Question

An alloy which does not contain copper is-

• A. Magnalium
• B. Bronze
• C. Brass
• D. German Silver

Answer 1

The correct option is A

Magnalium

Due to its non-reactive nature and corrosion-resistant properties, Copper ($Cu$) is widely used to make alloys.

To answer this, we should look into the composition of each of the alloys.

Explanation for correct option:

A) Magnalium: It is an alloy of 5% Magnesium ($Mg$) and 95% Aluminum ($Al$). Hence no Copper ($Cu$) is present.

Explanation for incorrect options:

B) Bronze: Bronze is an alloy of Copper ($Cu$) and Tin ($Sn$). It also sometimes contains other metals like Zinc ($Zn$) or Aluminum ($Al$).

C) Brass: Brass is an alloy of Copper ($Cu$) and Zinc ($Zn$) whose proportion is varied to achieve the desired physical and chemical properties of the alloy.

D) German Silver: It is an alloy of Copper ($Cu$), Zinc ($Zn$), and Nickel ($Ni$) but sometimes Tin ($Sn$) and Lead ($Pb$) are also present.

Therefore, the correct answer is (A) Magnalium.