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Engineering Materials

Engineering Materials
Eutectoid reaction occurs at

723°C
1147°C
1493°C
600°C

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Engineering Materials
Following elements have face-centered cubic structure

Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
All of these
Mg, Zn, Ti, Zr, Br, Cd
A iron (below 910°C and between 1400 to 1539°C), W

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Engineering Materials
High carbon steel carries carbon percentage

0.1 to 0.3%
0.6 to 0.8%
0.3 to 0.6%
0.8 to 1.5%

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Engineering Materials
Phosphor bronze contains

0.5% of phosphorous
1% phosphorous
None of these
2.5% phosphorous

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Engineering Materials
Basic solution is one which has pH value

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

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Engineering Materials
Which of the following metal shrinks most from molten state to solid state?

Brass
Cast steel
Admiralty metal
Cast iron

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