NEET 2025 · ChemistryPrevious Year Question
Dalton's atomic theory could \emph{not} explain which of the following?
- A.Law of multiple proportions
- B.Law of gaseous volumes✓
- C.Law of conservation of mass
- D.Law of constant proportions
Correct Answer
(B) Law of gaseous volumes
Solution & Explanation
\textbf{Answer:} (B) Law of gaseous volumes \textbf{Solution:} Dalton's atomic theory explains the laws of conservation of mass, constant (definite) proportions and multiple proportions. It could not explain Gay-Lussac's law of combining gaseous volumes, which was later accounted for by Avogadro's hypothesis (equal volumes of gases at the same T and P contain equal numbers of molecules).
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