Galvanizing coats steel with zinc for rust protection

Steps:

• Recall galvanizing definition: process of applying zinc coating to steel to prevent corrosion.
• Evaluate statement 1: false, as galvanizing adds a zinc layer, not forming a steel alloy.
• Evaluate statement 2: true, zinc acts as sacrificial anode, corroding preferentially to protect steel.
• Evaluate statement 3: true, involves dipping steel in molten zinc for coating.

Why C is correct:

• Galvanizing provides sacrificial protection (statement 2) by coating zinc (statement 3), per electrochemical corrosion principles where zinc oxidizes before iron.

Why the others are wrong:

• A includes false statement 1 about alloy formation.
• B includes false statement 1 and omits true sacrificial protection.
• D includes false statement 1 about alloy formation.

Final answer: C