Question 21
Question 21 of 40
Question image for Q21
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
7. Equilibria
7.2. Brønsted–Lowry theory of acids...

explain qualitatively the differences in behaviour between strong and weak acids including the reaction with a reactive metal and difference in pH values by use of a pH meter, universal indicator or conductivity

4. States of matter
4.1. The gaseous state: ideal and r...

explain the origin of pressure in a gas in terms of collisions between gas molecules and the wall of the container