O-LevelChemistryBonding & Structure5070/11 · May/June 2016 · Q141 Mark

Gases can diffuse through porous pots. The diagram shows a beaker full of nitrogen inverted over a porous pot containing carbon monoxide. The water level does not move. Which statement explains this?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

ANitrogen is almost inert.

BThe two gases have equal molecular masses.

CBoth gases have two atoms in a molecule.

DNeither gas is soluble in water.

✓ Correct answer

B: The two gases have equal molecular masses.

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2016 Paper 1 Variant 1, question 14.

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