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Heavy water is...

Heavy water is

A

`H_(2)O ^(18)`

B

Water obtained by repeated distillation

C

`D_(2)O`

D

Water at `4^(@)C`

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Some statements about heavy water are given below : (i) Heavy water is used as a moderator in nuclear reactors (ii) Heavy water is more associated than ordinary water. (iii) Heavy water is more effective solvent than ordinary water Which of the above statments are correct ?

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a. A small amount of acid or alkali is added before electrolysis of water. Why? b. What happens when: i. Hydrolith is treated with water. ii. Heavy water reacts with aluminium carbide.

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