Composite materials

A composite material is made up of

• A single material

• Two or more separated materials

• Two or more chemically combined materials

• None of these

Which of the following composite material is paired correctly with its uses?

• A

• B

• C

• D

Which of the following are the major constituents of reinforced concrete?

• I, II and III

• I, III and IV

• I, II and IV

• I and II only

Which composite material is used to make skis?

• Optical fibres

• Photochromic glass

• Fibre glass

• Reinforced concrete

Which of the following are the advantages of optical fibre?

• I, II and IV

• I, II and III

• II, III and IV

• I and II only

Which substance is not a composite material?

• Ceramics

• Alloys

• Concrete

• Superconductor

What are the properties of photochromic glass?

The steel bar in reinforced concrete contributes_______ to the concrete.

• Hardness

• Malleability

• Tensile strength

• Compression strength

Fibre glass is stronger than steel.

• True

• False

Usually stronger constituent of a composite is

• Matrix

• Reinforcement

• Both are of equal strength

• None of these