Question

Identify the reagent(s) '$\mathrm{A}$' and condition(s) for the reaction :

JEE Main 2021 (16 Mar Shift 2)

Options

• A: $\mathrm{A}=\mathrm{HCl}$; Anhydrous ${\mathrm{AlCl}}_3$
• B: $\mathrm{A}=\mathrm{HCl},{\mathrm{ZnCl}}_2$
• C: $\mathrm{A}={\mathrm{Cl}}_2$; $\mathrm{UV}$ light
• D: $\mathrm{A}={\mathrm{Cl}}_2$; dark, Anhydrous ${\mathrm{AlCl}}_3$

Question

Reaction of Grignard reagent, ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{MgBr}$ with ${\mathrm{C}}_8{\mathrm{H}}_8\mathrm{O}$ followed by hydrolysis gives compound $\mathrm{A}$, which reacts instantly with Lucas reagent to give compound $\mathrm{B}\left({\mathrm{C}}_{10}{\mathrm{H}}_{13}\mathrm{Cl}\right).$
The Compound $\mathrm{B}$ is:

JEE Main 2021 (18 Mar Shift 1)

Options

• A:
• B:
• C:
• D:

Question

The correct options for the products $\mathrm{A}$ and $\mathrm{B}$ of the following reactions are:

JEE Main 2021 (26 Aug Shift 1)

Options

• A:
• B:
• C:
• D:

Question

Match List-$\mathrm{I}$ with List-$\mathrm{II}$.

List-$\mathrm{I}$		List-$\mathrm{II}$
(a)		(i)	Wurtz reaction
(b)		(ii)	Sandmeyer reaction
(c)	$2{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Cl}+2\mathrm{Na}\stackrel{\mathrm{Ether}}{⟶}{\mathrm{C}}_2{\mathrm{H}}_5-{\mathrm{C}}_2{\mathrm{H}}_5+2\mathrm{NaCl}$	(iii)	Fittig reaction
(d)	$2{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{Cl}+2\mathrm{Na}\stackrel{\mathrm{Ether}}{⟶}{\mathrm{C}}_6{\mathrm{H}}_5-{\mathrm{C}}_6{\mathrm{H}}_5+2\mathrm{NaCl}$	(iv)	Gatterman reaction

Choose the correct answer from the options given below:

JEE Main 2021 (26 Feb Shift 2)

Options

• A: $\left(\mathrm{a}\right)\to \left(\mathrm{iii}\right), \left(\mathrm{b}\right)\to \left(\mathrm{iv}\right), \left(\mathrm{c}\right)\to \left(\mathrm{i}\right), \left(\mathrm{d}\right)\to \left(\mathrm{ii}\right)$
• B: $\left(\mathrm{a}\right)\to \left(\mathrm{ii}\right), \left(\mathrm{b}\right)\to \left(\mathrm{i}\right), \left(\mathrm{c}\right)\to \left(\mathrm{iv}\right), \left(\mathrm{d}\right)\to \left(\mathrm{iii}\right)$
• C: $\left(\mathrm{a}\right)\to \left(\mathrm{iii}\right), \left(\mathrm{b}\right)\to \left(\mathrm{i}\right), \left(\mathrm{c}\right)\to \left(\mathrm{iv}\right), \left(\mathrm{d}\right)\to \left(\mathrm{ii}\right)$
• D: $\left(\mathrm{a}\right)\to \left(\mathrm{ii}\right), \left(\mathrm{b}\right)\to \left(\mathrm{iv}\right), \left(\mathrm{c}\right)\to \left(\mathrm{i}\right), \left(\mathrm{d}\right)\to \left(\mathrm{iii}\right)$

Question

What is A in the following reaction?

JEE Main 2021 (27 Jul Shift 2)

Options

• A:
• B:
• C:
• D:

Question

The structure of product $\mathrm{C},$ formed by the following sequence of reactions is :
${\mathrm{CH}}_3\mathrm{COOH}+{\mathrm{SOCl}}_2⟶\mathrm{A}\underset{{\mathrm{AlCl}}_3}{\overset{\mathrm{Benzene}}{\to }}⟶\mathrm{B}\underset{-\mathrm{OH}}{\overset{\mathrm{KCN}}{\to }}⟶\mathrm{C}$

JEE Main 2021 (31 Aug Shift 1)

Options

• A:
• B:
• C:
• D:

Question

Most stable product of the following reaction is

JEE Main 2022 (25 Jul Shift 1)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

In the given reaction

'$\mathrm{A}$' can be

JEE Main 2022 (25 Jun Shift 2)

