Questions  

The good method for converting benzene into propyl benzene is:

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By Expert Faculty of Sri Chaitanya
a
C6H6+CH3CH2CH2Cl+ Anhyd. AlCl3
b
C6H6+CH3CH2COCl+ Anhyd. AlCl3 and then treatment with Zn/Hg/HCl
c
C6H6+CH3CH2COCl+ Anhyd. AlCl3 and then treatment with H2Ni
d
C6H6+ Anhyd. AlCl3+ Cyclopropane 
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detailed solution

Correct option is B

In the second alternative, a -R group can attach to the benzene ring and form a stable carbocation, giving us a ketone attached to the ring. The ketone is then reduced by the reagents Zn, Hg, and HCl to give us a hydrocarbon, and as a result, propyl benzene. The reaction can be expressed as:

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The final option includes cyclopropane that has been alkylated using anhydrous aluminium chloride. The response is readable as

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