Question

Which of the following is the characteristic of a pit?

(a) Cavity with the surface diameter about the less than the depth

(b) Cavity with the surface diameter about the same as or less than the depth

(c) Cavity with the surface diameter about the same as or high than the depth

(d) Cavity with the surface diameter about the high than the depth

I had been asked this question in an international level competition.

My query is from Eight Forms topic in division Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Right option is (b) Cavity with the surface diameter about the same as or less than the depth

The best I can explain: Pitting is extremely localized corrosion that results in pits or cavity. A pit is a cavity with the surface diameter about the same as or less than the depth.