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Alcohols, Phenols and Ethers

JEE Main 2026 (Online) 5th April Morning ShiftNumericalMedium📈 Topic in 13% papers+4
Ques. 1JEE Main 2026, 5 April (Morning Shift)

One mole of phenol is treated with dilute HNO3 at 298 K to give a mixture of products. The mixture is separated by steam distillation. The steam volatile compound (X) is separated. The increase in percentage of oxygen in (X) with respect to phenol is 10-1% (Given molar mass in g mol-1 H : 1, C : 12, N : 14, O : 16)

Answer

175

Solution

Phenol + dil. HNO3 (298 K) → o-nitrophenol + p-nitrophenol.

o-Nitrophenol has intramolecular H-bonding (no association), so it is steam volatile ⇒ X = o-nitrophenol [figure] , C6H5NO3

M(X) = 72 + 5 + 14 + 48 = 139 g mol-1 ⇒ % O in X = 48139 100 = 34.53\%

Phenol C6H6O: M = 94 ⇒ % O = 1694 100 = 17.02\%

∴ Increase = 34.53 − 17.02 = 17.51% = 175.1 × 10-1% ≈ 175 × 10-1%

Answer: 175

Keep practising — Alcohols, Phenols and Ethers

Ques. 2JEE Main 2026, 4 April (Morning Shift)

Amongst the following, the total number of compounds soluble in aqueous NaOH at room temperature is: [figure]

  1. 5
  2. 4
  3. 6
  4. 3
Ques. 3JEE Main 2026, 28 January (Morning Shift)

Consider the following reaction sequence : [figure] Compound (y) develops characteristic colour with neutral FeCl3 solution. Identify the INCORRECT statement from the following for the above sequence.

  1. Compound y will dissolve in NaHCO3 and evolve a gas.
  2. Compound x is more acidic than compound y.
  3. Both compounds x and y will dissolve in NaOH.
  4. Both compounds x and y will burn with sooty flame.
Ques. 4JEE Main 2026, 24 January (Morning Shift)

Consider the following two reactions A and B. [figure] Numerical value of [molar mass of x + molar mass of y] is

  1. 46
  2. 160
  3. 88
  4. 4
Ques. 5JEE Main 2026, 24 January (Morning Shift)

A hydroxy compound (X) with molar mass 122 g mol-1 is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of 290 g mol-1. The number of hydroxyl groups present in compound (X) is:

  1. 2
  2. 4
  3. 3
  4. 5
Ques. 6JEE Main 2026, 24 January (Evening Shift)

From the following, how many compounds contain at least one secondary alcohol? [figure] Choose the correct answer from the options given below :

  1. Three
  2. Two
  3. Four
  4. Five
Ques. 7JEE Main 2026, 23 January (Evening Shift)

A mixed ether (P), when heated with excess of hot concentrated hydrogen iodide produces two different alkyl iodides which when treated with aq. NaOH give compounds (Q) and (R). Both (Q) and (R) give yellow precipitate with NaOI. Identify the mixed ether (P) :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 8JEE Main 2026, 22 January (Morning 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 true but Statement II is false
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is false but Statement II is true
Ques. 9JEE Main 2026, 22 January (Evening Shift)

3,3-Dimethyl-2-butanol cannot be prepared by : Choose the correct answer from the options given below :

  1. B and E Only
  2. B, C and E Only
  3. B and C Only
  4. B Only
Ques. 10JEE Main 2025, 8 April (Evening Shift)

Which one of the following reactions will not lead to the desired ether formation in major proportion? (iso-Bu isobutyl, sec-Bu sec-butyl, n-Pr n-propyl, tBu tert-butyl, Et ethyl)

  1. [figure]
  2. iso-Bu O Na + sec-BuBr sec-Bu–O–iso-Bu
  3. [figure]
  4. tBu O Na + EtBr tBu-O-Et
Ques. 11JEE Main 2025, 7 April (Morning Shift)

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

  1. Statement I is false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false

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