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Questions and Answers
What is the volume of the water sample initially taken for BOD determination?
What is the volume of the water sample initially taken for BOD determination?
- 200 cm²
- 8.1.8 cm³
- 20 cm³ (correct)
- 800 cm³
What is the concentration of the thiosulphate solution used in the dissolved oxygen determination?
What is the concentration of the thiosulphate solution used in the dissolved oxygen determination?
- 0.025% (correct)
- 0.005%
- 0.008%
- 0.0025%
At what temperature were the bottles incubated for BOD determination?
At what temperature were the bottles incubated for BOD determination?
- 20°C (correct)
- 30°C
- 25°C
- 1°C
What is the BOD value of the waste water sample?
What is the BOD value of the waste water sample?
What is the BOD value of the waste water sample?
What is the BOD value of the waste water sample?
What is the volume of the water sample initially taken for BOD determination?
What is the volume of the water sample initially taken for BOD determination?
What was the temperature at which the bottles were incubated for BOD determination?
What was the temperature at which the bottles were incubated for BOD determination?
What is the concentration of the thiosulphate solution used in the dissolved oxygen determination?
What is the concentration of the thiosulphate solution used in the dissolved oxygen determination?
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Study Notes
BOD Determination
- The volume of the water sample initially taken for BOD determination is 250ml.
- The concentration of the thiosulphate solution used in the dissolved oxygen determination is 0.025N.
- The bottles were incubated at 20°C for BOD determination.
- The BOD value of the waste water sample is found by measuring the oxygen depletion over 5 days.
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