Chemistry Class 12
Solutions to CBSE Sample Paper - Chemistry Class 12

Give reason for the following:

a. During the electrophilic substitution reaction of haloarenes, para substituted derivative is the major product.

b. The product formed during S N 1 reaction is a racemic mixture.



a. At the ortho position, higher steric hindrance is there, hence para isomer is usually predominate and is obtained in the major amount.

b. During the SN 1 mechanism, intermediate carbocation formed is sp 2 hybridized and planar in nature. This allows the attack of nucleophile from either side of the plane resulting in a racemic mixture.


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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.