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Asked: 2025-10-02T14:00:59+00:00 In:

Observe the following diagram showing the conditions under which a metal ‘M’ corrodes. List your observations in each of the three cases A, B and C with the reason, if the metal ‘M’ is generally protected against corrosion by the method of galvanisation.

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Observe the following diagram showing the conditions under which a metal ‘M’ corrodes. List your observations in each of the three cases A, B and C with the reason, if the metal ‘M’ is generally protected against corrosion by the method of galvanisation.

Case A: Significant corrosion will be observed on the metal surface because the protective zinc coating on the metal readily react with oxygen and the moisture present in the moist air.

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    1. Case A: Significant corrosion will be observed on the metal surface because the protective zinc coating on the metal readily react with oxygen and the moisture present in the moist air.

      Case B: No corrosion will be observed due to the oil layer with reacts with acts as a barrier and effectively inhibiting corrosion.

      Case C: Minimal to no corrosion will be observed due to lack of moisture in the presence of dry air.

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