Conservation Of Mass in Class 9 Science : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

What does the law of conservation of mass state?

Mass is gained during a chemical reaction

Mass remains constant during a chemical reaction

Mass can be created in a chemical reaction

Mass is lost during a chemical reaction

View Answer

Correct Answer: B — Mass remains constant during a chemical reaction

Explanation:

Mass is neither created nor destroyed during a chemical reaction.