When a capillary is dipped in water, water rises 0.015 m in it. If the surface tension of water is 75×10–3 N/m, the radius of capillary is (a) 0.1 mm (b) 0.5 mm (c) 1 mm (d) 2 mm Ans. …
CHEMISTRY: CONTENTS OF CLASS XI SYLLABUS UNIT I: Some Basic Concepts of Chemistry • General Introduction: Important and scope of chemistry. • Laws of chemical combination, Dalton’s atomic theory: concept of elements, atoms and molecules. • Atomic and molecular masses. …