What is the key difference between prima | Class 12 Biology Chapter Microbes in Human Welfare, Microbes in Human Welfare NCERT Solutions

Question: What is the key difference between primary and secondary sewage treatment?

Answer:

Primary sewage treatment

Secondary sewage treatment

1.

It is a mechanical process involving the removal of coarse solid materials.

1.

It is a biological process involving the action of microbes.

2.

It is inexpensive and relatively less complicated.

2.

It is a very expensive and complicated process.

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Reference examples and data from the chapter when answering questions about Microbes in Human Welfare.
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Comments

Shreya awasthi
2019-12-11 06:57:49

Not properly answered

Ak
2018-09-15 00:59:07

Yoooo

kushal
2017-09-20 08:46:37

Thank you so much

Om Kumar Patra
2017-02-03 23:42:34

Thanks for this answer.

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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 8: What is the key difference between primary and secondary sewage treatment?....

What is the key difference between prima | Class 12 Biology Chapter Microbes in Human Welfare, Microbes in Human Welfare NCERT Solutions

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	Primary sewage treatment		Secondary sewage treatment
1.	It is a mechanical process involving the removal of coarse solid materials.	1.	It is a biological process involving the action of microbes.
2.	It is inexpensive and relatively less complicated.	2.	It is a very expensive and complicated process.