Chemistry (M.Phil./Ph.D.) 2017 Panjab University Entrance Exam With Answers

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8.

Of the following mixtures of two pure acids the strongest acid will be:

A: HNO3 + H2SO4
B: H3BO3 + H2SO4
C: HClO4 + H2SO4
D: KHSO4 + H2SO4

The answer is: C