Question

Which of the following processes is used for surface treatment of metals?

• A. Soldering
• B. Thermoplating
• C. Extrusion
• D. Riveting

Hint:

Surface treatment techniques include plating, anodizing, coating, and others aimed at improving surface properties without changing internal structure.

Answer 1

The Correct Option is B

Step 1: Understanding surface treatment.
Surface treatment involves modifying the surface of a material to achieve improved appearance, corrosion resistance, wear resistance, or other properties.

Step 2: Analyze the options.
Soldering and riveting are joining processes, not surface treatments. Extrusion is a bulk deformation process used to shape metals. Thermoplating, on the other hand, is a surface treatment method in which a metal is coated with another by applying heat.

Step 3: Conclusion.
Among the options, thermoplating is specifically used for surface treatment of metals.

Final Answer: Thermoplating