In drinking water supply, which of the following treatments is not involved
A). Coagulation
B). Sedimentation
C). Softening
D). Disinfection
Softening
Softening is not involved in drinking water supply.
1. Williamson's synthesis is widely used in the laboratory preparation of
2. Atomic number of an atom gives the number of which of the following ?
3. Chemical formula of washing soda is
4. Which of these acids is not organic in origin
5. Which one of the following pairs is not correctly matched?
6. Ruby and sapphire are oxides of
7. Methanoic and ethanoic acids can be distinguished by the action of
8. Diamond does not conduct electricity, because