Why does a white painted surface appear white when looked at in daylight?

• A white surface absorbs all waves of light.

• A white surface only partially absorbs all waves of light

• A white painted surface will always appear white regardless of day or night

• A white surface reflects all waves of light

what are the primary colours?

• red, blue, yellow

• purple, orange, green

• red, yellow, green

• red, purple, orange

Which of the following colours is used to identify the contents of the pipe as electrical services?

• 12 D 45

• 08 C 35

• 20 E 51

• 06 E 51

A monochromatic colour scheme is...

• A colour scheme which is harmonious or has pleasing colours closely related to each other on the colour circle.

• A colour scheme based on tints and shades of one colour

• A colour scheme based on any two colours which lie opposite each other on the colour circle

• A colour scheme of different colours in hue, value or chroma when seen together.

Name the international system which permits an accurate verbal description of colour?

• The numeric colour scale.

• BS 4800: 1989 schedule of paint colours for building purposes

• BS 5252: 1976 framework for colour co-ordination for building purposes.

• The Munsell scale

What do mandatory signs imply?

• to make you aware of a hazard

• To tell you not to do something

• To tell you to do something.

• To let you know an area is safe

What colour is a mandatory sign?

• green

• yellow

• red

• blue

what shape is a warning sign?

• triangle

• square

• circle

• rectangle

Name the BS Standard which gives clear identification of contents of pipelines

• BS 4800

• BS 5252

• BS 1710

• BS 5378

the term _____ measures the greyness of a colour, it is measured on a horizontal scale from neutral grey to the pure hue