CANDIDATES' WEAKNESSES
Candidates
- could not calculate number of moles;
- could not give the colour change that would be observed when ZnCO3 is heated strongly and left to stand for a few minutes;
- could not suggest the name of a compound based on the quantitative analysis of the compound;
- inability to round off their answers to 3 significant figures.
The following remedies were suggested:
candidates should
- be familiar with the examination syllabus;
- improve on their study habit;
- learn how to write the correct charges on ions;
- learn how to deduce correct inferences from observation.