chloride on treatment with hypophosphorus acid and water in presence of \(\mathrm{Cu}^{+}\)eatalyst produces: (a) benzene (b) toluene (c) aniline (d) chlorobenzene

Which of the following cannot be nitrated directly? (a) Aniline (b) Phenol (c) Toluene (d) Benzoic acid

Which of the following is the strongest acid? [HR (PMT) 2003] (a) \(o\)-Nitro benzoic acid (b) \(m\) - Nitro benzoic acid (c) \(\mathrm{m}\)-Chloro benzoic acid (d) \(m\)-Cyano benzoic acid

The phenol or phenoxide is not formed by: (a) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Cl}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{SO}_{3} \mathrm{Na}\) (d) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{COOH}\)