Chapter 16

Toluene on oxidation with chromyl chloride gives: |DPMT 2002| (a) benaoic acid (b) benzaldchyde (c) benzoyl chloride (d) chlorobenzene

For nitration in benzene, we require: (a) conc. \(\mathrm{HNO}_{3}+\) conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) (b) conc. \(\mathrm{HNO}_{3}\) (c) conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}+\) fuming \(\mathrm{HNO}_{3}\) (d) \(\mathrm{KNO}_{2}\)

\(p-\) Nitrophenol and \(o\)-nitropbenol are separated by: [DPMT 2103] (a) crystallization (b) fractional crystallization (c) distillation (d) steam distillation

The chief source of aromatic hydrocarbon is: (a) petroleum (b) coal tar (c) kerosene (d) natural gas

Which one of the following acid does not form hydrocarbon with sodalime? (a) Cinnamic acid (b) Benzoic acid (c) Picric acid (d) Isophthalic acid

Which of the following species participates in sulphonation of benzene ring? |CPMT 1999] (a) \(\mathrm{SO}_{2}^{-}\) (b) \(\mathrm{SO}_{3}\) (c) \(\mathrm{HSO}_{3}^{-}\) (d) \(\mathrm{H}_{2} \mathrm{SO}_{4}\)

Nitrobenaene on heating with a mixture of conc. \(\mathrm{HNO}_{3}\) and cons. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) produces: (a) \(m\)-nitrobenzene (b) \(m\)-dinitrobenzene (c) \(p\)-dinitrobenzene (d) \(o\)-dinitrobenzene

Benzene on oxidation with \(\mathrm{V}_{2} \mathrm{O}_{5}\) produces: [CPMT 2001| (a) toluene (b) benzaldehyde (c) maleic anhydride (d) benzophenone

Aniline reacts with chloroform in presence of alcoholic KOH 0 produce bad smelling compound. The compound produced is: (a) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NC}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{Cl}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CN}\) (d) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NHC}_{6} \mathrm{H}_{5}\)

Which reaction is used for the preparation of acetophenone? (a) Reimer-Tiemann reaction ICPMT 200. (b) Wurtz-Fittig reaction (c) Friedel-Crafts reaction (d) Cannizzaro's reaction

The clectrophile involved in the nitration of bensene is: |CHMT 2004| (a) \(\mathrm{NO}_{2}\) (b) \(\mathrm{NO}_{2}^{*}\) (c) NO (d) \(\mathrm{NO}_{2}^{;}\)

The reagent used in Gatterman-Koch aldehyde synthesis is: |CHMT 2004| (a) \(\mathrm{Pd} / \mathrm{BaSO}_{4}\) (b) alkaline \(\mathrm{K} \mathrm{MnO}_{4}\) (c) acidic \(\mathrm{KM} \mathrm{NO}_{4}\) (d) \(\mathrm{CO}+\mathrm{HCl}\)

Phenol on reaction with \(\mathrm{Br}_{2}\) gives: |ClMT 2005| (a) a-bromo phenol (b) \(p\)-bromo phenol (c) \(2,4,6\) tribromo phenol (d) 1.3.5 tribromo bennene

Aniline with \(\mathrm{CHCl}_{3}\) and \(\mathrm{KO} 11\) on heating gives: (a) phenyl isocyanide (b) phenyl cyanide (c) phenol (d) salicylic acid