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Question
In which of the following applications of Iron, rusting will occur most? Support your answer with valid reason.
| A | B | C | D |
 |
 |
 |
 |
Options
A - Iron Bucket electroplated with Zinc
B - Electricity cables having iron wires covered with aluminium
C - Iron hinges on a gate
D - Painted iron fence
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Solution
C - Iron hinges on a gate
Iron is in contact with both atmospheric oxygen and moisture/ water vapour.
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