Question

Select odd one out and give reasons:
a) Soap, toothpaste, baking soda, curd
b) Na 2 CO 3 .10H 2 O, Na 2 SO 4 .10H 2 O, BaCl 2 .2H 2 O, CaOCl

Answer 1

b) Na 2 CO 3 .10H 2 O, Na 2 SO 4 .10H 2 O, BaCl 2 .2H 2 O, CaO is answer