The correct order of ${\mathrm{pK}}_{\mathrm{a}}$ values for the following compounds is:

A solution of $$\mathrm{Cr}{\mathrm{O}}_5$$ in amyl alcohol has a __________ colour.

Find out the major product for the following reaction.

The increasing order of $$\mathrm{p}{\mathrm{K}}_{\mathrm{a}}$$ 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 :

Find out the major product from the following reaction.

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 reactive towards oxygen than food. In the light of the above statements, choose the most appropriate answer from the options given below

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 : Acetal / Ketal is stable in basic medium. Reason R : The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium. In the light of the above statements, choose the correct answer from the options given below :

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

'A' formed in the above reaction is

The major product for the following reaction is:

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 than Chloro group. In the light of the above statements, choose the correct answer from the options given below:

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 products 'A' and 'B' respectively are :

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 correct answer from the options given below:

Compound 'B' is

Product [X] formed in the above reaction is :

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

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:

Incorrect method of preparation for alcohols from the following is:

Suitable reaction condition for preparation of Methyl phenyl ether is