Question 1
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Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
1. States of matter
1.1. Solids, liquids and gases

Describe the effects of temperature and pressure on the volume of a gas

6. Chemical reactions
6.3. Reversible reactions and equil...

State the sources of the hydrogen (methane) and nitrogen (air) in the Haber process

1. States of matter
1.2. Diffusion

Describe and explain the effect of relative molecular mass on the rate of diffusion of gases