OnlineCBT
Chemistry · Some Basic Concepts of Chemistry
हिन्दीConsider the following statements: (A) A balanced chemical equation obeys the law of conservation of mass. (B) The reactant that is present in the smallest amount is always the limiting reagent. (C) One mole of carbon dioxide contains \( 6.022 \times 10^{23} \) molecules of \( \text{CO}_2 \). (D) Empirical formula mass is always equal to molecular mass. Which of the above statements are correct?
Correct answer · Option 1
(A) and (C) only
Explanation
(A) and (C) are correct. (B) is false because limiting reagent depends on stoichiometric mole ratios, not absolute amounts. (D) is false because molecular mass is an integral multiple of empirical formula mass.
