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Cobalt in steel | |
A. | improves wear resistance, cuttin ability and toughness [Wrong Answer] |
B. | refines grain size and produces les tendency to caricaturisation, improve corrosion and heat resistant proper ties [Wrong Answer] |
C. | improves cutting ability and reduce harden ability [Correct Answer] |
D. | gives ductility, toughness, tensil strength and anti corrosion properties: [Wrong Answer] |
E. | none of the above. [Wrong Answer] |