6 questions from 2024
Given below are \( 2 \) statements:Statement I: Nitration of benzene involves the following step:Statement II: Use of Lewis base promotes the electrophilic substitution of benzene.In the light of the above statements, choose the most appropriate answer from the option given below:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): \( \mathrm{S_{N}2} \) reaction of \( \mathrm{C_6H_5CH_2Br} \) occurs more readily than the \( \mathrm{S_{N}2} \) reaction of \( \mathrm{CH_3CH_2Br} \).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:
The correct stability order of the following resonance structures of \( \mathrm{CH_3-CH=CH-CHO} \) is
In the given TLC, the distance of spot A & B are \( 5 \, \text{cm} \) and \( 7 \, \text{cm} \) from the bottom of TLC plate, respectively. \( R_f \) value of B is \( x \times 10^{-1} \) times more than A. The value of \( x \) is
In the following sequence of reaction, the major products B and C respectively are:
Total number of stereo isomers possible for the given structure:
