JEE Mains JEE Advance BITSAT
JEE Mains | PYQ

Year

All years 2026 2025 2024 2023 2022 2021

Identify the product in the following reaction.

If \( 279 \\ \mathrm{g} \) of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ \( \mathrm{g} \). (Nearest integer) [Consider complete conversion]

An amine \( (X) \) is prepared by ammonolysis of benzyl chloride. On adding p-toluenesulphonyl chloride to it the solution remains clear. Molar mass of the amine \( (X) \) formed is ______ \( \mathrm{g\, mol^{-1}} \).
(Given molar mass in \( \mathrm{g\, mol^{-1}} \) \( \mathrm{C}:12, \mathrm{H}:1, \mathrm{O}:16, \mathrm{N}:14 \) )

\( X \) \( \mathrm{g} \) of ethylamine is subjected to reaction with \( \mathrm{NaNO}_2 / \mathrm{HCl} \) followed by water; evolved dinitrogen gas which occupied \( 2.24 \, \mathrm{L} \) volume at STP. \( X \) is \( \_\_\_\_\_\_ \times 10^{-1} \, \mathrm{g} \).

Identify B formed in the reaction.
\( \mathrm{Cl-(CH_2)_4-Cl} \xrightarrow{\text{excess } \mathrm{NH_3}} \mathrm{A} \xrightarrow{\mathrm{NaOH}} \mathrm{B} + \mathrm{H_2O} + \mathrm{NaCl} \)

The final product A, formed in the following multistep reaction sequence is:

\( 9.3 \, \text{g} \) of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ‘P’. The mass of product ‘P’ obtained is \( 26.4 \, \text{g} \). The percentage yield is __________ \( \% \).

From \( 6.55 \, \text{g} \) of aniline, the maximum amount of acetanilide that can be prepared will be _______________ \( \times 10^{-1} \, \text{g} \) .

Number of compounds from the following which cannot undergo Friedel-Crafts reactions is :
toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, m-nitroaniline, m-dinitrobenzene

Number of amine compounds from the following giving solids which are soluble in \( \mathrm{NaOH} \) upon reaction with Hinsberg's reagent is ______.

Given below are two statements:
Statement (I) : The \( \mathrm{NH_2} \) group in aniline is ortho and para directing and powerful activating group.
Statement (II) : Aniline does not undergo Friedel-Craft’s reaction (alkylation and acylation).
In the light of the above statements, choose the most appropriate answer from the options given below:

The product A formed in the following reaction is:

Given below are two statements:
Statement (I): All the following compounds react with \( p \)-toluenesulfonyl chloride.
\( \mathrm{C_6H_5NH_2} \) \(( \mathrm{C_6H_5)_2NH} \) \(( \mathrm{C_6H_5)_3N} \)
Statement (II): Their products in the above reaction are soluble in aqueous \( \mathrm{NaOH} \)
In the light of the above statements, choose the correct answer from the options given below:

The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is __________.

\( 9.3 \) \( \mathrm{g} \) of pure aniline upon diazotization followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume \( 100\% \) yield/conversion) is _______ \( \mathrm{g} \) (nearest integer).

Given below are two statements:
Statement I: Aniline reacts with con. \( \mathrm{H_2SO_4} \), followed by heating at \( 453\text{–}473 \, \mathrm{K} \) gives p-aminobenzene sulphonic acid, which gives blood red colour in the ‘Lassaigne’s test’.
Statement II: In Friedel–Craft’s alkylation and acylation reactions, aniline forms salt with the \( \mathrm{AlCl_3} \) catalyst. Due to this, nitrogen of aniline aquires a positive charge and acts as deactivating group.
In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements:
Statement (I) : Aminobenzene and aniline are same organic compounds.
Statement (II) : Aminobenzene and aniline are different organic compounds.
In the light of the above statements, choose the most appropriate answer from the options given below:

The products \( A \) and \( B \) formed in the formed reaction scheme are respectively

\( X \) g of ethanamine was subjected to reaction with \( \mathrm{NaNO_2/HCl} \) followed by hydrolysis to liberate \( \mathrm{N_2} \) and \( \mathrm{HCl} \). The \( \mathrm{HCl} \) generated was completely neutralized by \( 0.2 \) moles of \( \mathrm{NaOH} \). \( X \) is \( \_ \_ \_ \_ \_ \) g.

Match List-I with List-II.

Choose the correct answer from the options given below

Number of compounds which give reaction with Hinsberg’s reagent is ___________.

The arenium ion which is not involved in the bromination of Aniline is __________.

Which of the following reaction is correct?

Given below are two statements:
IUPAC name of compound A is \( 4 \)-chloro-\( 1 \), \( 3 \)-dinitrobenzene.
IUPAC name of compound B is \( 4 \)-ethyl-\( 2 \)-methylaniline.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following is strongest Bronsted base?

Phthalimide is made to undergo following sequence of reactions.

Total number of \( \pi \) bonds present in product ‘P’ is/are ____________ .

\( 9.3 \, \text{g} \) of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is \( 100\% \) completed is __________ × \( 10^{-1} \, \text{g} \).
(Given molar mass in \( \text{g mol}^{-1} \, \text{g} \) \( \mathrm{N: 14, \ O: 16, \ C: 12, \ H: 1} \))

Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B).

← PreviousQuestion 25 of 28Next →

JEE Main 2024 27th Jan Morning Shift

Which of the following is strongest Bronsted base?