1990 - WAEC Chemistry Past Questions and Answers - page 4
31
The following metals are extracted by the electrolytic method except
A
potassium
B
calcium
C
sodium
D
tin
correct option: d
Users' Answers & Comments32
Petrol can be obtained from diesel by
A
distillation
B
cracking
C
catalysis
D
polymerization
correct option: b
Users' Answers & Comments