Q. Which of the following is/are the preventions of dezincification?

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Q. Which of the following phenomenon that results in the dissolution of iron by leaving porous graphite on the surface of grey cast iron?

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Q. Which of the following type of cast irons that exhibits graphitization?

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Q. Which of the following acid that results in selective removal of aluminum in aluminum bronzes?

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Q. Which of the following is/are the other names of selective leaching?

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Q. Which of the following is/are the benefits of selective leaching?

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Q. Erosion corrosion accelerates the rate of attack on a metal because of relative movement between corrosive fluid and the metal surface.

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Q. Which of the following type of directional patterns usually exhibit by erosion-corrosion?

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Q. Erosion corrosion results when the protective oxide films are damaged and the metal or alloy are attacked at a rapid rate.

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Q. Which of the following metals is/are susceptible to erosion-corrosion?

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Q. Which of the following type of equipment is/are highly prone to erosion-corrosion?

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Q. Which of the following is/are the characteristics of oxide film that exhibits better resistance to erosion-corrosion?

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Q. Which of the following characteristics of titanium, makes it resistant to erosion-corrosion?

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Q. Which of the following metal is resistant to seawater, chlorides, and fuming nitric acid?

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Q. Which of the following environmental factor plays an important role in erosion-corrosion?

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Q. Define critical velocity regarding erosion-corrosion.

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Q. Which of the following metal shows a decrease in corrosion attack with an increase in velocity in fuming nitric acid?

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Q. Which of the following is/are the preventions of erosion-corrosion?

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Q. Which of the following is/are the aspects of design to minimize erosion-corrosion?

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Q. Which of the following is/are the aspects of alteration of the environment to minimize erosion-corrosion?

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