Which of the following statements about tropone is true?
- AIt is heterocyclic having molecular formula $C_5H_{10}O$
- BIt is benzenoid having molecular formula $C_{10}H_8O$
- CIt is non-benzenoid having molecular formula $C_7H_6O$
- DIt is heterocyclic having molecular formula $C_7H_6O$
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Give the name and structure of an aromatic hydrocarbon with the molecular formula $C_{12}H_{10}$ which contains two benzene rings.
Medium
View SolutionHydrogenation of naphthalene $(P)$ with excess hydrogen gas stops cleanly at $1, 2, 3, 4-$ tetrahydronaphthalene $(Q).$ What conclusion can be drawn from this experiment?
Difficult
View SolutionThe correct arrangement for the decreasing order of electrophilic substitution for the above compounds is:
Identify the correct statements for a ring system to exhibit aromaticity.
$(i)$ It must not be planar.
$(ii)$ It must possess $(4n+2) \pi$-electrons.
$(iii)$ It must be planar.
$(iv)$ It must possess $4n \pi$-electrons.
The correct answer is
$(i)$ It must not be planar.
$(ii)$ It must possess $(4n+2) \pi$-electrons.
$(iii)$ It must be planar.
$(iv)$ It must possess $4n \pi$-electrons.
The correct answer is
In a reaction of ${C_6H_5Y}$,the major product $(> 60\%)$ is the $m$-isomer. Therefore,the group $Y$ is:
MediumAIIMS 1997
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