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The limit of BOD prescribed by the Centr...

The limit of BOD prescribed by the Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters is

A

`lt100` ppm

B

`lt30` ppm

C

lt3.0` ppm

D

`lt10` ppm

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
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  5. Which one of the following is not used for construction of ecological ...

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  6. Which of the following pairs of an animal and a plant represents endan...

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  8. Which of the fo llowing is not included under in situ conservation?

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  9. Which of the following is correctly matched pair of an endangered anim...

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  10. Which of the following is considered a hot-spot of biodiversity in Ind...

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  11. The Montreal Protocol refers to

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  12. Keystone species deserve protection because these (a) are capable of ...

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  13. In India, we find mangoes with different flavours, colours, fibre con...

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  14. Two plants can be conclusively said to belong to the same species if t...

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  15. Identify the odd combination of the habitat and the particular animal ...

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  16. Which one of the following ecosystem ecosystem types has the highest a...

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  17. In a coal-fired power plant, electrostatic precipitators are installed...

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  18. Which is a bioidicator of water pollution

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