Westonci.ca is the best place to get answers to your questions, provided by a community of experienced and knowledgeable experts. Experience the convenience of getting accurate answers to your questions from a dedicated community of professionals. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

Which of the following statement is correct?
A. Two dissimilar metals are physically joined. Under all circumstances, the one that corrodes is always the more anodic one.
B. Corrosion is always harmful.
C. Two pieces of same metal are joined by a bolt leaving a gap in between. Galvanic corrosion occurs when the metal pieces are immersed in water for weeks.
D. An oxidation reaction occurs only in an environment having oxygen.