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1

NEET 2016 Phase 1

MCQ (Single Correct Answer)
The reaction


can be classified as
A
dehydration reaction
B
Williamson alcohol synthesis reaction
C
Williamson ether synthesis reaction
D
alcohol formation reaction.

Explanation

The treatment of sodium alkoxide with a suitable alkyl halide to form an ether is called as Williamson ether synthesis reaction.
2

AIPMT 2015

MCQ (Single Correct Answer)
Which of the following reaction(s) can be used for the preparation of alkyl halides?

A
(I) and (II) only
B
(IV) only
C
(III) and (IV) only
D
(I), (III) and (IV) only

Explanation

Lucas reagent [HCl + ZnCl2] can be used for
1o / 2o / 3o-alcohol but if ZnCl2 is absent then only 3o alcohol can be used because it is most reactive due to 3o carbocation.
3

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)
The reaction,


is called
A
Etard reaction
B
Gattermann-Koch reaction
C
Williamson synthesis
D
Williamson continuous etherification process

Explanation

Williamson synthesis is the best method for the preparation of ethers.
4

AIPMT 2015

MCQ (Single Correct Answer)
Reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduces which one of the following functional group?
A
$$-$$COOH
B
$$-$$CHCl2
C
$$-$$CHO
D
$$-$$CH2Cl

Explanation

This is Reimer–Tiemann reaction.

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Class 12