how can we test the purity of a subastances?
Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/whatis-meant-by-pure-substance-how-can-we-check-the-purity-o/science/5351448
https://www.meritnation.com/ask-answer/question/whatis-meant-by-pure-substance-how-can-we-check-the-purity-o/science/5351448