10 mL of 0.1 N HCI was added to 20 mL of...

10 mL of 0.1 N HCI was added to 20 mL of 0.1 N KOH. .The excess of KOH was neutralised by 0.05 N `H_2SO_4`. The amount of `H_2SO_4` consumed was :

10.0 mL

15.0 mL

20.0 mL

30.0 mL

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