Question 4
 A direct current of 10 A is passed through a voltameter continuously for 1 hour in order to deposit m grammes of a metal of electrochemical equivalent 1.2 x 10-7 kg C-1. Calculate m.
A popular question among the candidates and most candidates got the formular and substitution correctly.  However, few candidates had problem on how to convert the unit from gramme (g) to kilogramme (kg).  Another huddle was the handling of the multiplication of numbers in index notation and standard form.