AIIMS 2019 Physics Bernoulli's Theorem MCQ Question

Option C is correct because it accurately represents the principle of conservation of mass in a chemical reaction, where the total mass of reactants equals the total mass of products. This principle is fundamental in stoichiometry, ensuring that the number of atoms for each element remains constant throughout the reaction. The other options may misrepresent the stoichiometric relationships or fail to account for the balancing of chemical equations, leading to an incorrect understanding of mass conservation in chemical processes.