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प्रश्न
Which of the following reactions is NOT correct according to the law of conservation of mass?
पर्याय
\[\ce{2Mg_{(s)} + O2_{(g)} -> 2MgO_{(s)}}\]
\[\ce{C3H8_{(g)} + O2_{(g)} -> CO2_{(g)} + H2O_{(g)}}\]
\[\ce{P4_{(s)} + 5O2_{(g)} -> P4O10_{(s)}}\]
\[\ce{CH4_{(g)} + 2O2_{(g)} -> CO2_{(g)} + 2H2O_{(g)}}\]
MCQ
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उत्तर
\[\ce{C3H8_{(g)} + O2_{(g)} -> CO2_{(g)} + H2O_{(g)}}\]
Explanation:
According to the law of mass conservation,
Total mass of reactants = Total mass of products
\[\ce{\underset{44 g}{C3H8_{(g)}} + \underset{32 g}{O2_{(g)}} -> \underset{44 g}{CO2_{(g)}} + \underset{18 g}{H2O_{(g)}}}\]
The law of conservation of mass is broken here.
i.e., Mass of reactants ≠ Mass of products
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