Heavy water is found in minute quantities in rain water, on the leaves of Banyan trees, and in the last remain obtain by melting of snow as in himalayas. The weight precentage fo deuterium in heavy water is

Heavy water is found in minute quantities in rain water, on the leaves

1.	Heavy water is found in minute quantities in rain water, on the leaves of Banyan trees, and in the last remain obtain by melting of snow as in himalayas. The weight precentage fo deuterium in heavy water is
Answer» 0.02 0.5 0.2 0.1 Solution :MOLECULAR weight of `D_2O = 20` 4 grams of D in 20 gramsof `D_2O` THEREFORE percentage of `D= 4/20 xx 100 = 20`