Advertisements
Advertisements
Question
One of the free-living anaerobic nitrogen-fixer is _________.
Options
Azotobacter
Beijerinckia
Rhodospirillum
Rhizobium
Advertisements
Solution
One of the free-living anaerobic nitrogen-fixer is Rhodospirillum.
APPEARS IN
RELATED QUESTIONS
Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.
Why is this sewage water treatment essential?
Small part of activated sludge is passed back into primary sedimentation tank.
If the above statement is correct then rewrite as it is and in case it is incorrect then reframe it.
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
______ refers to the organic matter which settles down after physical treatment of sewage.
Study the following statements regarding tertiary treatment of sewage and choose the correct option.
i. It produces methane gas.
ii. The effluents formed from these plants undergo chlorination.
iii. BOD is significantly increased at this step.
iv. It includes screening and passage of effluent through grit chamber.
Wastewater treatment generates a large quantity of sludge, which can be treated by ______.
The primary treatment of waste water involves the removal of ______.
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
What would happen if a large volume of untreated sewage is discharged into a river?
