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 catalysts is NOT used for the hydrogenation of alkenes to alkanes?
A.
Finely divided palladium
B.
Finely divided platinum
C.
Anhydrous AlCl3
D.
Raney nickel
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ANSWER :
C. Anhydrous AlCl3
2.
In haloalkanes, the halogen atom is attached to:
A.
sp² hybridised carbon atom of an aryl group
B.
sp³ hybridised carbon atom of an alkyl group
C.
sp hybridised carbon atom of an alkyne
D.
sp² hybridised carbon of a vinyl group
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ANSWER :
B. sp³ hybridised carbon atom of an alkyl group
3.
Wurtz reaction is used for the preparation of:
A.
Aromatic hydrocarbons
B.
Symmetrical higher alkanes with even number of carbon atoms
C.
Lower alkanes only
D.
Unsymmetrical higher alkanes
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ANSWER :
B. Symmetrical higher alkanes with even number of carbon atoms
4.
The general formula of an alkyl halide (haloalkane) is:
A.
CₙH₂ₙX
B.
CₙH₂ₙ₋₁X
C.
CₙH₂ₙ₊₂X
D.
CₙH₂ₙ₊₁X
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ANSWER :
D. CₙH₂ₙ₊₁X
5.
In Wurtz reaction, when CH3Br and C2H5Br are taken together, the products formed are:
A.
Ethane, propane and n-butane
B.
Only ethane and propane
C.
Only propane
D.
Only n-butane
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ANSWER :
A. Ethane, propane and n-butane
6.
(CH₃)₃CCl is classified as:
A.
Tertiary (3°) alkyl halide
B.
Primary (1°) alkyl halide
C.
Secondary (2°) alkyl halide
D.
Vinyl halide
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ANSWER :
A. Tertiary (3°) alkyl halide