COLOURING TECHNIQUES - Practice Mode

1) What is anodising?

Anodic oxidation of aluminium Cathodic oxidation Aluminium oxidation and reduction Cathodic protection and reduction

Correct Answer: Anodic oxidation of aluminium

Explanation:

Anodising is an electrolytic process for producing thick oxide coatings, usually on aluminium and its alloys. The oxide layer is typically 5 to 30µm in thickness and is used to give improved surface resistance to wear and corrosion, or as a decorative layer.

2) What is the purpose of anodising?

Resistance to corrosion Conductivity Increase density Cleaning the surface

Correct Answer: Resistance to corrosion

3) Which solution is used for anodized coating?

Hydrochloric acid Hydrofloric acid Sulphuric acid Carbonic acid

Correct Answer: Sulphuric acid

4) Which type of coating is to be done on the article before colouring?

Anodizing Painting Dipping Phosphating

Correct Answer: Anodizing

5) Which process is used for colour effect on the article ?

Stopping of process Cleaning process Dipping process Pickling process

Correct Answer: Stopping of process

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