Home
Class 12
BIOLOGY
Assertion:- During integrated waste wate...

Assertion:- During integrated waste water treatment in town of Arcata cleaning process occurs in two stages.
Reason: In first step dissovled heavy metals are removed and in second stage conventional sedimentation, filleration and chlorine treatments are given.

A

If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.

B

If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason if False.

D

If both Assertion `&` Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion and reason question, we will analyze both statements step by step. ### Step 1: Analyze the Assertion The assertion states: "During integrated wastewater treatment in the town of Arcata, cleaning process occurs in two stages." - **Evaluation**: This statement is true. The integrated wastewater treatment process in Arcata is indeed known to involve two stages for cleaning wastewater. ### Step 2: Analyze the Reason The reason states: "In the first step, dissolved heavy metals are removed, and in the second stage, conventional sedimentation, filtration, and chlorine treatments are given." - **Evaluation of the First Part**: The first part of the reason, which claims that dissolved heavy metals are removed in the first step, is true. This is a common practice in wastewater treatment to ensure that harmful metals do not enter the environment. - **Evaluation of the Second Part**: The second part of the reason states that conventional sedimentation, filtration, and chlorine treatments are given in the second stage. - **Sedimentation**: This is true; sedimentation is a part of the treatment process. - **Filtration**: This is incorrect; in the second stage, bacterial treatment is typically used instead of filtration. - **Chlorine Treatments**: This is also incorrect; chlorine treatment is usually the final step in wastewater treatment, not part of the second stage. ### Step 3: Conclusion - **Assertion**: True - **Reason**: False (since it contains inaccuracies regarding filtration and the timing of chlorine treatment) ### Final Answer The correct relationship is that the assertion is true, but the reason is false. ---
Promotional Banner

Topper's Solved these Questions

  • ORGANISM & ENVIRONMENT AND DEMOGRAPHY

    ALLEN|Exercise EXERCISE-III|110 Videos
  • NEURAL CONTROL AND COORDINATION

    ALLEN|Exercise Questions|61 Videos
  • ORGANISM AND POPULATION (ECOLOGY)

    ALLEN|Exercise S|26 Videos

Similar Questions

Explore conceptually related problems

Large quantities of sewage is generated everyday in cities and towns, which is treated in Sewage Treatment Plants (STPs) to make it less polluted. Given below is the flow diagram of one of the stages of STP. Observe the given flow diagram and answer the questions accordingly (a) Why primary effluent is passed into large aeration tanks? (b) Write the technical term used for the sediment formed? Mention its significance (c) Explain the final step that results in the formation of biogas in the large tank before the treated effluent is released into water bodies.

Transition metal and their compounds are used as catalyst in industry and in biological system. For example, in the Contact Process, vanadium compounds in the +5 state (V_(2)O_(5) or VO_(3)^(-)) are used to oxidise SO_(2) to SO_(3) : SO_(2)+(1)/(2)O_(2) overset(V_(2)O_(5))(to) SO_(3) It is thought thta the actual oxidation process takes place in two stages. In the first step, V^(5+) in the presence of oxide ions converts SO_(2) to SO_(3) . At the same time, V^(5+) is reduced to V^(4+) . 2V^(5+)+O^(2-)+SO_(2) to 2V^(4+)+SO_(3) In the second step, V^(5+) is regenerated from V^(4+) by oxygen: 2V^(4+)+(1)/(2)O_(2) to 2V^(5+)+O^(2-) The overall process is, of curse, the sum of these two steps: SO_(2) +(1)/(2)O_(2) to SO_(3) Q. During the course of the reaction:

Transition metal and their compounds are used as catalyst in industry and in biological system. For example, in the Contact Process, vanadium compounds in the +5 state (V_(2)O_(5) or VO_(3)^(-)) are used to oxidise SO_(2) to SO_(3) : SO_(2)+(1)/(2)O_(2) overset(V_(2)O_(5))(to) SO_(3) It is thought thta the actual oxidation process takes place in two stages. In the first step, V^(5+) in the presence of oxide ions converts SO_(2) to SO_(3) . At the same time, V^(5+) is reduced to V^(4+) . 2V^(5+)+O^(2-)+SO_(2) to 2V^(4+)+SO_(3) In the second step, V^(5+) is regenerated from V^(4+) by oxygen: 2V^(4+)+(1)/(2)O_(2) to 2V^(5+)+O^(2-) The overall process is, of curse, the sum of these two steps: SO_(2) +(1)/(2)O_(2) to SO_(3) Q. Catalytic activity in transition metals depends on:

ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-Assertion and Reason
  1. Assertion: Competition always occurs between closely related species c...

    Text Solution

    |

  2. Assertion: Female mosquito is not considered as parasite although it ...

    Text Solution

    |

  3. Assertion: Decomposition is one of the most vital functional attribute...

    Text Solution

    |

  4. Assertion: Temperature and soil moisture are the important climatic fa...

    Text Solution

    |

  5. Assertion: In Terrestrial, ecosystem much larger fraction of energy fl...

    Text Solution

    |

  6. Assertion:-Detritus food chain may be connected with grazing food chai...

    Text Solution

    |

  7. Assertion: Climax community is in near equilibrium with the environmen...

    Text Solution

    |

  8. Assertion: Biodiversity and its conservation are vital environmental i...

    Text Solution

    |

  9. Assertion: There is no clearcut estimation about biodiversity of proka...

    Text Solution

    |

  10. Assertion: Removal of key stone species from any ecosystem leads to de...

    Text Solution

    |

  11. Assertion: Introduction of alien species is responsible for extinction...

    Text Solution

    |

  12. Assertion: Co-extinction is also one of the evil quartet about biodive...

    Text Solution

    |

  13. Assertion: Sacred groves are also one of the mean of ex-situ conservat...

    Text Solution

    |

  14. Assertion : An electrostatic precipitator (ESP) is a particulate colle...

    Text Solution

    |

  15. Assertion : There is a sharp decline in dissolved oxygen downstream fr...

    Text Solution

    |

  16. A : A few toxic substance often present in industrial waste waters und...

    Text Solution

    |

  17. Assertion:- During integrated waste water treatment in town of Arcata ...

    Text Solution

    |

  18. Assertion: Excess of ozone in troposphere called bad ozone while exces...

    Text Solution

    |

  19. [A] : Suspended particulate matter (SPM) is an important pollutant rel...

    Text Solution

    |

  20. Assertion (A) : Presently, the global atmosphere is warming up. Reas...

    Text Solution

    |