'R' formed in the following sequence of reaction is

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[@sriprakashjaiswal3189]

Thank you sir

[@skharat7088]

Was really helpful sir thanks for fantastic explanation 👍

[@utakarshsingh8970]

Thankk you sirr!

[@vanshsingh2340]

Helpfull ❤

[@sonorousgaming7202]

Sir please book recommend kar dijiye.
Aur sir isme chlorine ko CN se kyu nahi substitute kar sakte?

[@manavroy7293]

because benzene se chlorine nikalna mushkil hota h isliye....

[@mkmbrawlstars2899]

Maybe double bond character ke vajah se