Materials and Their Uses

What is the most common metal used in construction?

• Steel

• Iron

• Copper

• Aluminum

Answer explanation

Steel is the most common metal used in construction due to its strength, durability, and versatility in various applications.

Which type of plastic is commonly used in water bottles?

• Polyethylene terephthalate (PET)

• Polypropylene (PP)

• Polystyrene (PS)

• Polyvinyl chloride (PVC)

Answer explanation

Polyethylene terephthalate (PET) is commonly used in water bottles, making it the correct choice.

What type of wood is often used for furniture making due to its durability?

• Birch

• Maple

• Oak

• Pine

Answer explanation

Oak is often used for furniture making due to its durability, making it the correct choice in this case.

What is the main component of glass?

• Calcium carbonate (CaCO3)

• Carbon dioxide (CO2)

• Silicon dioxide (SiO2)

• Aluminum oxide (Al2O3)

Answer explanation

The main component of glass is Silicon dioxide (SiO2), which is responsible for its transparency and strength.

What is the process of heating ceramics to high temperatures to make them hard and durable called?

• Freezing

• Roasting

• Firing

• Baking

Answer explanation

The process of heating ceramics to high temperatures to make them hard and durable is called firing. It involves subjecting the ceramics to controlled heating in a kiln to achieve the desired properties.

Which fabric is known for its softness and breathability?

• Silk

• Polyester

• Nylon

• Cotton

Answer explanation

Cotton is known for its softness and breathability, making it the correct choice among the given options.

What metal is known for its resistance to corrosion?

• Aluminum

• Copper

• Gold

• Stainless steel

Answer explanation

Stainless steel is known for its resistance to corrosion, making it the correct choice among the options provided.

Which type of plastic is commonly used in food packaging?

• Polyethylene terephthalate (PET)

• Polystyrene

• Polypropylene (PP)

• Polyvinyl chloride (PVC)

Answer explanation

Polyethylene terephthalate (PET) is commonly used in food packaging due to its durability, transparency, and ability to be recycled.

What type of wood is often used for making musical instruments?

• Bamboo

• Plastic

• Hardwood

• Softwood

Answer explanation

Hardwood is often used for making musical instruments due to its durability and resonance qualities, making it a popular choice among instrument makers.

What is the main ingredient in ceramic pottery?

• Sand

• Clay

• Metal

• Water

Answer explanation

The main ingredient in ceramic pottery is clay, as it is the material that is molded, shaped, and fired to create pottery items.