Welcome to the NCERT Solutions for Class 12 Biology - Chapter Microbes in Human Welfare. This page offers a step-by-step solution to the specific question from Exercise 1, Question 8: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.
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Primary sewage treatment |
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Secondary sewage treatment |
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It is a mechanical process involving the removal of coarse solid materials. |
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It is a biological process involving the action of microbes. |
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It is inexpensive and relatively less complicated. |
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It is a very expensive and complicated process. |
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