Exercise: Water Treatment

Questions for: Water Treatment

Sanitizer used specifically for vitreous enamel are
A:
strong alkalis
B:
strong acids
C:
weak alkali with sodium silicate
D:
none of these
Answer: C
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Which of the following physical method is used as germicidal in modern time for the treatment of drinking water?
A:
Chlorination
B:
Treating with potassium permagnate
C:
UV radiation
D:
Treating with bleaching powder
Answer: C
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Which of the following chemical is sometime added in the process of coagulation and flocculation?
A:
Aluminum sulphate
B:
Aluminum oxide
C:
Calcium chloride
D:
None of these
Answer: A
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Acid used mostly for removal of milk stone is
A:
phosphoric acid
B:
nitric acid
C:
gluconic acid
D:
tartaric acid
Answer: B
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According to BIS the maximum permissible limit of dissolved solids in drinking water is
A:
1000 mg/l
B:
500 mg/l
C:
2000 mg/l
D:
1500 mg/l
Answer: C
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