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The specific volume ratios of W, Cr and Ni are 3.6, 2.0 and 1.6 respectively. Which of them will have the least rate of corrosion?

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The specific volume ratios of W, Cr and Ni are 3.6, 2.0 and 1.6 respectively. Which of them will have the least rate of corrosion?

(a) Ni

(b) Cr

(c) W

(d) All will have the same rate of corrosion

The question was posed to me in unit test.

My doubt stems from Factors Influencing Corrosion topic in chapter Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II

1 Answer

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Best answer
Right choice is (c) W

Best explanation: W will have the least rate of corrosion, even at higher temperatures because the specific volume ratio is inversely proportional to the rate of corrosion.

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