Material Theory

Question 1

What type of material is melamine formaldehyde?

Answer 1

Melamine formaldehyde is a thermosetting plastic

Question 2

Name 3 properties of melamine formaldehyde

Answer 2

Heat resistant polymer
Non-conductive electrical insulator
Smooth and hygienic

Question 3

Name 2 applications of melamine formaldehyde

Answer 3

Any two of following:

Electrical sockets, tableware, decorative lamentations and synthetic resin paints

Question 4

What type of material is Acrylic?

Answer 4

Acrylic is a type of thermoplastic.

Question 5

Name 3 properties of acrylic.

Answer 5

Any 3 of following:

Hard wearing
Can be transparent or opaque
Can be coloured
Can shatter

Question 6

Name 2 applications of acrylic.

Answer 6

Any two of following:

Display signs, baths, roof lights and machine guards

Question 7

What type of material is PVC?

Answer 7

PVC is a thermoplastic.

Question 8

Name 3 properties of PVC

Answer 8

Tough
Can be rigid or flexible
Water resistant

Question 9

Name 2 applications for PVC

Answer 9

Any two of following:

Water piping, rain coats, plastic bottles

Question 10

What type of material is polyester resin?

Answer 10

Polyester resin is a thermosetting plastic.

Question 11

Name 3 properties of polyester resin

Answer 11

Any 3 of following:

Polymerises at room temperature
Durable
Impact-resistant
Non-recyclable

Question 12

Name 2 applications of polyester resin

Answer 12

Any two of following

Car bodies, glass-reinforced plastics (GRP) castings, boats

Question 13

What type of material is mahogany?

Answer 13

Mahogany is a hardwood

Question 14

Name 3 properties of mahogany

Answer 14

Any 3 of following:

Expensive
Imported
Decorative
Strong
Medium weight
Difficult grain

Question 15

Name 2 applications of mahogany.

Answer 15

Any two of following:

Furniture, doors, staircases and veneers.

Question 16

What type of material is ABS?

Answer 16

ABS is a thermoplastic.

Question 17

Name 3 properties of ABS

Answer 17

Any 3 of following:

Impact resistant, tough, light, glossy, expensive, electrical insulator, good in injection moulding

Question 18

Name 2 applications for ABS

Answer 18

Any two of following:

Lego bricks, protective headgear, protective carrying cases, golf club heads.

Question 19

What type of material is mild steel?

Answer 19

Mild steel is a ferrous metal

Question 20

Name 3 properties of mild steel.

Answer 20

Any 3 of following:

Most common metal, softest metal, relatively cheap, strong, rusts easily, cannot be tempered

Question 21

Name 2 applications of mild steel.

Answer 21

Any two of following:

Nuts and bolts, stool legs, cars, washing machines.

Question 22

What type of material is carbon steel?

Answer 22

Carbon steel is a ferrous metal alloy.

Question 23

Name 3 properties of carbon steel.

Answer 23

Any 3 of following:

Harder than mild steel can be tempered and hardened, will rust, difficult to work.

Question 24

Name 2 applications of carbon steel.

Answer 24

Any two of following:

Saws, files, chisels, drill bits.

Question 25

What type of material is pine?

Answer 25

Pine is a softwood

Question 26

Name 3 properties of pine.

Answer 26

Any 3 of following: Fine and even texture, variations of colour, long and wide boards, few knots, prone to twisting.

Question 27

Name 2 applications of pine.

Answer 27

Staircases and window sills.

Question 28

What type of material is urea formaldehyde?

Answer 28

Urea formaldehyde is a thermosetting plastic.

Question 29

Name 3 properties of urea formaldehyde.

Answer 29

Colourless polymer, can be coloured with pigments, electrical insulator.

Question 30

Name 2 applications of urea formaldehyde

Answer 30

Electrical fittings and switches, cupboard and door handles.

Question 31

What type of material is stainless steel?

Answer 31

Stainless steel is a ferrous metal alloy.