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Assertion : As the amount of dissolved o...

Assertion : As the amount of dissolved oxygen in water decreases, BOD increases.
Reason: Microorganisms involved in biodegradation of organic matter requires a lot of dissolved `O_(2)`.  

A

A. Both Assertion and Reason are true and Reason is a correct explanation of the Assertion.

B

B. Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion

C

C. Assertion is true but Reason is false.

D

D. Assertion is false but Reason is true.

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The correct Answer is:
A
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KUMAR PRAKASHAN-ENVIRONMENTAL ISSUES-Section - F (Multiple Choice Question (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)
  1. What do you mean by Biological Oxygen Demand (BOD) ?

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  2. Which of the following happens in third phase of waste water treatment...

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  3. Assertion : As the amount of dissolved oxygen in water decreases, BOD ...

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  4. Find the mismatch pair.   (A) Consumption of fossil fuel - Release of...

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  5. Increase in the concentration of substances at each trophic level of f...

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  6. Which gas is lighter than air?

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  7. A: The soure of air pollution are natural as well as anthropogenic. ...

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  8. Which of the following is incorrect with regard to CNG ?   (A) It bur...

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  9. Which is the main cause to convert water bodies into land ?

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  10. Mark the odd one.

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  11. Government of India has instituted "Amrita Devi Bishnoi Wildlife Prote...

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  12. Which of the following happens in first phase of waste water treatment...

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  13. Anthropogenic Source of Air Pollution : Fuel consumption :: Natural So...

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  14. Which substance emitted by refrigerators and air conditioners can caus...

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  15. Who gave the leadership to Sundarlal Bahuguna in Chipko movement ?

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  16. Who established "Haryana Kisan Welfare Club" ?   (A) Dagar (B) Do...

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  17. What is greenhouse gas ?

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  18. The world.s most problematic aquatic weed : Terror of Bengal :: Large ...

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  19. Which of the following is non-biodegradable ?   (A) Plants (B) An...

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  20. Mark the odd one.

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