Alcohols, Phenols and Ethers

Salicylaldehyde can be prepared from phenol by

• Scholten-Baumann reaction

• Kolbe's reaction

• Reimer-Tiemann reaction

• Perkin reaction

Which among the following phenolic compound is most acidic in nature?

• p-aminophenol

• Phenol

• m-nitrophenol

• p-nitrophenol

Isopropylbenzene is oxidized in the presence of air to compound 'A'. When compound 'A' is treated with dilute mineral acid, the aromatic product formed is

• phenol

• benzene

• benzaldehyde

• acetophenone

Name the catalyst used in commercial method of preparation of phenol.

• Silica

• Calcium phosphate

• Anhydrous aluminium chloride

• Cobalt naphthenate

The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is

• Co(CO)₈

• (Ph₃P)₃RhCl

• [Pt(NH₃)₂Cl₂]

• K[Ag(CN)₂]

Phenol can be converted to o-hydroxybenzaldehyde by

• Kolbe's reaction 

• Reimer-Tiemann reaction 

• Wurtz reaction 

• Cannizaro reaction 

When 3-phenylpropene reacts with HBr in the presence of peroxide, the major product formed is

• 2-bromo 1-phenylpropane

• 1, 2-dibromo 3-phenylpropane

• 3-(o-bromophenyl) propene

• 1-bromo 3-phenylpropane

Reaction of butanone with methylmagnesium bromide following by hydrolysis gives

• 2-methyl-2-butanol

• 2-butanol

• 3-methyl-2-butanol

• 2, 2-dimethyl-1- butanol

The dihalogen derivative 'X' of a hydrocarbon with three carbon atoms reacts with alcoholic KOH and produces another hydrocarbon which forms a red precipitate with ammoniacal Cu₂Cl₂. 'X' gives an aldehyde on reaction with aqueous KOH. The compound 'X' is

• 1,3-dichloropropane

• 1,2-dichloropropane

• 2,2-dichloropropane

• 1,1-dichloropropane

An organic compound 'X with molecular formula, C₇H₈O is insoluble in aqueous NaHCO₃, but dissolves in NaOH. When treated with bromine water 'X' rapidly gives 'Y, C₇H₅OBr₃. The compounds 'X' and 'Y' respectively, are

• benzyl alcohol and 2,4,6-tribromo-3-methoxy benzene

• m-cresol and 2,4,6-tribromo-3-methyl phenol

• benzyl alcohol and 2,4,6-tribromo-3-methyl phenol

• o-cresol and 3,4,5-tribromo-2-methyl phenol