AIIMS 2015 Chemistry Faraday's Laws of Electrolysis MCQ Question
Salts of metals X, Y and Z are electrolysed under identical condition using same quantity of electricity. It was observed that 4.2 g of X, 5.4 g of Y and 19.2 g of Z were deposited at respective cathode. If the atomic weights of X, Y, Z are 7, 27 and 64 respectively, then their ratio of valencies is
1 : 2 : 3
1 : 3 : 2
2 : 3 : 1
3 : 2 : 2
Correct Answer
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