Design and Communication Technology

Question 1

1Thermoplastics can be

Hard

A. only cast B. only machined C. reshaped when reheated D. reshaped never

Question 2

2MDF is suitable for model making because it

Easy

A. is flexible like rubber B. is metal C. is smooth and easy to cut D. is transparent

Question 3

3Plastics that can be reheated and reshaped are

Easy

A. thermoplastics B. ceramics C. thermosetting plastics D. composites

Question 4

4An alloy of copper and zinc is

Hard

A. brass B. steel C. solder D. bronze

Question 5

5Acrylic is commonly used for

Easy

A. electrical wires B. engine blocks C. roof trusses D. signs and display stands

Question 6

6Acrylic is bent along a line at about

Hard

A. 160 °C using a strip heater B. 20 °C C. 1,000 °C D. 500 °C

Question 7

7Vacuum forming shapes

Easy

A. thin plastic sheet over a mould B. wood C. glass D. metal

Question 8

8Which of these is a thermosetting plastic?

Medium

A. PVC B. acrylic C. melamine formaldehyde D. polyethylene

Question 9

9Hardwoods come from

Hard

A. deciduous broad-leaved trees B. grasses C. conifers D. palms only

Question 10

10Acrylic sheet is often used for

Easy

A. engine blocks B. signs and display stands C. electrical wiring D. roof beams