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The chemical system that is non- aromati...

The chemical system that is non`-` aromatic is

A

B

C

D

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The correct Answer is:
C
Compound (c ) has no `pi`-electrons and hence is not aromatic. Further, compound shown in option (d) is called azulene in which both the rings have six `pi`-electrons and hence it is an aromatic compound. So are benzene (a) and naphthalene (b).
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PRADEEP-HYDROCARBONS-Competition Focus (JEE(main and advanced)/Medical Entrance) I. MULTIPLE CHOICE QUESTIONS
  1. Which of the following compounds is not aromatic ?

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  2. From the following compounds choose the one which is not aromatic ?

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  3. The chemical system that is non- aromatic is

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  4. Among the following the aromatic compound is

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  5. Which of the following compounds are aromatic ?

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  6. Which is a non-aromatic compound

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  7. The non aromatic compound among the following is -

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  8. The radical is aromatic because it has

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  9. Which of the following is not aromatic

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  10. Cycloheptatrienyl cation is :

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  11. The most likely protonation site in the following molecule is

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  12. Which one of the following is an aromatic compound ?

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  13. The total number of aromatic species genetic the following reactions i...

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  14. Given : The enthalpy of hydrogenation of these compounds will be...

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  15. In reaction C6H5CH3overset"oxidation"to A overset"NaOH"to B overset"...

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  16. What is the electrophile when RCl + AlCl3 are used in Friedel-Crafts r...

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  17. In the given reaction, the product P is

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  18. The treatment of benzene with isobutene in the presence of sulphuric a...

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  19. When Friedel-Crafts alkylation of benzene is carried out with n-propyl...

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  20. Which of the following reactions would give isopropylbenzene as the ma...

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