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Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is



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Important Questions on Hydrocarbons
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The major product of the following reaction is:

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(A is a lowest molecular weight alkyne)

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Among the following, the reaction that proceeds through an electrophilic substitution, is:

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The major product obtained in the given reaction is:

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In the following reactions
and , respectively, are:

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HARD

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Which of these reactions are possible?

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