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)
Neeraj bangruwa
ans. Grounding problem is due to varying potential you heard in local language voltage jyada aa gayi to compensate tha we have to proper grounding the system.