Q 1 :

Major product formed in the following reaction is a mixture of:                           [2024]

Q 2 :

The major product(P) in the following reaction is                             [2024]

Q 3 :

The major products formed:                                            [2024]

A and B respectively are:

Q 4 :

The ratio of number of oxygen atoms to bromine atoms in the product Q is _____ $\times {10}^{-1}$.              [2024]

Q 5 :

Which one of the following reactions will not lead to the desired ether formation in major proportion?

(iso-Bu ⇒ isobutyl, sec-Bu ⇒ sec-butyl, nPr ⇒ n-propyl, tBu ⇒ tert-butyl, Et ⇒ ethyl)            [2025]

• ${}^t\mathrm{Bu}\stackrel{⊝}{\mathrm{O}}\stackrel{\oplus }{\mathrm{N}}\mathrm{a}+\mathrm{EtBr}\to \mathrm{Bu}-\mathrm{O}-\mathrm{Et}$

   

• 

   

• 

   

• $\mathrm{iso}-\mathrm{Bu}\stackrel{⊝}{\mathrm{O}}\stackrel{\oplus }{\mathrm{N}}\mathrm{a}+\sec -\mathrm{BuBr}\to \sec -\mathrm{Bu}-\mathrm{O}-\mathrm{iso}-\mathrm{Bu}$

   

Q 6 :

Which one of the following, with HBr will give a phenol?                 [2025]

Q 7 :

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:     [2023]

• A is correct but R is not correct

   

• Both A and R are correct but R is NOT the correct explanation of A

   

• A is not correct but R is correct

   

• Both A and R are correct and R is the correct explanation

   

Q 8 :

Suitable reaction condition for preparation of Methyl phenyl ether is             [2023]

• Benzene, MeBr

   

• ${\mathrm{PhO}}^{⊝}{\mathrm{Na}}^{\oplus }$, MeBr

   

• Ph - Br, ${\mathrm{MeO}}^{⊝}{\mathrm{Na}}^{\oplus }$

   

• ${\mathrm{PhO}}^{⊝}{\mathrm{Na}}^{\oplus },$ MeOH