Step of sewage water treatment in which there are some aeration and organic material is converted to inorganic materials is called
A. primary sewage treatment
B. secondary sewage treatment
C. activated sludge treatment
D. chlorination
Related Questions on Chapter 7: Environmental Chemistry II Water Chemistry Mcqs for High School - Grade 10
The ratio of hydrogen (H) and oxygen (O) in water molecule by volume is
A. 0.0840277777777778
B. 0.0430555555555556
C. 0.125694444444444
D. 0.167361111111111
What is the fourth step of raw water treatment?
A. sedimentation
B. coagulation
C. filtration
D. chlorination
The hardness that cannot be removed by boiling is called
A. temporary hardness
B. permanent hardness
C. semi temporary hardness
D. semi permanent hardness
A. primary sewage treatment
B. secondary sewage treatment
C. activated sludge treatment
D. chlorination