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Amines

JEE Main 2024 (Online) 8th April Morning ShiftNumericalMedium📈 Topic in 46% papers+4
Ques. 1JEE Main 2024, 8 April (Morning Shift)

Number of amine compounds from the following giving solids which are soluble in NaOH upon reaction with Hinsberg's reagent is . [figure]

Answer

5

Solution

Hinsberg's reagent (C6H5SO2Cl) with a 1° amine:

RNH2 + C6H5SO2Cl C6H5SO2NHR

This sulphonamide still has an acidic N–H, so the solid dissolves in NaOH; only 1° amines do this.

1° amines here: aniline, 4-aminodiphenylamine, 2-methoxyaniline, propan-1-amine and cyclohexanamine = 5

Not counted: benzamide, semicarbazide and urea (amides, not amines); N-methylaniline (2°, its solid is insoluble in NaOH); the two 3° amines (no reaction).

Answer: 5

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Ques. 2JEE Main 2024, 8 April (Evening Shift)

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

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is true but Statement II is false
Ques. 3JEE Main 2024, 6 April (Morning Shift)

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

Ques. 4JEE Main 2024, 6 April (Evening Shift)

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 g mol-1. (Given molar mass in g mol-1 C : 12, H : 1, O : 16, N : 14)

Ques. 5JEE Main 2024, 5 April (Morning Shift)

9.3 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 g. The percentage yield is %.

Ques. 6JEE Main 2024, 5 April (Evening Shift)

X g of ethanamine was subjected to reaction with NaNO2/HCl followed by hydrolysis to liberate N2 and HCl. The HCl generated was completely neutralised by 0.2 moles of NaOH. X is g.

Ques. 7JEE Main 2024, 4 April (Morning Shift)

Xg of ethylamine is subjected to reaction with NaNO2/HCl followed by water; evolved dinitrogen gas which occupied 2.24 L volume at STP. X is 10-1 g.

Ques. 8JEE Main 2024, 4 April (Evening Shift)

From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be 10-1 g.

Ques. 9JEE Main 2024, 4 April (Evening Shift)

Phthalimide is made to undergo following sequence of reactions. [figure] Total number of bonds present in product 'P' is/are .

Ques. 10JEE Main 2024, 1 February (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Both Statement I and Statement II are correct
  2. Both Statement I and Statement II are incorrect
  3. Statement I is correct but Statement II is incorrect
  4. Statement I is incorrect but Statement II is correct
Ques. 11JEE Main 2024, 1 February (Morning Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Both Statement I and Statement II are correct
  2. Statement I is incorrect but Statement II is correct
  3. Statement I is correct but Statement II is incorrect
  4. Both Statement I and Statement II are incorrect

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