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MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryMole _ Equivalent ConceptAtomic Theory

Which of the following reaction is not according to the law of conservation of mass

A.2Mg(s) + O₂(g)  → 2MgO(s)
B.C₃H₈(g) + O₂(g)  → CO₂(g) + H₂O(g)✓ Correct
C.P₄(s) + 5O₂(g)  → P₄O₁₀(s)
D.CH₄(g) + 2O₂(g)  → CO₂(g) + 2H₂O
Explanation

Number of atoms in the reactant side is not equal to the number of atoms in the product side. Hence, (b) is not a correct reaction.

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