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Discussion :: GATE Civil

  1. A student began experiment for determination of 5-day, 20°C BOD on Monday. Since the 5th day fell on Saturday, the final DO readings were taken on next Monday. On calculation, BOD (i.e. 7 day, 20°C) was found to be 150 mg/L. What would be the 5-day, 20°C BOD (in mg/L)? Assume value of BOD rate constant (k) at standard temperature of 20°C as 0.23/day (base e). __________
  2. A.
    122 to 127
    B.
    133 to 138
    C.
    127 to 132
    D.
    142 to 147

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    Answer : Option C

    Explanation :

    -NA-


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