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Discharge difficulty is highest in _____________________

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in Engineering Chemistry II by (789k points)
Discharge difficulty is highest in _____________________

(a) Calcium ions

(b) Copper ions

(c) Lead ions

(d) Silver ions

This question was posed to me by my school teacher while I was bunking the class.

My question comes from Applications of Electroplating topic in section Electroplating of Engineering Chemistry II

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Correct choice is (a) Calcium ions

The explanation: Since calcium is considered to be a heavy metal, usually discharge in the electrolysis of calcium far tedious as compared to other metals. (in the discharge scale, calcium has the highest discharge ability).

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