AIIMS 2019 Chemistry Carboxylic Acids and Derivatives MCQ Question

Option A is correct because it accurately represents the stoichiometry of the complete reaction, balancing the reactants and products according to the law of conservation of mass. In contrast, options B, C, and D either misrepresent the number of molecules involved or fail to account for all products formed, such as H₂O or CO₂, leading to an incorrect depiction of the reaction's outcome. Understanding the balance of chemical equations is crucial, as it reflects the precise ratios in which substances react and are produced.