Among the following oxacids, the correct decreasing order of acidic strength is

H O C l > H C l O_{2} > H C l O_{3} > H C l O_{4}

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H C l O_{4} > H O C l > H C l O_{2} > H C l O_{3}

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H C l O_{4} > H C l O_{3} > H C l O_{2} > H C l O

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H C l O_{2} > H C l O_{4} > H C l O_{3} > H O C l

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Solution

The correct option is C $H C l O_{4} > H C l O_{3} > H C l O_{2} > H C l O$
Acidic strength increases as the oxidation number of central atom increases.

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