Boric acid is an acid because its molecule

(1) Combines with proton from water molecule

(2) Contains replaceable H⁺ ion

(3) Gives up a proton

(4) Accepts Om water releasing proton

The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = 1.60 × 10^–19 C)

Suppose the elements X and Y combine to form two compounds XY₂ and X₃Y₂. When 0.1 mole of XY₂ and XY₂ weights 10 g and 0.05 mole of X₃Y₂ weights 9 g, the atomic weights of X and Y are

The solubility of AgCl(s) with solubility product 1.6 × 10 ^–10 is in 0.1 M NaCl solution would be

Which one of the following is incorrect for ideal solution ?