Question

A white substance having a strong smell of chlorine is used to clean water storage tank identify the substance with chemical formula

Answer 1

it's alum K2SO4.(AlSO4)2+24H2O.
alum or potassium aluminium sulphate

Answer 2

H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the letter O. Water is chemical substance with no smell, taste or color.