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Engineering Materials

Engineering Materials
Steel made from phosphate iron is

Tough
Ductile
Brittle
Hard

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Engineering Materials
Delta iron occurs at temperature of

Above melting point
Between 1400°C and 1539°C
Between 910°C and 1400°C
Room temperature

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Engineering Materials
The hardness is the property of a material due to which it

Can be drawn into wires
Can be rolled or hammered into thin sheets
Breaks with little permanent distortion
Can cut another metal

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Engineering Materials
When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

None of these
Less than
More than
Equal to

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Engineering Materials
Age-hardening is related with

Duralumin
Gun metal
German silver
Stainless steel

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Engineering Materials
Which of the following display properties similar to that of steel?

Blackheart cast iron
Whiteheart cast iron
None of these
Both (A) and (B)

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