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Alcohols, Phenols and Ethers · Question 5

RE-NEET (UG) 2024MCQEasy📈 Topic in 25% papers+4−1
1

Identify D in the following sequence of reactions: [figure]

  1. n-propyl alcohol
  2. isopropyl alcohol
  3. propanal
  4. propionic acid

Answer

(1) n-propyl alcohol

Solution

CH3CH2OH P + I2 CH3CH2I (A)

CH3CH2I [dry ether]Mg CH3CH2MgI (B)

CH3CH2MgI + HCHO CH3CH2CH2OMgI (C)

CH3CH2CH2OMgI H2O CH3CH2CH2OH + Mg(OH)I

Grignard reagent with methanal gives a primary alcohol: D = n-propyl alcohol.

Answer: (1)

RE-NEET (UG) 2024

Keep practising — Alcohols, Phenols and Ethers

2

Phenol is more acidic than ethanol.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true but R is not the correct explanation of A
  3. A is true but R is false
  4. A is false but R is true
NEET (UG) 2023
3

Consider the following reaction and identify the product (P). [figure] 3-Methylbutan-2-ol

  1. CH3CH=CH-CH3
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2023
4

Consider the following reaction [figure] Identify products A and B :-

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2023
5

Which amongst the following will be most readily dehydrated under acidic conditions?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2023
6

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.
NEET (UG) 2022
7

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
NEET (UG) 2022
8

Match the reagents (List-I) with the product (List-II) obtained from phenol. Choose the correct answer from the options given below :

  1. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
  2. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  3. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
  4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
NEET (UG) 2022 (Phase 2)
9

Which one of the following reaction sequence is incorrect method to prepare phenol?

  1. [figure] , oleum, NaOH, H3O+
  2. Aniline, NaNO2 + HCl, H2O, heating
  3. Cumene, O2, H3O+
  4. [figure] , NaOH, STP condition
NEET (UG) 2022 (Phase 2)
10

What is the IUPAC name of the organic compound formed in the following chemical reaction? Acetone [(ii) H2O, H+](i) C2H5MgBr, Dry ether product

  1. 2-methylbutan-2-ol
  2. 2-methylpropan-2-ol
  3. pentan-2-ol
  4. pentan-3-ol
NEET (UG) 2021
11

Anisole on cleavage with HI gives :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2020

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