Alkanes (Conformations: Sawhorse and Newman Projections : Mechanism of Halogenation ) NEET Questions

Organic Chemistry - Hydrocarbons

Alkanes (Conformations: Sawhorse and Newman Projections : Mechanism of Halogenation ) MCQ Questions


13.
Which of the following does not affect the rate of halogenation?
A.
Light
B.
Temperature
C.
Concentration
D.
Solvent polarity
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ANSWER :
D. Solvent polarity
14.
Which is more selective in halogenation?
A.
Chlorine
B.
Bromine
C.
Fluorine
D.
Iodine
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ANSWER :
B. Bromine
15.
The major product in the bromination of propane is:
A.
1-Bromopropane
B.
2-Bromopropane
C.
3-Bromopropane
D.
No reaction
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ANSWER :
B. 2-Bromopropane
16.
Sawhorse projection of ethane in eclipsed conformation shows:
A.
Hydrogens aligned
B.
Hydrogens staggered
C.
120° angles
D.
No strain
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ANSWER :
A. Hydrogens aligned
17.
Which conformation is highest in energy?
A.
Staggered
B.
Eclipsed
C.
Gauche
D.
Anti
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ANSWER :
B. Eclipsed
18.
Torsional strain is due to:
A.
Bond angle deviation
B.
Bond stretching
C.
Electron repulsion in eclipsed form
D.
Rotation restriction
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ANSWER :
C. Electron repulsion in eclipsed form