Home
Class 12
BIOLOGY
Select the correct statement regarding a...

Select the correct statement regarding activated sludge formed during secondary sewage treatment.

A

A small part of it is rapidly pumped back from sedimentation to aeration tank

B

It absorbs pathogenic bacteria present in waste water while sinking to the bottom of the settling tank

C

A major part of it is anaerobically digested

D

Both (a) and (c)

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • HUMAN REPRODUCTION

    NCERT FINGERTIPS|Exercise Human Reproduction|185 Videos

  • MOLECULAR BASIS OF INHERITANCE

    NCERT FINGERTIPS|Exercise Molecular Basis Of Inheritance|151 Videos

Similar Questions

Explore conceptually related problems

Select the correct statement regarding oxides

Select the correct statement regarding XeF_2

Select the correct statement regarding borax -

Select the correct statement regarding Schwann cells

Select the correct statement regarding IF_(7) .

Select the correct statement regarding spinal nerves

Select the correct statement regarding heterocysts.

NCERT FINGERTIPS-MICROBES IN HUMAN WELFARE-Microbes In Human Welfare
  1. Given below is the flow chart of sewage treatement. Identify A,B,C and...

    Text Solution

    |

  2. Read the following statements and select the incorrect one.

    Text Solution

    |

  3. Select the correct statement regarding activated sludge formed during ...

    Text Solution

    |

  4. Which of the following steps is taken by the Ministry of Enviornment a...

    Text Solution

    |

  5. Mach column I with column II and select the correct answer from the gi...

    Text Solution

    |

  6. Study the following statements and select the incorrect ones. (i) Ph...

    Text Solution

    |

  7. Methanogens, growing anaerobically on cellulosic material produce

    Text Solution

    |

  8. Which of the following bacteris is present in the rumen of cattle?

    Text Solution

    |

  9. Process of biogas production is

    Text Solution

    |

  10. Biogas is produced by

    Text Solution

    |

  11. Match column I with column II and select the correct option from the c...

    Text Solution

    |

  12. These bacteria grow anaerobically on cellulosic material, produce larg...

    Text Solution

    |

  13. The given figure represents a typical biogas plant. Select the correct...

    Text Solution

    |

  14. Which of the following statements is incorrect ?

    Text Solution

    |

  15. Biogas generation is a three stage anaerobic digestion of animal and o...

    Text Solution

    |

  16. Read the following statements and select the correct option. Statem...

    Text Solution

    |

  17. Biopesticides are

    Text Solution

    |

  18. When a natural predator (living organism) is applied on the other path...

    Text Solution

    |

  19. Dragonflies are used to get rid of

    Text Solution

    |

  20. A microbial biocontrol agent that can be used to control butterfly cat...

    Text Solution

    |