Which of the following statements are True (T) or False (F)? Mark them and select the answer from the codes given below.
(I) Ozone is not responsible for greenhouse effect.
(II) Ozone can oxidize `SO_(2)` present in the atmosphere to `SO_(3)`
(III) Ozone hole is thinning of ozone layer present in stratosphere.
(IV) Ozone is produced in the upper stratosphere by the action of `UV` rays on oxygen.

Options

A. `I=F,II=T,III=T,IV=T`
B. `I=T,II=F,III=T,IV=F`
C. `I=F,II=F,III=T,IV=T`
D. `I=T,II=T,III=F,IV=F`

Answer

A

Explanation

(I) There are several gases that are even stronger `IR` absorbers than `CO_(2)`.These are `CH_(4),O_(3),N_(2)` and `CFC`.
Thus, these gases are responsible for greenhouse effect. Thus, given statement is false.
(II) `SO_(2)+O_(3) rarr SO_(3)+O_(2)` (true)
(III) True
(IV) `O_(2) overset(hv)underset(lambda lt 2420Å)(rarr)2[O]`
`O_(2)+O rarr O_(3)` (true).