A) Water containing \[{{H}_{2}}S{{O}_{4}}\]
B) Water containing NaOH
C) \[Ba{{(OH)}_{2}}\] solution
D) KOH solution
Correct Answer: C
Solution :
Pure hydrogen is obtained by the electrolysis of \[Ba{{(OH)}_{2}}\] solution in a U-tube using nickel electrode. The gas is liberated at the cathode and is passed over heated platinum gauze to remove oxygen if present as impurity.
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