Quiz on Metal Oxides and Their Reduction

What are metal oxides?

• Gases

• Only metals

• Only non-metals

• Compounds of metals and oxygen

What happens during the reduction of metal oxides?

• They become gases

• They become liquids

• They lose oxygen

• They gain oxygen

Which of the following is a metal oxide?

• Sodium chloride

• Carbon dioxide

• Iron oxide

• Water

What is the main purpose of reducing metal oxides?

• To change their color

• To add oxygen

• To remove oxygen

• To make them stronger

Which process is the opposite of reduction?

• Oxidation

• Evaporation

• Condensation

• Sublimation

What is an example of a metal that forms an oxide?

• Gold

• Nitrogen

• Oxygen

• Hydrogen

What is formed when metal oxides are reduced?

• Pure metal

• Gas

• Liquid

• Salt

Which of the following is NOT a metal oxide?

• Copper oxide

• Zinc oxide

• Calcium carbonate

• Lead oxide

What is the result of reducing iron oxide?

• Water

• Oxygen

• Iron

• Carbon dioxide

Why do we study metal oxides?

• To play games

• To make food

• To build houses

• To understand their properties