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Which of the following readily sublime and form a protective layer on the metal surface?

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in Engineering Chemistry II by (789k points)
Which of the following readily sublime and form a protective layer on the metal surface?

(a) Anodic inhibitor

(b) Cathodic inhibitor

(c) Volatile inhibitors

(d) Non-volatile inhibitors

The question was asked in a national level competition.

This interesting question is from Protective Measures Against Corrosion in portion Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II

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Best answer
Right option is (c) Volatile inhibitors

The best explanation: Volatile or vapour-phase inhibitors readily sublime and form a protective layer on the metal surface.

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