What happens when water contains 8-20 ppm of fluoride concentration?

Related MCQs

• The fluoride concentration for prevention of dental caries is                          
• In which process, the fluoride content of water is raised?
• The process of reducing the fluoride content from water is called            
• The permissible limit of turbidity of domestic water is          ppm.
• Which of the following is not used as a fluoride compound?
• For obtaining Silica<5 ppm which of these should be utilized?
• What is the permitted concentration of manganese in drinking water?
• What is the permitted concentration of arsenic in drinking water?
• Surface water can act as a source of water in water supply scheme.
• In which type of water demand, minimum average consumption of water takes place?