Chemistry IX | Matter-Its Nature and Behaviour | Part 1
Matter-Its Nature and Behaviour | Part 1 INTRODUCTION Matter · Anything that occupies space , possesses mass and exert pressure…
Matter-Its Nature and Behaviour | Part 1 INTRODUCTION Matter · Anything that occupies space , possesses mass and exert pressure…
Health and Diseases | Part 2 Disease caused by bacteria Tuberculosis (T.B.) Tuberculosis (T.B.) was first discovered by Robert Koch…