problem 1:

Discuss the mechanism of the chemical corrosion. Discuss the role of oxide film in chemical corrosion and classify them.

problem 2:

Illustrate out the term corrosion inhibitors? Make a distinction between anodic and Cathodic inhibitors.

problem 3:

Illustrate out the preliminary treatment given to metallic surface before coating.

problem 4:

prepare down the importance of Gibb’s phase rule? Describe its applications and limitations.

problem 5:

prepare down short note on structure of the graphite and its use as a lubricant.

problem 6:

How do viscosity and viscosity index affect the selection of the lubricants for particular purpose?