NCERT Exemplar
NCERT Exemplar Problems Class 9 Science – Atoms and Molecules
NCERT Exemplar Problems Class 9 Science – Atoms and Molecules Class 9 Science Multiple Choice Questions (MCQs) Question 1: Which of the following correctly represents 360 g of water? (i) 2 moles of H20 (ii) 20 moles of water (iii) 022 x 1023 molecules of water (iv) 12044 x 1025 molecules of water Read more…