List of top Chemistry Questions on Reaction Mechanisms & Synthesis asked in Joint Entrance Exam

Identify the product in the following reaction :

Identify the correct set of reagents or reaction conditions ‘X’ and ‘Y’ in the following set of transformation.

The number of correct reaction(s) among the following is ________.

Phthalimide is made to undergo following sequence of reactions.

Total number of \( \pi \) bonds present in product 'P' is/are ______

Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH after heating gives $x$ as the major product. The number of $\pi$ bonds in the product $x$ is ................

The shape of carbocation is :

Given below are two statements:
Statement (I) : S$_N$2 reactions are 'stereospecific', indicating that they result in the formation only one stereo-isomers as the product.
Statement (II) : S$_N$1 reactions generally result in formation of product as racemic mixtures.
In the light of the above statements, choose the correct answer from the options given below :

Identify the product A and product B in the following set of reactions.

What is the structure of C ?

Identify major product "X" formed in the following reaction :

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): SN$_2$ reaction of C$_6$H$_5$CH$_2$Br occurs more readily than the SN$_2$ reaction of CH$_3$CH$_2$Br.
Reason (R): The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring.
In the light of the above statements, choose the most appropriate answer from the options given below:

In the following sequence of reaction, the major products B and C respectively are :

The product A formed in the following reaction is:

Which of the following reaction is correct ?

Ionic reactions with organic compounds proceed through:
(A) Homolytic bond cleavage
(B) Heterolytic bond cleavage
(C) Free radical formation
(D) Primary free radical
(E) Secondary free radical
Choose the correct answer from the options given below:

Identify A and B in the following sequence of reaction.