Statement (I): Dilution of the wastewater sample with organi

Civil Engineering

M: +2.00/-0.66

Direction: Each of the question consist of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answer to these items using the codes given below:

Statement (I): Dilution of the wastewater sample with organic-free, oxygen-saturated water is necessary to measure 5-day 20 °C BOD values greater than 7 mg/l.
Statement (II): Saturation concentration of oxygen in water at 20 °C is approximately 9mg/l.

[ESE (IES) CE 2017 Technical]

A Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

B Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

C Statement (I) is true but Statement (II) is false

D Statement (I) is false but statement (II) is true