Which of the following statements are correct regarding `D_(2)O` and `H_(2)O`?
I. `D_(2)O` reacts with `Al_(4)C_(3)` at a faster rate than does `H_(2)O`.
II. The freezing point of `D_(2)O`is higher than that of `H_(2)O`.
III. NaCl is more solution in `D_(2)O` than in `H_(2)O`.
IV. lonic product of `D_(2)O` is smaller than that if `H_(2)O`.
Select the correct answer using the codes givem below.

Options

A. I and II
B. I and III
C. II and III
D. II and IV

Answer

D

Explanation

`D_(2)O` reacts slower than `H_(2)O` due to greater mass, its freezin point is `3.8^(@)C` . NaCl is less soluble in `D_(2)O` as in `H_(2)O` and `D_(2)O` does not dissociate therefore , its ionic prouduct is smaller than `H_(2)O`.