NCERT Exemplar
NCERT Exemplar Problems Class 9 Science – Is Matter Around us Pure
NCERT Exemplar Problems Class 9 Science – Is Matter Around us Pure Multiple Choice Questions (MCQs) Question 1: Which of the following statements are true for pure substances? (i) Pure substances contain only one kind of particles. (ii) Pure substances may be compounds or mixtures. (iii) Pure substances have Read more…