CANDIDATES’ WEAKNESSES

Candidates could not:

-           list three deductions that can be made from the qualitative and quantitative analysis of an organic compound;
-           state what would be observed when concentrated hydrochloric acid reacts with K2Cr2O7;
-           write a balanced chemical equation to show the acidic nature of C2H2 when reacted with sodium;
-           describe the processes involved in the purification of water for human consumption;
-           describe one effect of acid rain on building.

            The following remedies were however suggested:

            Candidates should

-           understand the demands of the questions before responding to them;
-           improve on their mathematical skill;
-           ensure coverage of the syllabus before the commencement of examination;
-           know the difference between naming of compounds and writing of formulae;
-           learn how deduce the structures of compounds from reaction schemes.