Home
Class 12
BIOLOGY
In which one of the following, the BOD (...

In which one of the following, the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order ?

A

S lt DE lt PE lt SE

B

SE lt S lt PE lt DE

C

SE lt PE lt S lt DE

D

PE lt S lt SE lt DE

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION D|15 Videos
  • ENVIRONMENTAL ISSUES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION B|35 Videos
  • ECOSYSTEM

    AAKASH INSTITUTE ENGLISH|Exercise Section - D (Assertion - Reasion Type questions)|15 Videos
  • EVOLUTION

    AAKASH INSTITUTE ENGLISH|Exercise TRY YOURSELF|29 Videos

Similar Questions

Explore conceptually related problems

Which is correct ascending arragement of BOD of sewage (S) distillery effluent (DE). Paper mill effluent (PE) and sugar mill effluent (SE)

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from

List the events that reduce the biological oxygen demand (Bod) of a promary effluent during sewage treatment .

Median of a distribution is the value of the variable which divides it into equal parts . In case of individual observations x_1,x_2 .. x_n , if the number of observations is odd, then median is the value of ((n+1)/2) th observation when the observations have been arranged in ascending or descending order of magnitude. In case of even number of observations median is the A.M. of the values of (n/2) th and (n/2+1) th observations, arranged in ascending or descending order of magnitude . The mode of distribution is that value of the variable for which the frequency is maximum . The mode of following series is {:("value (x)",40,44,48,52,56,62,64,72,76),("frequency (f)",10,12,14,20,15,19,18,8,4):}

Given below are the steps involved in sewage treatment. Arrange them in proper sequence and select the correct option. A. Passage of primary effluent into large aeration tanks for mechanical agitation and pumping of air. B. Passage of secondary effluent and formation of activated sludge. C. Physical removal of particles through filtration and sedimentation D. Release of effluent from the secondary treatment plant into natural water bodies. E. Growth of useful aerobic microbes into flocs which significantly reduce the BOD.

AAKASH INSTITUTE ENGLISH-ENVIRONMENTAL ISSUES-ASSIGNMENT SECTION C
  1. According to Central Pollution Control Board (CPCB), which particular ...

    Text Solution

    |

  2. A lake near a village suffered heavy mortality of fishes within a few ...

    Text Solution

    |

  3. In which one of the following, the BOD (Biochemical Oxygen Demand) of ...

    Text Solution

    |

  4. In a coal-fired power plant, electrostatic precipitators are installed...

    Text Solution

    |

  5. Which one of the following is not a bioindicator of water pollution?

    Text Solution

    |

  6. Montreal Protocol, which calls for appropriate action to protect the o...

    Text Solution

    |

  7. Photochemical smog does not contain

    Text Solution

    |

  8. The limit of BOD prescribed by the Central Pollution Control Board for...

    Text Solution

    |

  9. More than 70% of world fresh water is contained in

    Text Solution

    |

  10. Which one of the following pairs is mismatched ?

    Text Solution

    |

  11. identify the correctly matched pair

    Text Solution

    |

  12. Which of the following is not used for the disinfection of drinking wa...

    Text Solution

    |

  13. Prolonged liberal irrigation of agricultural fields is likely to creat...

    Text Solution

    |

  14. The toxic effect of carbon monoxide is due to its greater affinity for...

    Text Solution

    |

  15. Which of the following is a secondary pollutant?

    Text Solution

    |

  16. Which one of the following is not correct with regard to the harmful e...

    Text Solution

    |

  17. Which is the cause of damage to relative biological effectiveness:

    Text Solution

    |

  18. The domestic sewage in large cities

    Text Solution

    |

  19. Which among the following is likely to have the highest levels of DDT ...

    Text Solution

    |

  20. Sound becomes hazardous noise pollution at level

    Text Solution

    |