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World.s most problematic aquatic weed is...

World.s most problematic aquatic weed is

A

Azolla

B

Wolffia

C

Eichhornia

D

Trapa

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-ENVIRONMENTAL ISSUES-Exercise-I (Water pollution)
  1. Thermal pollution of water bodies is due to discharge of

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  2. When temperature increases dissolved oxygen of water

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  3. Realizing the importance of maintaining the cleanliness of the water b...

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  4. Ganga action plan for controlling pollutionin Ganges started in

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  5. World.s most problematic aquatic weed is

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  6. Wich of the following causes biomagnifications ?

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  7. The expanded form of DDT is

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  8. The green scum seen in the fresh water bodies is

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  9. Match correctly the following and choose the correct option . {:(" ...

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  10. Which one of the following impurities is easiest to remove form waste ...

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  11. Which one of the following diseases in not due to contamination of wat...

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  12. Nuisance growth of aquatic plants and bloom-forming algae in natural w...

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  13. Algal blooms impart a distinct colour to water due to

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  14. Escherichia coli is used us an indicator organism to determine polluti...

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  15. Which of the following is absent in polluted water ?

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  16. Lead concentration in blood is considered alarming if it is

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  17. Which of the following is not used for disinfection of drinking water

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  18. What is common to both the species shown in figures A and B ?

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  19. DDT residues are rapidly passed through food chain causing biomagnif...

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  20. Match the following . {:(" List-I "," List-II "),(" (Water polluta...

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