Consider the following reactins involving some atmospheric pollutants.
`NO + O_(3) to NO_(2) + O_(2) overset(hv) to NO + O_(3)`
`4NO _(2) + O _(2) + 2H_(2)O to 4HNO_(3)`
`3CH_(4) + 2O_(3) to 3H_(2) C=O+ 3H_(2)O`
Based on the above, the formation of formaldehyde from methane in the atmosphere will be controlled by,

Options

A. Only `O_3`
B. `O_3 " and : NO_2`
C. `O_3 , NO " and " NO_2`
D. NO and `NO_2 `

Answer

C

Explanation

Following reaction involving some atmospheric pollutants :
`NO + O_3 to NO_2 + O_2 overset(hv)(to) NO + O_3`
`4NO_2 + O_2 + 2H_2O to 4HNO_3`
`3CH_3 + 2O_2 to 3CH_2O + 3H_2O`
The formation of formaldehyde `(CH_2O)` from methane `(CH_4)` in the atmosphere will be controlled by `OH_3`, NO and `NO_2` .