Options

• A: benzyl bromide
• B: bromobenzene
• C: cyclohexyl bromide
• D: methyl bromide

Question

The major product of the following reaction is

JEE Main 2022 (27 Jun Shift 1)

Options

• A:
• B:
• C:
• D:

Question

The major product $\left(\mathrm{P}\right)$ in the reaction

JEE Main 2022 (28 Jun Shift 1)

Options

• A:
• B:  
• C:
• D:

Question

Consider the following reaction,

$\mathrm{A}\underset{\begin{array}{l}2. {\mathrm{CN}}^{-}\\ 3. {\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}/∆\end{array}}{\overset{1. {\mathrm{Cl}}_2/\mathrm{hv}}{\to }}4-\mathrm{bromophenylacetic} \mathrm{acid}$

What is $\mathrm{A}$ in the above reaction?

JEE Main 2022 (28 Jun Shift 2)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

Considering the above reactions, the compound '$\mathrm{A}$' and compound '$\mathrm{B}$' respectively are

JEE Main 2022 (29 Jul Shift 1)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

Compound '$\mathrm{A}$' undergoes following sequence of reactions to give compound '$\mathrm{B}$'. The correct structure and chirality of compound '$\mathrm{B}$' is [where $\mathrm{Et}$ is $-{\mathrm{C}}_2{\mathrm{H}}_5$]

​​​​​​​

Compound '$\mathrm{A}$'

JEE Main 2022 (29 Jul Shift 2)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

The stable carbocation formed in the above reaction is :

JEE Main 2022 (29 Jun Shift 2)

Options

• A:

  

• B: ${\mathrm{CH}}_3\stackrel{\oplus }{\mathrm{C}}{\mathrm{H}}_2$
• C: ${\mathrm{CH}}_3-\stackrel{\oplus }{\mathrm{C}}\mathrm{H}-{\mathrm{CH}}_3$
• D:

  

   

Question

In the above conversion of compound ($\mathrm{X}$) to product ($\mathrm{Y}$), the sequence of reagents to be used will be:

JEE Main 2023 (30 Jan Shift 2)

Options

• A:

  (i) ${\mathrm{Br}}_2, \mathrm{Fe}$

  (ii) $\mathrm{Fe}, {\mathrm{H}}^{+}$

  (iii) ${\mathrm{LiAlH}}_4$

• B:

  (i) ${\mathrm{Br}}_2\left(\mathrm{aq}\right)$

  (ii) ${\mathrm{LiAlH}}_4$

  (iii) ${\mathrm{H}}_3{\mathrm{O}}^{+}$

• C:

  (i) $\mathrm{Fe}, {\mathrm{H}}^{+}$

  (ii) ${\mathrm{Br}}_2\left(\mathrm{aq}\right)$

  (iii) ${\mathrm{HNO}}_2$

  (iv) $\mathrm{CuBr}$

• D:

  (i) $\mathrm{Fe}, {\mathrm{H}}^{+}$

  (ii) ${\mathrm{Br}}_2\left(\mathrm{aq}\right)$

  (iii) ${\mathrm{HNO}}_2$

  (iv) ${\mathrm{H}}_3{\mathrm{PO}}_2$

Question

In the following halogenated organic compounds the one with maximum number of chlorine atoms in its structure is:

JEE Main 2023 (31 Jan Shift 2)

Options

• A: Chloral
• B: Gammaxene
• C: Chloropicrin
• D: Freon-$12$

Question

Choose the halogen which is most reactive towards SN1 reaction in the given compounds (A, B, C & D)

A. 

B. 

C. 

D. 

JEE Main 2023 (08 Apr Shift 1)

Options

• A: $\mathrm{A}-{\mathrm{Br}}_{\left(\mathrm{b}\right)};\mathrm{B}-{\mathrm{I}}_{\left(\mathrm{a}\right)};\mathrm{C}-{\mathrm{Br}}_{\left(\mathrm{a}\right)};\mathrm{D}-{\mathrm{Br}}_{\left(\mathrm{a}\right)}$
• B: $\mathrm{A}-\mathrm{Br}\left(\mathrm{b}\right);\mathrm{B}-{\mathrm{I}}_{\left(\mathrm{b}\right)};\mathrm{C}-\mathrm{Br}\left(\mathrm{b}\right);\mathrm{D}-\mathrm{Br}\left(\mathrm{b}\right)$
• C: $\mathrm{A}-{\mathrm{Br}}_{\left(\mathrm{a}\right)};\mathrm{B}-{\mathrm{I}}_{\left(\mathrm{a}\right)};\mathrm{C}-{\mathrm{Br}}_{\left(\mathrm{b}\right)};\mathrm{D}-{\mathrm{Br}}_{\left(\mathrm{a}\right)}$
• D: $\mathrm{A}-{\mathrm{Br}}_{\left(\mathrm{a}\right)};\mathrm{B}-{\mathrm{I}}_{\left(\mathrm{a}\right)};\mathrm{C}-{\mathrm{Br}}_{\left(\mathrm{a}\right)};\mathrm{D}-{\mathrm{Br}}_{\left(\mathrm{a}\right)}$

