or each form of corrosion, other than uniform, do the following: (a) Describe why, where, and the conditions under which the corrosion occurs. (b) Cite three measures that may be taken to prevent or control it.

Short Answer: Three forms of corrosion other than uniform corrosion are pitting corrosion, crevice corrosion, and galvanic corrosion. Pitting corrosion involves localized cavities or holes on metal surfaces and occurs in materials exposed to corrosive substances. Crevice corrosion happens in tight spaces where corrosive substances are trapped and oxygen levels differ from the external environment. Galvanic corrosion takes place when two dissimilar metals are connected, causing the less noble metal to corrode and protect the other. Preventive measures include using corrosion-resistant materials, applying protective coatings, controlling the environment, improving design, isolating dissimilar metals, and introducing cathodic protection.