Materials and Construction

A. Hardness
B. Toughness
C. Tensile strength
D. Wear resistance

A. Bromine
B. Dry chlorine & dry fluorine
C. Nitric acid (95% and fuming)
D. Phosphoric acid (95%) & sulphuric acid (95% and fuming)

A. Tensile strength
B. Softness & flexibility
C. Acid resistance
D. Alkali resistance

A. Sulphuric acid (10%)
B. Sea water
C. Hydrochloric acid
D. None of these

A. Rubber
B. Acrylics
C. Lead
D. Plastics

A. Manganese
B. Carbon
C. Phosphorous
D. Silicon

A. Mainly tin (85%) and lead
B. Saw dust and iron dust mixture
C. Zinc and aluminium
D. Copper and aluminium

A. Has very low strength
B. Cannot be heated
C. Is broken by small temperature changes
D. All A., B. and C.

A. Aluminium
B. High silicon (14%) iron
C. Duralumin
D. Phosphor bronze

A. Wrought iron
B. High speed steel
C. Cast iron
D. Pig iron