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)
Anup Padwal
No it is not necessary. but you can draw it by understanding the basic of periodic table, bonding and nomenclature system it will be beneficial in all theories and practical.