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World's most problematic aquatic weed ...

World's most problematic aquatic weed is :

A

Azolla

B

Wolffia

C

Eichornia

D

Trapa

Text Solution

Verified by Experts

The correct Answer is:
c
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TRUEMAN BIOLOGY-NCERT Exemplar Questions +2 (ENVIRONMENTAL ISSUES )-MCQs
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  2. Compressed Natural Gas (CNG) is :

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  3. World's most problematic aquatic weed is :

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  4. Which of the followig causes bio magnifiction

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  5. The expanded from of DDT is

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  6. Which of the following material takes the longest time of biodegrad...

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  7. Choose the incorrect statement.

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  8. Among the following which one causes more indoor chemical pollution...

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  9. The green scum seen in the fresh water bodies is :

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  10. The loudness of a sound that a person can withstand without discomfort...

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  11. The major source of noise pollution , world wide is due to :

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  13. Catalytic converters are fitted into automobiles to reduce emission of...

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  14. Why is it necessary to remove sulphur from petroleum products?

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  15. Which one of the following impurities is easiest to remove from waste ...

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  16. Which one of the following diseases is not due to contamination of wat...

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

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  18. Algal blooms impart a distinct colour to water due to:

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  19. Match the items in column I and column II and choose the correct opti...

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  20. The textbook you came across Three Mile Island and Chernobyl disasters...

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