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Engineering Materials

Engineering Materials
Age hardening is related to

Duralumin
Silver
Brass
Copper

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Engineering Materials
Neutral solution is one which has pH value

Greater than 7
pH value has nothing to do with neutral solution
Less than 7
Equal to 7

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

910°C
Below recrystallization temperature
1050°C
770°C

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Engineering Materials
The ability of a material to resist softening at high temperature is known as

Hot hardness
Hot tempering
Fatigue
Creep

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Engineering Materials
The portion of the blast furnace below its widest cross-section is called

Hearth
Stack
Bosh
Throat

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.45 to 0.55%
0.55 to 1.0%
0.05 to 0.20%
0.20 to 0.45%

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