What is the primary element in ferrous metals?

• Copper

• Iron

• Aluminum

• Zinc

Which type of steel contains the highest percentage of carbon?

• Medium Carbon Steel

• Low Carbon Steel

• High Carbon Steel

• Stainless Steel

What is the main purpose of heat treatment in metals?

• To reduce size

• To change color

• To alter properties and characteristics

• To increase weight

Which of the following is a non-ferrous metal?

• Tool Steel

• Copper

• Stainless Steel

• Cast Iron

What is the process of increasing the hardness of steel by adding carbon called?

• Normalizing

• Annealing

• Tempering

• Hardening

Which type of stainless steel is known for being non-magnetic?

• Ferritic

• Austenitic

• Tool Steel

• Martensitic

What is the primary use of low carbon steel?

• High-strength applications

• General purpose material

• Cutting tools

• Biomedical applications

What is the main component used in the extraction of iron in a blast furnace?

• Limestone

• Coke

• Charcoal

• Sand

Which of the following metals is a pure metal?

• Bronze

• Iron

• Stainless Steel

• Brass

What is the purpose of case hardening?

• To improve electrical conductivity

• To reduce weight

• To give a hard skin to mild steel

• To increase ductility