1380Mechanical EngineeringMedium
Corrosion resistance of steel is increased by addition of________?
Atungsten, molybdenum, vanadium, chromium
Bvanadium, aluminium
Csulphur, phosphorus, lead
Dzinc
Echromium and nickel
Correct answer
E. chromium and nickel
Explanation
The correct answer is chromium and nickel.