JEE Main 2013 — Electrochemistry Question with Solution
JEE Main 2013 (25 Apr Online)
Question
A solution of copper sulphate is electrolysed for minutes with a current of amperes. The mass of copper deposited at the cathode (at. mass of ) is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
where = Electrochemical equivalent
Eq. wt. of copper
$\begin{aligned}
& \mathrm{Z}=\frac{31.5}{96500} \\
& \mathrm{~W}=\mathrm{Zit}=\frac{31.5}{96500} \times 1.5 \times 10 \times 60=0.2938 \mathrm{~g}
\end{aligned}$
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This is a previous-year question from JEE Main 2013, covering the Electrochemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.