Question 39
Metals and their CompoundsDuralumin consists of aluminium, copper,
- A.zinc and gold
- B.lead and manganese
- C.nickel and silver
- D.manganese and magnesium.
Show the answer and explanation
Answer: D (manganese and magnesium.)
Explanation
Duralumin is a light, strong alloy of mainly aluminium with small amounts of copper, manganese and magnesium; it is used in aircraft.