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Which of the following is/are the examples of Hydrogen-evolution poisons?

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Which of the following is/are the examples of Hydrogen-evolution poisons?

(a) Arsenic and Antimony

(b) Sodium sulfite and hydrazine

(c) Chromates and ferric salts

(d) Organic amines

I had been asked this question by my school teacher while I was bunking the class.

The origin of the question is Corrosion Prevention in section Corrosion Prevention of Corrosion Engineering

1 Answer

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Best answer
Correct choice is (a) Arsenic and Antimony

Best explanation: Hydrogen-evolution poisons are the inhibitors that retard the rate of evolution of hydrogen gas in an acidic environment. Arsenic and Antimony are examples of hydrogen-evolution poisons.

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