Chemistry Paper 2 (Practical), WASSCE (PC 1ST), 2020

CANDIDATES’ WEAKNESSES

Candidates could not:

  • State one main source of sulphur (IV) oxide used in contact process;
  • Name one catalyst used in contact process;
  • Write the equation for the reaction in the absorption tower;
  • Write the formula of sodium trioxonitrate (V) decahydrate
  • Write the formula of potassium tetraoxosulphate (V);
  • List two uses of producer gas;
  • State one similarity between saponification and neutralization reactions

 

The following remedies were however suggested.

Candidates should:

  • Understand the demands of the questions before responding to them;
  • Learn to explain concepts using appropriate technical terms;
  • Learn to answer questions on reaction schemes;
  • Read and understand the rubrics of the questions before responding to them;.