Disadvantages of Heavy Water

Q. Choose the correct statement(s) regarding heavy water from the options given below:

1. It is mildly toxic.
2. It is injurious to living organisms.
3. It is fit for agriculture.
4. It contains deuterium.

Q.

Presence of which makes water unsuitable for drinking.

1. Fe = 0.2 ppm

2. Cu = 2 ppm

3. Mn = 0.5 ppm

4. Zn = 0.05 ppm