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MCQ-21
Benzene cannot undergo
A. Addition reaction
B. Electrophilic substitution reaction
C. Polymerization
D. Oxidation

Answer: C

MCQ-22
C-C bond length in benzene is
A. 1.39 A°
B. 1.54 A°
C. 1.34 A°
D. 1.09 A°

Answer: A

MCQ-23

The organic compound which contains =C=NH as a functional group is called
A. Amine
B. Imine
C. Amide
D. Nitrile

Answer: B

MCQ-24
How many numbers of carbon and hydrogens respectively in neopentane
A. 12, 5
B. 4, 10
C. 10, 4
D. 5, 12

Answer: D

MCQ-25
Ethanol (CH₃CH₂OH) and dimethyl ether (CH₃OCH₃) are best considered:
A. Structural Isomers
B. Functional Group isomers
C. Position Isomers
D. Cis-trans isomers

Answer: B