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The method of making tinplate by electroplating is also known as ________

(a) selective tinplating

(b) uniform tinplating

(c) bilayer tinplating

(d) differential tinplating

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The origin of the question is Manufacture of Tinplate topic in chapter Metal Packaging Materials of Food Packaging Technology

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Correct answer is (d) differential tinplating

For explanation: The method of making tinplate by electroplating is also known as differential tinplating. The introduction of the electroplating process enabled a different thickness of tin to be applied to the two surfaces of the steel. Differential tinplating is the most cost-effective method and is efficient in covering interior and exterior of the container in a single step.

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