Which of the following is not used as a fluoride compound?
A) Sodium fluoride
B) Sodium silico fluoride
C) Hydrofluosilicic acid
D) Sodium fluro carbonate
Correct Answer:
Verified
Q15: _ are constructed for water supply, electricity
Q16: What is the next step after water
Q17: Which of the following requires aesthetically pleasant
Q18: The addition of substances or energy forms
Q19: What is the type of pollution where
Q20: What percentage of solids does wastewater contain?
A)0.5%
B)5%
C)0.1%
D)1%
Q21: What is the growth of huge amounts
Q22: The optimum temperature for bacterial activity is
Q23: The fluoride concentration for prevention of dental
Q24: In which process, the fluoride content of
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