UPSC CDS 2 2018 GK Paper

The molecular mass of Ba(OH)2 = Atomic weight of Ba (137.3) + Atomic weight of Oxygen (16*2) + Atomic weight of Hydrogen (1*2) =
137.3 + 32 + 2 = 171.3
Here, mole factor = 2
Therefore, equivalent weight of Ba(OH)2=

171.5

2

=85.7.