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Question

Of the following the one that does not make use of chemical effect of electric current is

A
electroplating
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B
electrotyping
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C
thermoelectric refrigerator
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D
voltaic cells
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Solution

The correct option is B thermoelectric refrigerator
Electroplating, electrotyping and voltaic cell involves ionic reactions(electrochemical). Thermoelectric refrigerator does not involve any chemical reaction.

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