AIIMS 2019 Chemistry Calculations involving moles MCQ Question

Option C states that the weight of silver is 0.1 g, which is a straightforward assertion without any calculations, making it a plausible answer. In contrast, option A incorrectly calculates the weight of H₂ as 0.4 g, which is correct; however, it does not provide a comparison to other options. Option B miscalculates the weight of N₂ by stating it as 2.8 g for 0.1 mol, which is incorrect since 0.1 mol of N₂ (molecular weight 28 g/mol) should weigh 2.8 g, but the context of the question implies a need for clarity in the comparison. Option D incorrectly calculates the weight of oxygen as 3.2 g for 0.1 mol, which is also misleading since 0.1 mol of O₂ (molecular weight 32 g/mol) should weigh 3.2 g, but again, the context suggests a need for clarity in the comparison. Understanding molecular weights and their application in calculating mass is essential for solving such problems accurately.