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Water. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceWater.2 Marks
Question
Name the gas evolved at cathode and anode when water is electrolysed. State their ratio by volume.
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Answer

  1. The gas which is evolved at the cathode: Hydrogen (H2).
  2. The gas which is evolved at the anode: Oxygen (O2)
  3. The ratio of H2 and O2 = 2:1.

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