Ultimate BOD of a river water sample is 20 mg/L. BOD rate constant (natural log) is 0.15 day. The respective values of BOD (in %) exerted and remaining after 7 days are: 1. 45 and 55 2. 55 and 45 3. 65 and 35 4. 75 and 25

Ultimate BOD of a river water sample is 20 mg/L. BOD rate constant (natural log) is 0.15 day. The respective values of BOD (in %) exerted and remaining after 7 days are: 1. 45 and 55 2. 55 and 45 3. 65 and 35 4. 75 and 25

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.22P: Refer to Figure 7.24. The following data were collected during the field permeability measurement of...

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Concept explainers

Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.

Question

Ultimate BOD of a river water sample is 20 mg/L. BOD
rate constant (natural log) is 0.15 day. The respective
values of BOD (in %) exerted and remaining after 7
days are:
1.
45 and 55
2.
55 and 45
3.
65 and 35
4.
75 and 25

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