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Faraday's first law of electrolysis states that the mass of substance deposited at an electrode is
Aproportional to the voltage applied (typical)
Bindependent of current
Cinversely proportional to time
Dproportional to the quantity of electricity passed
Answer & Solution
Correct answer: D. proportional to the quantity of electricity passed
1. m = Z · Q where Q is total charge (Q = I·t).
2. Hence mass deposited is proportional to charge (and therefore to current × time).
3. Z is the electrochemical equivalent of the substance.
_Source: Maharashtra Balbharati Std XII Chemistry, Ch 5 "Electrochemistry" §5.7_
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