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Alcohols, Phenols and Ethers · Question 12

NEET (UG) 2022 (Phase 2)MatchingEasy📈 Topic in 12% papers+4−1
1

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)

Answer

(4) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Solution

(a) Kolbe's reaction: sodium phenoxide + CO2, then acidification salicylic acid (iv).

(b) Reimer–Tiemann reaction: CHCl3 + aq. NaOH, then H+ salicylaldehyde (iii).

(c) Phenol heated with zinc dust benzene (ii).

(d) Oxidation of phenol with chromic acid (Na2Cr2O7/H2SO4) benzoquinone (i).

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Answer: (4)

NEET (UG) 2022 (Phase 2)

Keep practising — Alcohols, Phenols and Ethers

2

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)
3

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
4

Anisole on cleavage with HI gives :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2020
5

Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :

  1. Sec. butyl alcohol
  2. Tert. butyl alcohol
  3. Isobutyl alcohol
  4. Isopropyl alcohol
NEET (UG) 2020
6

The compound that is most difficult to protonate is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2019
7

The structure of intermediate A in the following reaction, is : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2019
8

The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order

  1. C2H5OH, C2H6, C2H5Cl
  2. C2H5OH, C2H5Cl, C2H5ONa
  3. C2H5Cl, C2H6, C2H5OH
  4. C2H5OH, C2H5ONa, C2H5Cl
NEET 2018
9

In the reaction, [figure] the electrophile involved is

  1. dichloromethyl cation ( CHCl2)
  2. formyl cation ( CHO)
  3. dichloromethyl anion ( CHCl2)
  4. dichlorocarbene (:CCl2)
NEET 2018
10

Identify the major products P, Q and R in the following sequence of reactions : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET 2018
11

The heating of phenyl methyl ether with HI produces

  1. iodobenzene
  2. phenol
  3. benzene
  4. ethyl chloride.
NEET 2017

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