Question

The major aromatic product $\mathrm{C}$ in the following reaction sequence will be :

JEE Main 2020 (02 Sep Shift 1)

Options

• A:
• B:
• C:  
• D:  

Question

What is the product of following reaction?
?

JEE Main 2020 (07 Jan Shift 1)

Options

• A:
• B:
• C:
• D:

Question

Identify $\left(\mathrm{A}\right)$ in the following reaction sequence:

JEE Main 2020 (09 Jan Shift 1)

Options

• A:
• B:
• C:
• D:

Question

Which of the following reagent is suitable for the preparation of the product in the above reaction?

JEE Main 2021 (24 Feb Shift 2)

Options

• A: Red $\mathrm{P}+{\mathrm{Cl}}_2$
• B: ${\mathrm{NaBH}}_4$
• C: ${\mathrm{NH}}_2-{\mathrm{NH}}_2/{\mathrm{C}}_2{\mathrm{H}}_5\stackrel{⊝}{\mathrm{O}}\stackrel{\oplus }{\mathrm{N}}\mathrm{a}$
• D: $\mathrm{Ni}/{\mathrm{H}}_2$

Question

The structure of the starting compound $\mathrm{P}$ used in the reaction given below is:

JEE Main 2021 (27 Aug Shift 1)

Options

• A:
• B:
• C:
• D:

Question

${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CN}\underset{\mathrm{Ether}}{\overset{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }}\mathrm{A}\stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to }\mathrm{B}\underset{\mathrm{HCl}}{\overset{\mathrm{Zn}-\mathrm{Hg}}{\to }}\mathrm{C}$. The correct structure of $\mathrm{C}$ is

JEE Main 2022 (25 Jul Shift 2)

Options

• A:
• B:

  

• C:

  

• D: ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CH}={\mathrm{CH}}_2$

Question

Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?

JEE Main 2022 (25 Jun Shift 2)

Options

• A:

  (a)

  

  (b) ${\mathrm{Na}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7,{\mathrm{H}}^{+}$

• B:

  (a)

  

  (b) $\mathrm{PCC},\mathrm{DCM}$

• C:
• D:

Question

The products formed in the following reaction, $\mathrm{A}$ and $\mathrm{B}$ are

​​​​​​​

JEE Main 2022 (26 Jul Shift 1)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

'$\mathrm{A}$' and '$\mathrm{B}$' respectively are

A. $\underset{\left(2\right)\mathrm{Zn}-{\mathrm{H}}_2\mathrm{O}}{\overset{\left(1\right){\mathrm{O}}_3}{\to }}$ Ethane-$1,2$-dicarbaldehyde $+$Glyoxal/Oxaldehyde

B $\underset{\left(2\right)\mathrm{Zn}-{\mathrm{H}}_2\mathrm{O}}{\overset{\left(1\right){\mathrm{O}}_3}{\to }} 5-$ -oxohexanal

JEE Main 2022 (27 Jun Shift 1)

Options

• A: $1$-methylcyclohex-$1,3$-diene & cyclopentene.
• B: Cyclohex-$1,3$-diene & cyclopentene
• C: Cyclohex-$1,3$-diene & $1$-methylcyclopent-$1$-ene
• D: $1$-methylcyclohex- $1,4$-diene & $1$-methylcyclopent-$1$-ene

Question

In the given reaction

(Where Et is $-{\mathrm{C}}_2{\mathrm{H}}_5$)

The number of chiral carbon/s in product $\mathrm{A}$ is

JEE Main 2022 (25 Jul Shift 1)

Enter your answer

Question

'$\mathrm{R}$' formed in the following sequence of reaction is:

JEE Main 2023 (24 Jan Shift 1)

Options

• A:
• B:
• C:
• D:

Question

Compound $\left(\mathrm{X}\right)$ undergoes following sequence of reactions to give the Lactone $\left(\mathrm{Y}\right)$.

JEE Main 2023 (24 Jan Shift 1)

Options

• A:
• B:
• C:
• D:

Question

‘A’ and ‘B’ in the above reactions are:

JEE Main 2023 (11 Apr Shift 1)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

$\mathrm{A}$ in the above reaction is :

JEE Main 2023 (12 Apr Shift 1)

Options

• A:

  

• B:

  

• C:

  

• D:

  

Question

$\mathrm{D}-(+)-$Glyceraldehyde$\underset{\underset{\mathrm{iii}){\mathrm{HNO}}_3}{\mathrm{ii}){\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}}{\overset{\mathrm{i})\mathrm{HCN}}{\to }}$

The products formed in the above reaction are

JEE Main 2023 (13 Apr Shift 1)

Options

• A:

  One optically active and one meso product

• B: Two optically inactive products
• C:

  Two optically active products

• D:

  One optically inactive and one meso product

Question

The ratio x/y on completion of the above reaction is ______ .

JEE Main 2023 (11 Apr Shift 1)

Enter your answer