Question

Choose out the odd one:

• A. Haematite: Iron
• B. Malachite: Copper
• C. Solder: Tin
• D. Bauxite: Aluminium

Answer 1

Answer:

C. Solder: Tin

In all other pairs, second is the name of the metal of which the first is an ore. On the other hand, solder is an alloy.