What is the permitted concentration of manganese in drinking water?
A) 30 g/l
B) 40 g/l
C) 50 g/l
D) 60 g/l
Correct Answer:
Verified
Q5: When is strong basic anion not necessary?
A)silica
Q6: When the hardness and alkalinity are around
Q7: In case along with silica, there is
Q8: For obtaining Silica<5 ppm which of these
Q9: In which year was the Ferrosand process
Q11: What is the permitted concentration of arsenic
Q12: What is the minimum time of aeration?
A)20
Q13: What is the tank volume of aeration
Q14: At what pH should the water be
Q15: The aeration system will decrease the redox
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