Question

The major product ‘$\mathrm{P}$’ formed in the given reaction is

JEE Main 2023 (10 Apr Shift 2)

Options

• A:
• B:
• C:
• D:

Question

$2-$Methyl propyl bromide reacts with ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{O}}^{-}$and gives $‘\mathrm{A}’$ whereas on reaction with ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$ it gives $‘\mathrm{B}’.$ The mechanism followed in these reactions and the products $‘\mathrm{A}’$ and $‘\mathrm{B}’$ respectively are:

JEE Main 2023 (13 Apr Shift 1)

Options

• A:

  ${\mathrm{S}}_{\mathrm{N}}2,\mathrm{A}=$iso-butyl ethyl ether;${\mathrm{S}}_{\mathrm{N}}1,\mathrm{B}=$tert-butyl ethyl ether

• B:

  ${\mathrm{S}}_{\mathrm{N}}1, \mathrm{A}=$tert-butyl ethyl ether; ${\mathrm{S}}_{\mathrm{N}}1, \mathrm{B}=2-$butyl ethyl ether

• C:

  ${\mathrm{S}}_{\mathrm{N}}2, \mathrm{A}=2-$butyl ethyl ether; ${\mathrm{S}}_{\mathrm{N}}2, \mathrm{B}=$iso-butyl ethyl ether

• D:

  ${\mathrm{S}}_{\mathrm{N}}1, \mathrm{A}=$tert-butyl ethyl ether; ${\mathrm{S}}_{\mathrm{N}}2, \mathrm{B}=$iso-butyl ethyl ether

Question

The correct arrangement for decreasing order of electrophilic substitution for above compounds is :

JEE Main 2024 (06 Apr Shift 2)

Options

• A: \(\text { (III) } > \text { (I) } > \text { (II) } > \text { (IV) }\)
• B: \(\text { (IV) } > \text { (I) } > \text { (II) } > \text { (III) }\)
• C: \(\text { (III) } > \text { (IV) } > \text { (II) } > \text { (I) }\)
• D: \(\text { (II) } > \text { (IV) } > \text { (III) } > \text { (I) }\)

Question

The correct order of reactivity in electrophilic substitution reaction of the following compounds is:

JEE Main 2024 (31 Jan Shift 2)

Options

• A: B > C > A > D
• B: D > C > B > A
• C: A > B > C > D
• D: B > A > C > D

Question

Which among the following halide/s will not show ${\mathrm{S}}_{\mathrm{N}}1$ reaction:

JEE Main 2024 (27 Jan Shift 2)

Options

• A: ${\mathrm{H}}_2\mathrm{C}=\mathrm{CH}-{\mathrm{CH}}_2\mathrm{Cl}$
• B: ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{Cl}$
• C:
• D:

Question

Alkyl halide is converted into alkyl isocyanide by reaction with

JEE Main 2024 (29 Jan Shift 2)

Options

• A: $\mathrm{NaCN}$
• B: ${\mathrm{NH}}_4\mathrm{CN}$
• C: $\mathrm{KCN}$
• D: $\mathrm{AgCN}$

Question

Given below are two statements:
Statement - I: High concentration of strong nucleophilic reagent with secondary alkyl halides which do not have bulky substituents will follow ${\mathrm{S}}_{\mathrm{N}}2$ mechanism.
Statement - II: A secondary alkyl halide when treated with a large excess of ethanol follows ${\mathrm{S}}_{\mathrm{N}}1$ mechanism.
In the the light of the above statements, choose the most appropriate from the questions given below:

JEE Main 2024 (30 Jan Shift 2)

Options

• A: Statement I is true but Statement II is false.
• B: Statement I is false but Statement II is true.
• C: Both statement I and Statement II are false.
• D: Both statement I and Statement II are true.

Question

Identify $\mathrm{A}$ and $\mathrm{B}$ in the following sequence of reaction

JEE Main 2024 (01 Feb Shift 1)

Options

• A:
• B:
• C:
• D: