Alcohols, Phenols and Ethers

The compound from which formic acid cannot be prepared is

• methyl alcohol

• carbon monoxide + NaOH

• glycerol

• methyl magnesium bromide

Following reaction

$({\mathrm{CH}}_3{)}_3\mathrm{CBr} + {\mathrm{H}}_2\mathrm{O} \to ({\mathrm{CH}}_3{)}_3\mathrm{C}-\mathrm{OH} + \mathrm{HBr} \mathrm{is} \mathrm{an} \mathrm{example} \mathrm{of}$

• elimination reaction

• free radical substitution

• nucleophilic substitution

• electrophilic substitution

Which alcohol of molecular formula C₄H₉OH cannot be obtained by the reduction of carbonyl compound ?

• 2-methyl propan-1-ol

• 2-methyl propan-2-ol

• butanol

• butan-2-ol

The number of isomeric ethers with molecular formula C₄H₁₀O is / are

• one

• two

• three

• four

The correct order of boiling point for primary (1 °), secondary (2°) and tertiary (3°) alcohols is

• 1 ° >2° > 3°

• 3° >2° > 1

• 2° > 1 ° > 3°

• 2° >3° > 1

For the sequence of reactions

$\mathrm{A} \stackrel{{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{MgI}}{\to } \mathrm{B} \stackrel{{\mathrm{H}}_2\mathrm{O}/ {\mathrm{H}}^{+}}{\to } \mathrm{ter}-\mathrm{pentyl} \mathrm{alcohol}$

The compound A in the sequence is

• 2-butanone

• acetaldehyde

• acetone

• propanal

The alcohol that produces turbidity immediately with ZnCl₃/conc. HCl at room temperature

• 1-hydroxy butane

• 2-hydroxy butane

• 2-hydroxy-2-methyl propane

• 1-hydroxy-2-methyl propane

Ether and alcohol are ...... isomers.

• chain

• position

• functional

• not isomers

In the following reaction,

$\underset{(\mathrm{in} \mathrm{excess})}{\mathrm{Ethyl} \mathrm{alcohol}} + \underset{(\mathrm{from} {\mathrm{H}}_2{\mathrm{SO}}_4)}{{\mathrm{H}}^{+}} \stackrel{413 \mathrm{K}}{\to } \mathrm{Product}$

the product is

• ethene

• ethyl hydrogen sulphate

• diethyl ether

• acetylene

In Dow's process, the starting raw material is

• phenol

• chlorobenzene

• aniline

• diazobenzene