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When pure sulphuric acid is electrolysed...

When pure sulphuric acid is electrolysed, the product obtained at anode is :

A

`H_2S_2O_8`

B

`H_2S_4O_6`

C

`H_2S_2O_7`

D

`H_2S_2O_3`

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The correct Answer is:
A
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