Online NMDCAT Practice test Chapter # 8

MCQ-26
Alkenes show geometrical isomerism due to
A. Asymmetry
B. Rotation around a single bond
C. Resonance
D. Restricted rotation around a double bond.

Answer: D

MCQ-27
Which of the following is the correct name for Neo Pentane according to the IUPAC rules?
A. 2-Methylbutane
B. 2-Methylpentane
C. 2,2-Dimethylpropane
D. 3-Ethyl-2-methylbutane

Answer: C

MCQ-28
Which of the following reaction describe the unsaturated character of benzene?
A. hydrogenation of benzene
B. Chlorination of benzene in the presence of FeCl3
C. sulphontion of benzene
D. Nitration of benzene

Answer: A

MCQ-29
An active nitrating agent in the nitration of benzene is
A. NO₂
B. NO₂⁺
C. NO^-2
D. NO

Answer: B

MCQ-30
In which of the following reaction characteristic stability of benzene is lost?
A. Chlorination of benzene in the presence of FeCl3
B. sulphontion of benzene
C. Nitration of benzene
D. chlorination of benzene in sunlight