Metallurgy Quiz

Which is the main ore of iron?

• Bauxite

• Argentite

• Pyrite

• Hematite

Which metal is found in pure state in nature?

• Aluminium

• Iron

• Copper

• Gold

Which is the primary step of purifying metal?

• Smelting

• Roasting

• Grinding

• Concentration

Which of the following ore is oxidised by roasting method?

• Hematite

• Siderite

• Bauxite

• Cuprite

In which process is smelting included?

• Grinding

• Refining

• Oxidation

• Reduction

Which is the least reactive and found in native state?

• Silver

• Iron

• Aluminium

• Gold

What are the sources of metals?

• Fossil fuels

• Water

• Plants

• Minerals and ores

What is the correct stepwise process of metallurgy?

• Concentration → Reduction → Refining

• Roasting → Refining → Oxidation

• Refining → Smelting → Reduction

• Concentration → Oxidation → Reduction → Refining

In electro-refining of copper, what is deposited on the cathode?

• Anode mud

• Oxygen gas

• Iron oxide

• Pure copper

Which process converts sulphide ores to oxides?

• Calcination

• Smelting

• Refining

• Roasting