During the electrolysis of acidified water, the volume ratio of hydrogen to oxygen collected is: MCQ with Answer and Explanation

During the electrolysis of acidified water, the volume ratio of hydrogen to oxygen collected is:
A. 1:2
B. 2:1
C. 3:1
D. 1:1
Answer: Option B
Solution (By JKSSB Mock Tests)
Water decomposes as 2H₂O → 2H₂ + O₂. So 2 volumes of H₂ for every 1 volume of O₂, ratio 2:1. Hydrogen collected at cathode, oxygen at anode.

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