InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Ozone destroying reaction is `O_(3)+O rarr 2O_(2)` This ozone destroying reaction can be due to (I) `NO` , (II) `CFCs` , (III) `N_(2)` Select the correct gases.A. Only IIB. I,II and IIIC. Both I and IIID. Both I and II |
|
Answer» Correct Answer - D `O_(2)+UV "radiation" rarr O_(2)+O` `O_(3)+O rarr 2O_(2), Delta H=-390.0 kJ` In this process, heat is released into the atmosphere. NO also depletes `O_(3)` layere. `{:(NO+O_(3)toNO_(2)+O_(2)),(NO_(2)+Oto NO+O_(2)),(ulbar(O_(3)+Oto2O_(2)" ")):}` `NO` is produced by combustion in supersonic jets operating in the stratosphere. `CFSs` (chlorofluorocarbons as freons) are being used as refregerants and aerosols. They have very long lifetime and rise to the stratosphere in low concentrations, where they can absorb `UV` radiation and dissociate. `C Cl_(2)F_(2)+UV "radiation"to overset(● )(C) ClF_(2)+Coverset(● )(l)` `{:(overset(● )(C)Cl+O_(3)to Cloverset(● )(O)+O_(2)),(Cloverset(● )(O)+OtoCoverset(● )(l)+O_(2)+O_(2)),(O_(3)+Oto2O_(2)):}` |
|