Intext Question & Answer Class 9 Science Exploration Chapter 9 Atomic Foundation of Matter
Think It Over (Page No. 162) 1. Water can be obtained from various sources. Are all these samples of water chemically identical? Yes, all samples of purified water are chemically identical, regardless of their source — whether from rivers, borewells, rainwater, or the ocean. This is explained by the Law of Constant Proportions (Proust’s Law), […]