Pick up the wrong statement Nickel and chromium in steel help in _________________?

A. high maehinability
B. low melting point
C. high tensile strength
D. good fluidity
E. all of the above

A. improves wear resistance, cutting ability and toughness
B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant proper¬ties
C. improves cutting ability and reduces hardenability
D. gives ductility, toughness, tensile strength and anticorrosion properties
E. none of the above

A. aluminium
B. low carbon steel
C. medium carbon steel
D. high carbon steel
E. cast iron

A. hot hardness
B. toughness
C. wear resistance
D. sharp cutting edge
E. cold hardness