Which of the following statement(s) is/are correct in the case of heavy water?

a. Heavy water is used as a moderator in nuclear reactor
b. Heavy water is more effective as solvent than ordinary water
c. Heavy water is more associated than ordinary water
d. Heavy water has lower boiling point than ordinary water

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)

Heavy water is used as a moderator in nuclear reactor. The boiling point of heavy water is higher than ordinary water and it is not as effective in the form of solvent as water due to its low dielectric constant.