JEE Advanced Model Paper 9 with solutions for online practice

Question : 8 of 57

Marks: +1, -0

200ml of 2M FeSO4 is treated with 40ml. 1M K2Cr2O7 in the presence of H2SO4 . Then 1M KMnO4 is added to oxidize remaining FeSO4 . The volume of KMnO4 required is ( 4 × y ) ml. The value of ' y ' is _______