Question

___________ is/are an alloy of aluminium.

• A. Duralumin
• B. Magnalium
• C. Alnico
• D. All of these

Answer 1

Answer: (D)

All of these

Magnalium is an aluminium alloy with magnesium. Duralumin, strong, hard, light weight alloy of aluminium, widely used in aircraft construction, discovered in 1906. Alnico is an acronym referring to a family of iron alloys which in addition to iron are composed primarily of aluminium ($Al$), nickel ($Ni$) and cobalt ($Co$), hence Al-ni-Co.