Q.

Cost of Electricity to deposit 12 grams of Magnesium is Rs 600. Cost of Electricity to deposit 10 grams of calcium will be

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a

Rs 500

b

Rs 450

c

Rs 150

d

Rs 300

answer is D.

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Detailed Solution

12 grams of Magnesium =Rs 600 ; 12 gram of 'Mg'=GEW,  which requires one Faraday; Thus cost of  1F=Rs 600; GEW of 'Ca' = 20 g; 20 g require Rs 600 10 g    require  X; X=Rs 300
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