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Which statement contradicts the law of conservation of mass in an ordinary chemical reaction?

Answer and explanation

Correct answer: Matter disappears on its own during an ordinary chemical reaction.

The correct answer is C. In an ordinary chemical reaction, matter is not created or destroyed; in a closed system, the total mass before and after the reaction is the same. So the claim that matter disappears contradicts mass conservation.

Related tags

ChemistryConservation Of MassChemical ReactionsLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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