

MCQOPTIONS
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1. |
Cobalt in steel |
A. | Improves wear resistance, cutting ability and toughness |
B. | Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties |
C. | Improves cutting ability and reduce hardenability |
D. | Gives ductility, toughness, tensile strength and anti corrosion property |
Answer» D. Gives ductility, toughness, tensile strength and anti corrosion property | |