Addition of __________ to steel can not impart it high strength at elevated temperature.

Addition of __________ to steel can not impart it high strength at ele

1.	Addition of __________ to steel can not impart it high strength at elevated temperature.
A.	nickel
B.	magnesium
C.	silicon
D.	manganese
Answer» C. silicon

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Addition of __________ to steel can not impart it high strength at elevated temperature.

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