Class 9 Science Atoms and Molecules MCQ
Class 9th Subject Science Chapter 3 Atoms and Molecules Questions Type MCQs pdf File Download Available Class 9 Science Atoms and Molecules MCQ 1. A sample of NH3 molecule irrespective of source contains 82.35% Nitrogen and 17.65% of Hydrogen by mass. This data supports: (A) Law of Conservation of Mass (B) Law of Multiple proportions (C) … Read more