8 test
1. What particle is formed on the anode during contact corrosion of copper and tin in humid air?
2. What particle is formed on the cathode during contact corrosion of manganese and copper in an acidic environment?
3. What is the composition of the corrosion products formed by the contact of cobalt with manganese in sea water?
4. What metal can be used to make a cathode coating to protect cadmium?
5. What metal can be used as a protector to protect iron?
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