Chapter 3 of 20 · Chemistry

Gases

Gases is a Chemistry chapter on the official PMDC MDCAT 2026 syllabus, contributing roughly 2 MCQs to the 45-MCQ Chemistry section. Mastering the core concepts below typically secures the full chapter weightage.

Key Concepts

• Boyle's, Charles's, Avogadro's laws
• Ideal gas equation
• Kinetic theory
• Real gas deviations
• Diffusion (Graham's law)

How Gases Is Tested

MDCAT questions on Gases are a mix of recall (definitions, classifications), application (predict outcomes, interpret diagrams), and basic numerical/analytical reasoning. PMDC papers from 2020–2025 emphasized the concepts above; older UHS papers (2008–2019) tested them too, with slight variations in question framing.