See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

The V.D. and molar mass of the emergent gas will always be greater than that of pure gas.  In case of   1 3 CH OH molar mass 32 g mol and acetone (molar mass 58 1 g mol)  Molar mass of 1 2 N being 28 g mol  Molar mass of 1 2 H O being 18 g mol.  Molar mass of 1 2 D O being 20 g mol.