Question

In the law of constant proportion, the word constant means that the mass ratio of the elements in a chemical compound is same everywhere in the universe.

• A. True
• B. False

Answer 1

The correct option is A

True

According to the law of constant proportion, in a given chemical compound the elements are always present in a definite proportion by mass. Sulphuric acid is made up of individual elements of hydrogen, sulphur and oxygen. The chemical compound is written as H₂SO₄. The same proportion by mass of hydrogen, sulphur and oxygen must combine to form sulphuric acid.