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Alcohols, Phenols and Ethers

NEET 2018MCQEasyNot asked in last 5 yrs+4−1
Ques. 1NEET 2018

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

Answer

(4) C2H5OH, C2H5ONa, C2H5Cl

Solution

2C2H5OH + 2Na 2C2H5ONa + H2 ⇒ B = C2H5ONa

C2H5OH + PCl5 C2H5Cl + POCl3 + HCl ⇒ C = C2H5Cl

Williamson synthesis: C2H5ONa + C2H5Cl C2H5OC2H5 + NaCl

A = C2H5OH, B = C2H5ONa, C = C2H5Cl

Answer: (4)

Keep practising — Alcohols, Phenols and Ethers

Ques. 2NEET 2018

In the reaction, [figure] the electrophile involved is

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

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 4NEET 2017

The heating of phenyl methyl ether with HI produces

  1. iodobenzene
  2. phenol
  3. benzene
  4. ethyl chloride.
Ques. 5NEET 2017

Which one is the most acidic compound?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 6NEET 2016 (Phase 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.
Ques. 7AIPMT 2015

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 8AIPMT 2015

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
Ques. 9AIPMT 2015 (Cancelled)

The reaction, [figure] is called

  1. Etard reaction
  2. Gattermann-Koch reaction
  3. Williamson synthesis
  4. Williamson continuous etherification process
Ques. 10AIPMT 2014

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
Ques. 11AIPMT 2014

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

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