Alcohols, Phenols and Ethers

The increasing order of \(\mathrm{pK_a}\) for the following phenols is
(A) 2, 4 - Dinitrophenol
(B) 4 - Nitrophenol
(C) 2, 4, 5 - Trimethylphenol
(D) Phenol
(E) 3-Chlorophenol
Choose the correct answer from the option given below :

The denticity of the ligand present in the Fehling's reagent is ___________.

Find out the major product for the following reaction.

A solution of \(\mathrm{Cr O_5}\) in amyl alcohol has a __________ colour.

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Acetal / Ketal is stable in basic medium.
Reason R : The high leaving tendency of alkoxide ion gives the stability to acet...

In the cumene to phenol preparation in presence of air, the intermediate is

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life.
Reason R : Butylated hydroxy anisole is more reactiv...

Find out the major product from the following reaction.

'A' and 'B' formed in the following set of reactions are :

Decreasing order of dehydration of the following alcohols is

Identify the incorrect option from the following

The graph which represents the following reaction is :

'A' formed in the above reaction is

2-Methyl propyl bromide reacts with \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{O}^{-}\) and gives 'A' whereas on reaction with \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\) it gives 'B'. The mechanism followed in these reactions and the produc...

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Order of acidic nature of the following compounds is A > B > C.

Reason R : Fluoro is a stronger electron withdrawing group ...

The major product for the following reaction is:

Correct statements for the given reaction are :

A. Compound '\(\mathrm{B}\)' is aromatic
B. The completion of above reaction is very slow
C. 'A' shows tautomerism
D. The bond lengths of C-C in compound $B$ are found to be same
Choose the c...

The ratio x/y on completion of the above reaction is __________.

The number of hyperconjugation structures involved to stabilize carbocation formed in the above reaction is _________.

Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction

Product [X] formed in the above reaction is :

Compound 'B' is

Suitable reaction condition for preparation of Methyl phenyl ether is

Incorrect method of preparation for alcohols from the following is:

The correct order for acidity of the following hydroxyl compound is :
A. \(\mathrm{CH}_{3} \mathrm{OH}\)
B. \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COH}\)
C.
D.
E.
Choose the correct answer from the options given below:

Consider the above reaction sequence. Identify the component A and component B :

Given below are two statements :
Statement I : Phenols are weakly acidic.
Statement II : Therefore they are freely soluble in NaOH solution and are weaker acids than alcohols and water.
Choose the most appropriate option :

In the given reaction,

the number of sp2 hybridised carbon(s) in compound 'X' is ________.

The number of chiral alcohol(s) with molecular formula C4H10O is ________.

A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3 solution. Compound 'X' also gives violet colour with neutral FeCl3 solution. The compound 'X' is :

When ethanol is heated with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\), a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is

The major product (P) of the given reaction is
(where, Me is \(-\)CH3)

Identify the major products A and B for the below given reaction sequence.

Choose the correct option for the following reactions.

Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.

Match List-I with List-II.

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In the following reaction

The \(\%\) yield for reaction I is \(60 \%\) and that of reaction II is \(50 \%\). The overall yield of the complete reaction is __________ \(\%\). [nearest integer]

In the above reaction product B is :

Compound 'P' on nitration with dil. HNO3 yields two isomers (A) and (B). These isomers can be separated by steam distillation. Isomers (A) and (B) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on rea...

Consider the above reaction sequence and identify the product B.

The major product of the following reaction is

Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide \((\mathrm{PhMgBr})\) followed by acidic hydrolysis?

The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to :

Hydrolysis of which compound will give carbolic acid?

In the following reaction :

The compounds A and B respectively are :

The intermediate X, in the reaction :

The major product formed in the following reaction, is

In the given reaction

'A' can be

Given below are two statements :
Statement I : On heating with \(\mathrm{KHSO}_{4}\), glycerol is dehydrated and acrolein is formed.
Statement II : Acrolein has fruity odour and can be used to test glycerol's presence.
Choose the correct op...

Most stable product of the following reaction is: