CBSE 9th Science | Matter-Nature and its Behaviour (Long Answer Type Questions)
Matter-Nature and its Behaviour (Long Answer Type Questions) Question 1. Classify the following as physical change or chemical change. (i)…
CBSE 9th Science | Matter-Nature and Behaviour (Conceptual Questions with Very Short Answers)
Matter-Nature and Behaviour (Conceptual Questions with Very Short Answers) Question 1. How many elements are known at present? Answer. 115.…