EXAMIANS
The major disadvantage of lime soda process of water softening is that
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The alum, when added as a coagulant in water
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If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is (i) Presumptive coli-form test (ii) Confirmed coli-form test (iii) Completed coli-form test
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Which of the following causes a decrease in per capita consumption?
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The main disadvantage of oxidation pond is that
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The devices which are installed for drawing water from the sources are called
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Dissolved oxygen in streams is
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In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be
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Which of the following chemical compounds can be used for de-chlorination of water?
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Which of the following values of pH represents a stronger acid?
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