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Alcohols, Phenols and Ethers · Question 24

NEET 2016 (Phase 1)MCQEasy📈 Topic in 0% papers+4−1
1

The reaction [figure] can be classified as

  1. dehydration reaction
  2. Williamson alcohol synthesis reaction
  3. Williamson ether synthesis reaction
  4. alcohol formation reaction.

Answer

(3) Williamson ether synthesis reaction

Solution

Step 1: cyclopentanol + NaH ⇒ sodium cyclopentoxide (alkoxide) + H2.

Step 2: the alkoxide ion attacks CH3-I by SN2 ⇒ methoxycyclopentane + NaI.

As per NCERT, reaction of an alkyl halide with a sodium alkoxide to give an ether is called Williamson synthesis.

∴ The reaction is a Williamson ether synthesis.

Answer: (3)

NEET 2016 (Phase 1)

Keep practising — Alcohols, Phenols and Ethers

2

Which of the following is not the product of dehydration of [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2015
3

Reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduces which one of the following functional group?

  1. -COOH
  2. -CHCl2
  3. -CHO
  4. -CH2Cl
AIPMT 2015
4

The reaction, [figure] is called

  1. Etard reaction
  2. Gattermann-Koch reaction
  3. Williamson synthesis
  4. Williamson continuous etherification process
AIPMT 2015 (Cancelled)
5

Identify Z in the sequence of reactions: CH3CH2CH=CH2 HBr/H2O2 Y C2H5ONa Z

  1. CH3-(CH2)3-O-CH2CH3
  2. (CH3)2CH-O-CH2CH3
  3. CH3(CH2)4-O-CH3
  4. CH3CH2-CH(CH3)-O-CH2CH3
AIPMT 2014
6

Among the following sets of reactants which one produces anisole?

  1. CH3CHO ; RMgX
  2. C6H5OH ; NaOH ; CH3I
  3. C6H5OH ; neutral FeCl3
  4. C6H5CH3 ; CH3COCl ; AlCl3
AIPMT 2014
7

Which of the following will not be soluble in sodium hydrogen carbonate?

  1. 2,4,6-Trinitrophenol
  2. Benzoic acid
  3. o-Nitrophenol
  4. Benzenesulphonic acid
AIPMT 2014
8

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET 2013
9

Which of the following compounds can be used as antifreeze in automobile radiators?

  1. Methyl alcohol
  2. Glycol
  3. Nitrophenol
  4. Ethyl alcohol
AIPMT 2012 (Mains)
10

In the following reaction [figure] The major product is

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2012 (Prelims)
11

Match the compounds given in List-I with List-II and select the suitable option using the code given below.

  1. (A)-(iv), (B)-(i), (C)-(iii), (D)-(ii)
  2. (A)-(iv), (B)-(ii), (C)-(iii), (D)-(i)
  3. (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
  4. (A)-(ii), (B)-(i), (C)-(iv), (D)-(iii)
AIPMT 2011 (Mains)

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