Chemical Technology N6 December Past Papers and Memos

1. Q1 Drying1.1 Name TWO drying processes. (2) 50 marks
2. Q2 Crystallisation2.1 Spurious nucleation is one of the methods to be avoided during the formation 35 marks
3. Q3 Heat Transfer3.1 State Fourier's law of heat transfer by conduction. (6) 50 marks
4. Q4 Evaporation4.1 Briefly explain the difference between evaporation, distillation and 23 marks
5. Q5 Humidification and De-Humidification5.1 Briefly explain the operation of a natural-draught cooling tower. (10) 42 marks

Instructions to candidates

1. Answer all the questions.
2. Read all the questions carefully.
3. Number the answers according to the numbering system used in this question paper.
4. Start each section on a new page.
5. Use only a black or blue pen.
6. Write neatly and legibly. (15040106) -3-