Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dinesh khalmaniya 1
option D Concept- here configuration of 2nd carbon never change so options A,B,C are possible where the configuration is same as given in the reactant. in option D, there is change in the configuration of 2 number carbon so this is not possible