Plastics and Finishing Works

Which among the following is not a Disadvantage in using Plastic as a building material?

• Low strength

• Becomes brittle over time

• Light weight

• Sensitive to chemicals

Thermosetting plastics is described as it can be bended or soften through the use of heat.

• True

• False

Which of the following is a characteristic of thermoplastics?

• They are more expensive than metals

• They harden permanently after cooling

• They are always opaque

• They can be reshaped multiple times with heat

Identify the material used on the roofs

• Wooden shingles
• Thatch roofing
• Metal panels
• Translucent polycarbonate or acrylic sheets

What type of plastic is shown in the picture?

• PVC (Polyvinyl Chloride)
• PP (Polypropylene)
• PS (Polystyrene)
• PE (Polyethylene)

Which of the following is an advantage in using PVC as a building material?

• Production causes pollution

• Waterproof

• Low strength

• Cannot be used at high temperature

What is the primary use of polyethylene in construction?

• Insulation

• Waterproofing

• Structural support

• Electrical wiring

What is a common application of polystyrene in construction?

• Electrical conduits

• Structural beams

• Insulation

• Waterproofing membranes

Which of the following is a disadvantage of using thermoplastics in construction?

• Low impact resistance

• High density

• High melting point

• Susceptibility to UV degradation

Which type of plastic is known for its rigidity and is often used in pipes?

• Polypropylene

• Polyethylene

• Polystyrene

• Polyvinyl Chloride (PVC)