Q. Which of the following is/are the characteristics of the Knife-line attack?

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Q. Which of the following is the best remedy for the Knife-Line attack?

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Q. Which of the following alloys exhibits intergranular corrosion by steam and marine atmospheres?

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Q. Selective Leaching is the removal of one element from a solid alloy by the corrosion process.

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Q. What is the percent of zinc that consists of common yellow brass?

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

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Q. The Alloying of zinc to copper lowers the corrosion resistance of the copper.

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Q. Which of the following is/are the characteristics of dezincified brass alloy?

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Q. Which of the following type of brasses is/are highly prone to the uniform or layer-type dezincification?

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Q. Which of the following type of brasses is/are highly prone to localize or plug-type dezincification?

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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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