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How much time is required to deposit `1xx10^(-3)` cm thick layer of silver (density is 1.05 g `cm^(-3)` ) on a surface of area 100 `cm^2` by passing a current of 5 A through `AgNO_3` solution?A. 125 sB. 115 sC. 18.7 sD. 27.25 s |
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Answer» Correct Answer - C Mass of Ag in coated layer = V x d `=1xx10^(-3) xx100xx1.05`=0.105 g `W=(IxxtxxEq.wt.)/96500` `t=(Wxx96500)/(IxxEq.wt.)=(0.105xx96500)/(5xx108)`=18.7 s |
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