Why is it necessary to balance a chemical equation?

A. mass conservation दिखाने के लिए / To show conservation of mass

Step 1: Identify the concept: this is balancing chemical equations. Step 2: In a balanced equation atoms of each element are equal on both sides which shows conservation of mass. Step 3: Remember balance means atoms equal on both sides.

Step 1: concept पहचानें: यह chemical equation balancing है। Step 2: Balanced equation में दोनों sides पर हर element के atoms equal होते हैं जिससे mass conservation दिखता है। Step 3: Balance means atoms equal on both sides याद रखें।