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JEE CHEMISTRY MCQ: HYDROCARBONS
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Which of the following annulenes is anti-aromatic?
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Correct option: B
Cyclobutadiene
Option B is correct. Cyclobutadiene is anti-aromatic because it is cyclic, planar, has 4Ο electrons (which is not a HΓΌckel number), and has alternating single and double bonds.
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Practice All Chapter MCQs β
In benzene, there is a delocalisation of Ο-electrons. Hence, each Ο-electron is attached byβ¦.carbon nuclei.
Which statement is false?
Assertion (A) In comparison to ethyl chloride, it is not easy to carry outnucleophilic substitution on vinyl chloride.
Reason (R) Vinyl group is an electron donating. If 2-oxopropanal and methanal are obtained by the reductive ozonolysis of compound (A), then the number of -bonds presents in Fischer-Tropsch process is used in the manufacture of:
Reason (R) Vinyl group is an electron donating. If 2-oxopropanal and methanal are obtained by the reductive ozonolysis of compound (A), then the number of -bonds presents in Fischer-Tropsch process is used in the manufacture of: