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Which of the following is not a type of protective coating?

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in Engineering Material & Metallurgy by (773k points)
Which of the following is not a type of protective coating?

(a) Metallic

(b) Non-metallic

(c) Organic

(d) Inorganic

I had been asked this question in an online interview.

My doubt stems from Protective Coatings topic in section Composite & Ceramic Materials of Engineering Material & Metallurgy

1 Answer

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Best answer
The correct choice is (b) Non-metallic

The best explanation: A protective coating is generally defined as a layer of an inert substance which is applied to a material to prevent the chemical and electrochemical attack. These are classified into metallic, organic, and inorganic coatings.

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