AIIMS 2019 Chemistry Reaction Mechanisms MCQ Question

Option A is correct because it accurately represents the stoichiometry of the reaction, balancing the reactants and products according to the law of conservation of mass. In contrast, the other options do not reflect the correct ratios or chemical species involved in the reaction, leading to discrepancies in the overall equation. For instance, if the reaction involves the formation of water (H₂O) and carbon dioxide (CO₂), any option that misrepresents these products or their quantities would be incorrect. Understanding the balance of chemical equations is crucial for predicting the outcomes of reactions and ensuring that all atoms are accounted for.