The only metal that is anti-bacterial is?
A
Iron
B
Sodium
C
Alluminium
D
Copper
Verified Correct Answer: D.
Chemical Principles & Mechanism
Aluminium sulfate is a salt soluble in water and is mainly used as a coagulating agent in the purification of drinking water.
Copper demonstrated the greatest antimicrobial activity. The silver coatings demonstrated the second most antimicrobial surface.
Source: WAEC / JAMB / NECO Classroom Archive (Record #60513)