Question 23
Question 23 of 40
Question image for Q23
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

10. Chemistry of the envi...
10.3. Air quality and climate

Describe how the greenhouse gases carbon dioxide and methane cause global warming, limited to: (a) the absorption, reflection and emission of thermal energy (b) reducing thermal energy loss to space