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World's most problematic aquatic weed is...

World's most problematic aquatic weed is

A

Azolla

B

Wolffia

C

Eichornia

D

Trapa

Text Solution

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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 following causes biomagnification

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  5. The expanded form of DDT is

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  6. Which of the following materials takes the longest time for biodegrada...

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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 freshwater bodies is

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  10. The loudness of a sound that a person can withstand discomfort is abou...

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

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  12. Match correctly the following and choose the correct option The corr...

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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 impuritites 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 ,bloomforming algae in natural water...

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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 optio...

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  20. In the textbook you came acroos Three Mile Island and Chernobyl disast...

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