Home
Class 12
BIOLOGY
Which of the option shows following exam...

Which of the option shows following examle in ascending ordr in terms f BOD
(i) Distilled water
(ii) Tap water
(iii) Sewage wastes drained in river

A

II, I and III

B

I, II and III

C

III, I and II

D

III, II and I

Text Solution

Verified by Experts

The correct Answer is:
B
The correct order (ascending) of BOD is I, II and III, BOD (Biochemical Oxygen Demand) is the amount of dissolved oxygen needed by aerobic organisms in a waterbody to breakdown organic material present in it at certain temperature over a specific period of time.
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    ARIHANT NEET|Exercise Chapter exercises (B) Medical entrances special format questions (Assertion-Reason)|11 Videos

  • ECOSYSTEM

    ARIHANT NEET|Exercise Exercises C Medical entrances gallery (collection of questions Asked in NEET & Various Medical Entrance Exams)|77 Videos

  • EVIDENCES OF EVOLUTION

    ARIHANT NEET|Exercise Chapter exercises (Medical entrances gallery)(Collection of questions Asked in NEET & Various Medical Entrance Exams )|58 Videos

Similar Questions

Explore conceptually related problems

Which of the following will have the minimum "BOD (A) Sea water (B) Potable water (Drinking water) (C) Polluted water (D) Sewage

Classify the following substances into element, compound and mixture. (i) Brass (ii) Distilled water

Which of the following are not the liquid forms of water? (i) Snow (ii) Lake water (iii) River water (iv) Water vapour (v) Ice Choose the correct combination from the options below.

A water body characterized by nutrient rich water supports abundant growth of phytoplanktons and other water plants on its surface. Over time, the water body gets filled with a large number of such plants and the process is called Eutrophication. In such water bodies, dissolved oxygen content is nil or very less. Which of the following steps are used to treat industrial wastes and reduce pollution? (i) Recycle the wastes (ii) Discharge the wastes into the sea (iii) Treat and neutralise harmful chemicals in the wastes

Which of the following is True/false The lower the BOD of waste water more is its polluting potential

Which of the following are not electromagnetic waves? (i) sound waves (ii) radiowaves (iii) X rays (iv) water waves

Which of the following solutions are electrolytes? i. Dil. HCl ii. Sugar Solution iii. Alcohol in water iv. Lime water

Give the names of the following : (i) A metal which reacts with cold water (ii) A metal which reacts with hot water (iii) A metal which reacts neither with cold water nor with hot water, but with steam

ARIHANT NEET-ENVIRONMENTAL ISSUES-Chapter exercises ( C) Medical entrances gallery (Collection of Questions Asked in NEET & in Various Medical Entrance Exams)
  1. Which of the following is true for eutrophicated water body?

    Text Solution

    |

  2. If there was no carbon dioxide in the Earth's atmosphere, the temperat...

    Text Solution

    |

  3. Which of the option shows following examle in ascending ordr in terms ...

    Text Solution

    |

  4. The Air Prevention and Control of Pollution Act came into force in

    Text Solution

    |

  5. Global warming can be controlled by:

    Text Solution

    |

  6. Kyoto Protocol was endorsed at:

    Text Solution

    |

  7. Measuring Biochemical Oxygen Demand (BOD) is a method used for

    Text Solution

    |

  8. Which one of the following is a wrong statement?

    Text Solution

    |

  9. High amount of esherichita coli in water is an indicator of

    Text Solution

    |

  10. Biomagnification of DDT in an aquatic food chain starting from water h...

    Text Solution

    |

  11. Eutrophication is a phenomenon that occurs due to

    Text Solution

    |

  12. The Government of India has passed the environment (Protection) Act in...

    Text Solution

    |

  13. In an area where DDT had been used extensively, the population of bird...

    Text Solution

    |

  14. If a water body is contaminated with toxicant , its biomagnification w...

    Text Solution

    |

  15. Which one of the following pairs of gases are the major cause of "Gree...

    Text Solution

    |

  16. Which is wrong about Bhopal tragedy

    Text Solution

    |

  17. Eutrophication of often seen in:

    Text Solution

    |

  18. At present, the concentration of CO(2) in the atmosphere is about:

    Text Solution

    |

  19. The main cause of pollution in metrocities is

    Text Solution

    |

  20. Minamata disease first occurred in

    Text Solution

    |