Materials and CAD Quiz

What are the 4 Main types of Materials?

• Metals, Polymers, Plastics, Ceramics

• Metals, Polymers, Ceramics, Composites

• Polymers, Plastics, Wood, Metals

• Plastics, Composites, Wood, Polymers

Answer explanation

The 4 main types of materials are Metals, Polymers, Plastics, and Ceramics. These materials have different properties and uses in various industries.

The following is a general property of most metals?

• Low melting point

• Non-malleable

• Malleable

• Weak

Answer explanation

Most metals are malleable, meaning they can be hammered or pressed into different shapes without breaking.

Ferrous metals contain iron and are generally magnetic?

• True

• False

Answer explanation

Ferrous metals contain iron and are magnetic. True is the correct choice.

If a metal is malleable, it can:

• Never break

• Can be drawn into a wire

• Can be bent or hammered into different shapes

• Contains lead

Answer explanation

A malleable metal can be drawn into a wire or bent/hammered into different shapes. This property allows for flexibility and versatility in its use.

If a metal is said to be ductile, then it can be:

• Drawn into wires

• Bent or hammered into different shapes

• Never break

• Full of lead

Answer explanation

A ductile metal can be drawn into wires and bent or hammered into different shapes.

Which type of plastic is used in making bottles?

• Polyethylene (PE)

• Polyproplyne (PP)

• Polyamide (PA)

• Polyethylene Terephthalate (PET)

Answer explanation

Polyethylene Terephthalate (PET) is the type of plastic used in making bottles.

Which Plastic is used in glasses is solid and transparent?

• Polycarbonate (PC)

• Polyproplyne (PP)

• Polyamide (PA)

• Polyethylene Terephthalate (PET)

Answer explanation

Polycarbonate (PC) is the plastic used in glasses. It is solid and transparent, making it the correct choice.

Thermoset plastics once heated and put into shape cannot be reshaped again.

• True

• False

Answer explanation

Thermoset plastics, once heated and shaped, cannot be reshaped again. This makes the statement 'True' the correct choice.

Thermoplatics can be recyclable.

• True

• False

Answer explanation

Thermoplastics are recyclable, making the statement 'True' the correct choice.

Generally Soft Woods are Deciduous Trees (Trees that lose their leaves).

• True

• False

Answer explanation

Soft woods are generally deciduous trees, meaning they lose their leaves. Therefore, the correct answer is True.