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Per NCERT Class 9 Science Ch 9, the LAW OF CONSERVATION OF MASS states which of the following?
AMatter can neither be created nor destroyed in a chemical reaction — total mass of products equals total mass of reactants
BMass can be created from energy in any reaction
CMass increases with temperature
DMass disappears when gases form
Answer & Solution
Correct answer: A. Matter can neither be created nor destroyed in a chemical reaction — total mass of products equals total mass of reactants
Per NCERT §9.1, conservation of mass = mass reactants = mass products. The other options misstate.
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