Corrosion resistance of steel increases by addition of
- A. Vanadium, aluminium
- B. Sulphur, phosphorus, lead
- C. Chromium and nickel
- D. Tungsten, molybdenum, vanadium, chromium
Answer: C. Chromium and nickel
Explanation: Chromium and Nickel are the primary alloying elements in stainless steel to improve corrosion resistance.