1.

A current of `2` A was passed for `1 h` through a solution of `CuSO_4. 0.237g` of `Cu^(2+)` ions was discharged at cathode . The current efficiency is .A. ` 42. 2%`B. ` 26 .1%`C. ` 10%`D. ` 40.01 %`

Answer» Correct Answer - C
` W= ( 63.5)/(2xx 96500) xx 2 xx 60 xx 60= 2 37 g`
`%` of efficlency `= (0. 237)/(2.37) xx 10%`.


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