4. Cl2(g) + Ba(OH)2  X(aq.) + BaCl2 + H2O ; X + H2SO4  Y + BaSO4 Y  365K     Z(green) + H 2 O + O 2 Y and Z are respectively : (A) HClO4, ClO2 (B) HClO3, ClO2 (C) HClO3, Cl2O6 (D) HClO4, Cl2O7 5. Manganous salt in presence of catalyst zinc sulphate or zinc oxide is oxidised by potassium permanganate in neutral or faintly alkaline medium to : (A) MnO2 (B) Mn2O7 (C) Mn2O3 (D) Can not be oxidised

4. Cl2 (g) + Ba(OH)2   X(aq.) + BaCl2 + H2O ; X + H2SO4  Y + BaSO4 Y  365K   Z(green) + H2O + O2 Y and Z are respectively : (A) HClO4 , ClO2 (B) HClO3 , ClO2 (C) HClO3 , Cl2O6 (D) HClO4 , Cl2O7 5. Manganous salt in presence of catalyst zinc sulphate or zinc oxide is oxidised by potassium permanganate in neutral or faintly alkaline medium to : (A) MnO2 (B) Mn2O7 (C) Mn2O3 (D) Can not be oxidised