alleryStart learning →A chemical equation is balanced to obey the law of
Aconservation of mass
Bconservation of energy
Cconstant proportions
Dmultiple proportions
Answer & Solution
Correct answer: A. conservation of mass
1. In a reaction, atoms are only rearranged, never created or destroyed.
2. So the total mass of reactants equals that of products — the **law of conservation of mass**.
3. Balancing makes the number of atoms of each element equal on both sides.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch1 'Chemical Reactions and Equations', §1.1.2_
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