General Methods of Preparation, Properties, and Reactions NEET Questions

Organic Chemistry - Hydrocarbons

General Methods of Preparation, Properties, and Reactions MCQ Questions


1.
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
2.
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
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