MEDIUM
Earn 100

Describe catalytic hydrogenation of phenol.

Important Questions on Alcohols, Phenols and Ethers

HARD

The major product of the following reaction is:

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HARD

The increasing order of the pKa values of the following compounds is:
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MEDIUM
Arrange the following compounds in order of decreasing acidity :
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HARD

The major product(s) of the following reaction is/are:

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MEDIUM

Assertion(A):-OH group of phenol is ortho, para directing in electrophilic substitutions

Reason (R):-OH group stabilises the arenium ion formed by the ortho, para attack of the electrophile

The correct answer is

HARD

In the following reaction, the product(s) formed is/are:

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MEDIUM

The functional group which is formed when Phenol is made to react with Chloroform in the presence of dilute Sodium hydroxide

EASY
Which one of the following substituents at para-position is most effective in stabilizing the phenoxide Question Image ion ?
HARD
An organic compound A of molecular formula C6H6O gives violet colour with neutral ferric chloride solution. Compound A when heated with zinc dust gives a hydrocarbon B.  Also compound A reacts with phthalic anhydride and concentrated sulphuric acid to give compound C of molecular formula C20H14O4. Identify A, B and C. Explain the reactions.
MEDIUM
A compound that undergoes bromination easily is:
MEDIUM
Which one of the following is the most acidic compound?
HARD

What is the product "C" after following reactions -

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MEDIUM
The acid which contains both -OH and -COOH groups is
MEDIUM
Which of the following compounds will not be soluble in sodium bicarbonate?
HARD
Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br2 to form product B. A and B are respectively
HARD
Phenol on treatment with CO2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with CH3CO2O in the presence of catalytic amount of H2SO4 produces:
HARD

What is Z in the following sequence of reactions?
PhenolZn dustXCH3Cl/Anhydrous AlCl3YAlkaline KMnO4Z

EASY

The major product P formed in the following reaction is

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HARD
An organic compound with molecular formula C7H8O dissolves in NaOH and gives a characteristic colour with FeCl3. On treatment with bromine, it gives a tribromo derivative C7H5OBr3. The compound is