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)
Rahul kumar Best Answer
Solution: General Formula of spessartine is Mn3Al2Si3O12 Mole fraction of spessartine in core= 1.35/(0.75+0.90+1.35)= 0.45 Mole fraction of spessartine in rim= 0.75/(0.90+1.35+0.75) = 0.25 Difference in mole fraction= 0.45-0.25 = 0.20