Question 3 (Material and selection for equipment design) a. Define and differentiate between alloy and composite materials. Give three (3) examples for each material. (6 marks) b. Describe briefly the effect of high and low temperatures on the properties of materials and give three (3) suitable materials for high and low temperatures, respectively. (10 marks) c. Methyl ethyl ketone (MEK) is manufactured by the dehydrogenation of 2-butanol using a shell and tube type reactor. Flue gases are used for heating and passing through the tubes. The flue gases will contain traces of sulphur dioxide. The reaction products include hydrogen. The reaction takes place in the shell at a pressure of 3 bar and a temperature of 500C. Select the suitable materials for the tubes and shell and justify your answer. (9 marks)