Question

Identify $\mathrm{A}$ in the given reaction.

JEE Main 2021 (26 Feb Shift 2)

Options

• A:
• B:
• C:
• D:

Question

To synthesise $1$ mole of $2-$methylpropan$-2-$ol from Ethylethanoate equivalents of ${\mathrm{CH}}_3\mathrm{MgBr}$ reagent will be required. (Integer value)

JEE Main 2021 (20 Jul Shift 1)

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Question

The intermediate $\mathrm{X}$, in the reaction

JEE Main 2022 (25 Jun Shift 1)

Options

• A:
• B:
• C:
• D:

Question

In the following reaction :

The compounds $\mathrm{A}$ and $\mathrm{B}$ respectively are

JEE Main 2022 (25 Jun Shift 1)

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• A:
• B:
• C:
• D:

Question

The major product formed in the following reaction, is

JEE Main 2022 (25 Jun Shift 2)

Options

• A:
• B:
• C:
• D:

Question

A sample of $4.5\mathrm{mg}$ of an unknown monohydric alcohol, $\mathrm{R}-\mathrm{OH}$ was added to methylmagnesium iodide. A gas is evolved and is collected and its volume measured to be $3.1 \mathrm{mL}$. The molecular weight of the unknown alcohol is $\mathrm{g}/\mathrm{mol}$.

JEE Main 2022 (25 Jul Shift 2)

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Question

$\mathrm{A}$' and '$\mathrm{B}$' formed in the following set of reactions are:

JEE Main 2023 (24 Jan Shift 1)

Options

• A:
• B:
• C:
• D:

Question

' A ' in the given reaction is

JEE Main 2023 (25 Jan Shift 2)

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• A:

  

   

   

• B:

  

   

• C:

  

   

• D:

  

   

Question

An organic compound ' $A$ ' with empirical formula ${\mathrm{C}}_6{\mathrm{H}}_6\mathrm{O}$ gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of $B . B$ is

JEE Main 2023 (31 Jan Shift 1)

Options

• A:

  

   

• B:

  

   

• C:

  

   

• D:

  

   

Question

Find out the major product from the following reaction.

JEE Main 2023 (06 Apr Shift 2)

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• A:

  

• B:

  

• C:

  

• D:

  

Question

A compound $\text{'}\mathrm{X}\text{'}$ when treated with phthalic anhydride in presence of concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ yields $\text{'}\mathrm{Y}\text{'}$. $\text{'}\mathrm{Y}\text{'}$ is used as an acid/base indicator. $\text{'}\mathrm{X}\text{'}$ and $\text{'}\mathrm{Y}\text{'}$ are respectively

JEE Main 2023 (08 Apr Shift 2)

Options

• A: Anisole, methyl orange
• B: Salicylaldehyde, Phenolphthalein
• C: Toludine, Phenolphthalein
• D: Carbolic acid, Phenolphthalein

Question

Suitable reaction condition for preparation of Methyl phenyl ether is

JEE Main 2023 (10 Apr Shift 1)

Options

• A: ${\mathrm{PhO}}^{⊝}{\mathrm{Na}}^{\oplus }, \mathrm{MeOH}$
• B: Benzene, $\mathrm{MeBr}$
• C: $\mathrm{Ph}-\mathrm{Br}, {\mathrm{MeO}}^{\ominus }{\mathrm{Na}}^{\oplus }$
• D: ${\mathrm{PhO}}^{⊝}{\mathrm{Na}}^{\oplus }, \mathrm{MeBr}$

Question

L-isomer of tetrose $\mathrm{X}\left({\mathrm{C}}_4{\mathrm{H}}_8{\mathrm{O}}_4\right)$ gives positive Schiff’s test and has two chiral carbons. On acetylation ‘X’ yields triacetate. ‘X’ also undergoes following reactions.

