HClO4,HNO3 and HCl are all strong acids in aqueous solution. In glacial acetic acid medium, their acid strength correct order is
HClO4>HCl>HNO3
HNO3>HClO4>HCl
HCl>HClO4>HNO3
HCl>HClO4≈HNO3
In glacial acetic acid HCl is strong acid than HNO3. order of acid strength HClO4>HCl>HNO3