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MHT CET Medical202621 April 2026Morning ShiftChemistrySome Basic Concepts of ChemistryActual

Which of the following gases has high vapour density at same temperature and pressure?

Options

  1. AH ₂
  2. BO ₂
  3. CCl ₂
  4. DCH ₄

Correct answer

C. Cl ₂

Step-by-step solution

Vapour density is directly proportional to the molar mass of the gas, as Vapour Density = Molar Mass 2 . Calculating the molar mass for each given gas: H ₂ = 2 g/mol O ₂ = 32 g/mol Cl ₂ = 71 g/mol CH ₄ = 16 g/mol Since Cl ₂ has the highest molar mass, it has the highest vapour density. Answer: Cl ₂

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