Biochemical Oxygen Demand (BOD) in a river water

remains unchanged when algal bloom occurs

has no relationship with the concentration of oxygen in the water

gives a measure of Salmonella in the water

increases when sewage gets mixed with river water

Solution

increases when sewage gets mixed with river water

Biochemical Oxygen Demand (BOD) is the amount of oxygen used for biochemical oxidation by micro-organisms in a unit volume of water. Polluted water has high BOD. Thus, when sewage gets mixed with river water, BOD will increase.

Some More Questions From Microbes in Human Welfare Chapter

Name the first acid to be produced by fermentation.

How can a small amount of curd added to fresh milk convert it into curd ?

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Microbes In Human Welfare

Biochemical Oxygen Demand (BOD) in a river water

remains unchanged when algal bloom occurs

has no relationship with the concentration of oxygen in the water

gives a measure of Salmonella in the water

increases when sewage gets mixed with river water

Some More Questions From Microbes in Human Welfare Chapter

Name the first acid to be produced by fermentation.

How can a small amount of curd added to fresh milk convert it into curd ?

What is toddy ?

What are fermentors ?

What is primary sludge ?

What are flocs ?

What is relationship between BOD and organic matter in sewage ?

Name two gases produced during microbial treatment by sewage.

Which gas is produced by bacteria which grow anaerobically on cellulosic material

Who discovered penicillin?

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For Daily Free Study Material Join wiredfaculty

Microbes In Human Welfare

Biochemical Oxygen Demand (BOD) in a river water remains unchanged when algal bloom occurs has no relationship with the concentration of oxygen in the water gives a measure of Salmonella in the water increases when sewage gets mixed with river water

Some More Questions From Microbes in Human Welfare Chapter

Name the first acid to be produced by fermentation.

How can a small amount of curd added to fresh milk convert it into curd ?

What is toddy ?

What are fermentors ?

What is primary sludge ?

What are flocs ?

What is relationship between BOD and organic matter in sewage ?

Name two gases produced during microbial treatment by sewage.

Which gas is produced by bacteria which grow anaerobically on cellulosic material

Who discovered penicillin?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Biochemical Oxygen Demand (BOD) in a river water

remains unchanged when algal bloom occurs

has no relationship with the concentration of oxygen in the water

gives a measure of Salmonella in the water

increases when sewage gets mixed with river water