Q : Resonance is exhibited by

(a) phenol (b) aniline (c) nitrobenzene (d) cyclohexane

Q : Which of the following is a aliphatic hydrocarbon?

(a) C₆H₆ (b) C₆H₁₀ (c) C₆H₁₂ (d) C₆H₁₄

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Solution

In the first question the resonance is exhibited by phenol,aniline,and nitrobenzene and is not shown by cyclohexane.
for the second answer benzene, i.e option a , is the only non aliphatic. Benzene is considered to be aromatic. While others do not obey the 4(n)+2 rule for aromaticity.

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