JEE Main 2023 (11 Apr Shift 1)

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• A:

  

   

• B:

  

• C:

  

   

• D:

  

Question

Product $\left[\mathrm{X}\right]$ formed in the above reaction is:

JEE Main 2023 (11 Apr Shift 2)

Options

• A:
• B:
• C:
   
• D:

Question

‘$\mathrm{A}$’ formed in the above reaction is

JEE Main 2023 (15 Apr Shift 1)

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• A:

  

• B:

  

• C:

  

• D:

  

Question

\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{Br}+\mathrm{NaOH} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}}\) Product 'A'
Consider the above reactions, identify product \(B\) and product \(C\).

JEE Main 2024 (04 Apr Shift 2)

Options

• A: \(\mathrm{B}=1\)-Propanol \(\mathrm{C}=2\)-Propanol
• B: \(\mathrm{B}=\mathrm{C}=2\)-Propanol
• C: \(\mathrm{B}=2\)-Propanol \(\mathrm{C}=1\)-Propanol
• D: \(\mathrm{B}=\mathrm{C}=1\)-Propanol

Question

Identify compound \((\mathrm{Z})\) in the following reaction sequence.

JEE Main 2024 (05 Apr Shift 1)

Options

• A:
  
• B:
  
• C:
  
• D:
  

Question

Consider the given chemical reaction sequence :
Total sum of oxygen atoms in Product A and Product B are _______

JEE Main 2024 (05 Apr Shift 1)

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Question

Consider the above reaction sequence and identify the major product \(P\).

JEE Main 2024 (05 Apr Shift 2)

Options

• A: Methoxymethane
• B: Methanoic acid
• C: Methanal
• D: Methane

Question

In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is _____

JEE Main 2024 (06 Apr Shift 1)

Options

• A:
  
• B:
  
• C:
  
• D:
  

Question

Consider the given reaction, identify the major product \(P\). \(\mathrm{CH}_3-\mathrm{COOH} \xrightarrow[\text { (iv) } \mathrm{H}_2 \mathrm{O} / \overline{\mathrm{O}} \mathrm{H}, \Delta]{\text { (i) } \mathrm{LiAlH}_4 \text { (ii) } \mathrm{PCC} \text { (iii) } \mathrm{HCN} / \overline{\mathrm{O}} \mathrm{H}}\)"P"

JEE Main 2024 (06 Apr Shift 2)

Options

• A:
  
• B: \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{OH}\)
• C:
  
• D:
  

Question

The major products formed :
\(\mathrm{A}\) and \(\mathrm{B}\) respectively are:

JEE Main 2024 (06 Apr Shift 2)

Options

• A:
  
• B:
  
• C:
  
• D:
  

Question

Identify the major products \(\mathrm{A}\) and \(\mathrm{B}\) respectively in the following set of reactions.

JEE Main 2024 (08 Apr Shift 1)

Options

• A:
  
• B:
  
• C:
  
• D:
  

Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $p{K}_a$ value of phenol is $10.0$ while that of ethanol is $15.9$.

Reason R: Ethanol is stronger acid than phenol.

In the light of the above statements, choose the correct answer from the options given below:

JEE Main 2024 (31 Jan Shift 1)

Options

• A: A is true but R is false
• B: A is false but R is true
• C: Both A and R are true and R is the correct explanation of A
• D: Both A and R are true but R is NOT the correct explanation of A.

Question

Match List-I with List-II.

	List I (Reaction)		List II (Reagent(s))
(A)		(I)	${\mathrm{Na}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7/{\mathrm{H}}_2{\mathrm{SO}}_4$
(B)		(II)	$\text{ (i) }\mathrm{NaOH}\text{ (ii) }{\mathrm{CH}}_3\mathrm{Cl}$
(C)		(III)	(i)$\mathrm{NaOH},{\mathrm{CHCl}}_3$ (ii) $\mathrm{NaOH}$ (iii) $\mathrm{HCl}$
(D)		(IV)	(i) $\mathrm{NaOH}$ (ii) ${\mathrm{CO}}_2$ (iii) $\mathrm{HCl}$

Choose the correct answer from the options given below:

JEE Main 2024 (27 Jan Shift 2)

Options

• A: (A)-(IV), (B)-(I), (C)-(III), (D)-(II)
• B: (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
• C: (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
• D: (A)-(IV), (B)-(III), (C)-(I), (D)-(II)