What is the primary component of steel?

• Carbon

• Iron

• Nickel

• Chromium

Tags

NGSS.MS-PS1-1

Which process is used to remove impurities from iron to make steel?

• Smelting

• Refining

• Bessemer process

• Annealing

What property of steel makes it suitable for construction?

• High electrical conductivity

• High tensile strength

• Low density

• High thermal expansion

Which element is added to steel to increase its corrosion resistance?

• Carbon

• Sulfur

• Chromium

• Phosphorus

What is the typical carbon content in mild steel?

• 0.05% to 0.25%

• 0.5% to 1.5%

• 2% to 4%

• 5% to 10%

Which type of steel is known for its ability to be easily welded?

• Stainless steel

• Tool steel

• Mild steel

• High-speed steel

What is the effect of adding nickel to steel?

• Increases hardness

• Improves ductility

• Reduces weight

• Increases brittleness

Tags

NGSS.HS-PS2-6

Which of the following is a common use of stainless steel?

• Electrical wiring

• Food processing equipment

• Automobile tires

• Wooden furniture

Tags

NGSS.HS-PS2-6

What is the role of manganese in steel production?

• Increases brittleness

• Improves hardness and strength

• Reduces melting point

• Increases electrical conductivity

Which test is used to measure the hardness of steel?

• Tensile test

• Charpy test

• Brinell test

• Impact test