In the following set of aromatic compounds, the correct order of reactivity towards Friedel-Crafts alkylation reaction is:

i > i i > i i i > i v

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i i > i v > i i i > i

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i v > i i i > i > i i

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i i i > i > i v > i i

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Solution

The correct option is C $i v > i i i > i > i i$
Reactivity towards Friedel-Crafts alkylation is proportional to electron density in the benzene ring.
Electron donating group increases electron density on benzene ring whereas electron withdrawing group decreases the electron density on a benzene ring.

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In the following set of aromatic compounds, the correct order of reactivity towards Friedel-Crafts alkylation reaction is:

The correct option is C iv>iii>i>iiReactivity towards Friedel-Crafts alkylation is proportional to electron density in the benzene ring.Electron donating group increases electron density on benzene ring whereas electron withdrawing group decreases the electron density on a benzene ring.