In a reaction excess of H2O2 is added to 0.1 mole of acidfied KMnO4 solution. Then the STP volume of O2 liberated is?
How many coulombs of current will liberate 11.2 lit of chlorine at STP from a chloride solution ?
The total volume of mixture of 2 g of helium and 7 g of nitrogen under S.T.P. conditions is