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)
Amit kumar nayak
pKa value is determined experimentally always..H3PO4 has three pKa values pKa 1 = 2.1 pKa 2 = 7.2 pKa 3 = 12.3 According to Ricci generalisation pKa value of H3PO4 is 7.