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Composition of PAN is...

Composition of PAN is

A

`CH_2 = CH-CHO`

B

`CH_3-underset(O)underset(||)C-O-O-NO_2`

C

`HCHO`

D

`CH_3CH_2ONO`

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The correct Answer is:
B
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AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-OBJECTIVE EXERCISE - 1 (Definition of terms- Introduction)
  1. Identify the incorect statement

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  2. Gradual warming of the almospbere due to trapping of radia1ion of long...

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  3. Composition of PAN is

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  4. Match the following

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  5. Assertion (A) : The temperature in the thermosphere increases with alt...

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  6. (A): Ionosphere contains gases in the ionised form which form the base...

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  7. Assertion (A) : Rain water normally has a pH of 5.6. Reason (R) : Th...

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  8. (A): Smaller particles (Size < 5 microns) cause fibrosis of the lung l...

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  9. Among the following which is a contaminent

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  10. Which of the following is contaminant responsible for Bhopal gas trage...

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  11. A substance which is not present in nature but added to atmoshphere du...

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  12. Identification of a pollutant as organic, inorgamic (or) organometalli...

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  13. The medium which reacts wi lh pollutant is called

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  14. The sink for dead plants and animals is

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  15. Which of the following can act as sink for CO2 and SO2

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  16. Water is said to be polluted if the D.O value of water is less than

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  17. The amount of oxygen required for healthy growth of plants and animals...

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  18. A good quality of water will have

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  19. The amount of oxygen required to oxidise organic substance present in ...

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  20. Chemical oxygen demand is determined by using

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