Materials

Question 1

Which of the following metals should not be uses outdoors without a protective coating of a different material?

Aluminium alloy
Copper
Low carbon steel
Zinc

Answer 1

Low carbon steel

Question 2

Which one of the statements is true?

Balsa is a natural material used in moled making.
MDF is a man made material commonly used for outdoor furniture.
Silk is a man made material used in the textiles industry.
Urea Formaldehyde is a natural material used to manufacture electrical sockets.

Answer 2

Balsa is a natural material used in model making

Question 3

Properties - Good resistance to weathering, scratches easily
Uses - Car light units, bath tubs, shop signage and displays

Answer 3

Acrylic

Question 4

PMMA

Answer 4

Acrylic

Question 5

HIPS

Answer 5

High-impact polystyrene

Question 6

HDPE

Answer 6

High-density polythene

Question 7

PP

Answer 7

Polypropylene

Question 8

PVC

Answer 8

Polyvinyl chloride

Question 9

PET

Answer 9

Polyethylene terephthate

Question 10

MF

Answer 10

Melamine formaldehyde

Question 11

PF

Answer 11

Phenol formaldehyde

Question 12

Properties - electrical insulator, chemical and wear resistance
Uses - Adhesives such as araldite

Answer 12

Epoxy resin