ENGINEERING MATERIALS QUIZ

Solder is an alloy consisting of

Tin and copper

Lead and zinc

Tin and lead

Tin, antimony, copper

TRUE ANSWER : ?
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The charge of the blast furnace consists of

Calcined ore (4 parts), coke (1 part) and limestone (8 parts)

Calcined ore (1 part), coke (8 parts) and limestone (4 parts)

Calcined ore (8 parts), coke (4 parts) and limestone (1 part)

Calcined ore, coke and limestone all in equal parts

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Silicon when added to copper improves

Machinability

Strength and ductility

Hardness

Hardness and strength

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Mild steel belongs to the following category

Low carbon steel

Alloy steel

Medium carbon steel

High carbon steel

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Tensile strength of steel can be safely increased by

Adding carbon up to 0.83%

Adding carbon up to 2.8%

Adding carbon up to 6.3%

Adding small quantities of copper

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An eutectoid steel consists of

Pearlite and cementite

Pearlite and ferrite

Wholly pearlite

Wholly austenite

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In nodular iron, graphite is in the form of

Flakes

Spheroids

Free carbon

Cementite

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The cupola is used to manufacture

Cast iron

Wrought iron

Pig iron

Steel

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Lead is poured into the joint between two pipes. These pipes may be made of

Vitrified clay

Asbestos cement

Cast iron

Concrete

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Pearlite consists of

13% cementite and 87% ferrite

13% carbon and 87% ferrite

6.67% carbon and 93.33% iron

13% ferrite and 87% cementite

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