Chemical Reactions of Phenol

When sodium phenoxide is heated with carbon dioxide under pressure, sodium salicylate is obtained as major product. This on acidification given salicylic acid. This reaction is known as

​The electrophile involved in the above reaction is

​The electrophile involved in the above reaction is

The structure of the compound that gives a tribromo derivative on treatment with bromine water is –

The structure of the compound that gives a tribromo derivative on treatment with bromine water is

p-cresol reacts with chloroform in alkaline medium to give the compound $\mathrm{A}$ which adds hydrogen cyanide to form the compound$\mathrm{B}$ . The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is –

The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is –

The hydrogenation of phenol in the presence of nickel and heat gives

The catalytic hydrogenation of phenol gives cyclohexanol.

The catalytic hydrogenation of phenol gives _____.

Describe catalytic hydrogenation of phenol.

In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Phenols give $\mathrm{o}-$ and $\mathrm{p}-$nitrophenol on nitration with conc. ${\mathrm{HNO}}_3$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$ mixture.
Reason : $—\mathrm{OH}$ group in phenol is $\mathrm{o}–, \mathrm{p}–$ directing.

Assertion : Phenol is more reactive than benzene towards electrophilic substitution reaction.
Reason : In the case of phenol, the intermediate arenium ion is more stabilized by resonance.

Assertion: Phenol is more acidic than ethanol.
Reason: Phenoxide ion is resonance stabilized.

When phenol is treated with bromine water, the white precipitate formed is $\_\_\_$

The major product of the following reaction sequence is:

The acid which contains both -OH and -COOH groups is

Which the following is the least acidic?

Which of the following functional group is formed when Phenol is made to react with Chloroform in the presence of dilute Sodium hydroxide?