Alkynes(Acidic Character: Addition of Hydrogen,...) NEET Questions

Organic Chemistry - Hydrocarbons

Alkynes(Acidic Character: Addition of Hydrogen,...) MCQ Questions


1.
Which of the following terminal alkynes shows acidic character?
A.
Propyne
B.
But-2-yne
C.
Butane
D.
Ethene
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ANSWER :
A. Propyne
2.
The process of polymerization of acetylene leads to the formation of:

NEET - 2016

A.
Polyacetylene
B.
Polypropylene
C.
Polyethylene
D.
None of these
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ANSWER :
A. Polyacetylene
3.
Which product is formed when ethyne is treated with H₂ in the presence of Lindlar's catalyst?
A.
Ethane
B.
Ethene
C.
Ethyne
D.
Methane
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ANSWER :
B. Ethene
4.
Which of the following reacts with NaNH₂ to form a sodium salt?
A.
Ethane
B.
Ethene
C.
Ethyne
D.
Butane
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ANSWER :
C. Ethyne
5.
Which of the following alkynes reacts with ammoniacal silver nitrate to form a white precipitate?

NEET - 2016

A.
Propyne
B.
Butyne
C.
Ethyne
D.
Chlorobenzene
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ANSWER :
C. Ethyne
6.
Which of the following is formed when ethyne reacts with bromine?
A.
1,2-dibromoethane
B.
1,1,2,2-tetrabromoethane
C.
Ethyne
D.
Bromoethene
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ANSWER :
B. 1,1,2,2-tetrabromoethane