General Methods of Preparation, Properties, and Reactions NEET Questions

Organic Chemistry - Organic Compounds Containing Halogens

General Methods of Preparation, Properties, and Reactions MCQ Questions


1.
Which of the following is a method for the preparation of alkanes?
A.
Kolbe's reaction
B.
Friedel-Crafts reaction
C.
Reimer-Tiemann reaction
D.
Wurtz reaction
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ANSWER :
D. Wurtz reaction
2.
Which of the following methods is used to prepare alkyl halides from alcohols?
A.
Halogenation
B.
Dehydrohalogenation
C.
Hydration
D.
Reduction
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ANSWER :
B. Dehydrohalogenation
3.
The reaction of ethene with bromine is an example of:
A.
Rearrangement reaction
B.
Substitution reaction
C.
Elimination reaction
D.
Addition reaction
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ANSWER :
D. Addition reaction
4.
Which of the following is a method to prepare alkenes?

NEET - 2022

A.
Hydroboration–oxidation
B.
Dehydration of alcohols
C.
Dehydrohalogenation of alkyl halides
D.
All of these
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ANSWER :
D. All of these
5.

Which reagent is used to oxidize primary alcohols to aldehydes?

A.

LiAlH4

B.

PCC

C.

NaBH4

D.

H2/Pd

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ANSWER :

B. PCC

6.
Which reagent is used to oxidize primary alcohols to aldehydes?
A.
Potassium permanganate
B.
Chromic acid
C.
Sodium dichromate
D.
All of the above
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ANSWER :
B. Chromic acid