In 2002 A.D. according to research the concentration of CFC reached to

368 ppm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1750 ppb

No worries! We‘ve got your back. Try BYJU‘S free classes today!

234 ppt

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

326 ppb

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 234 ppt
Chlorofluorocarbons have been synthesized in 20th century but due to their widespread use and long atmospheric residence (45 - 260 yrs), their concentration in atmosphere steadily rose to reach 282 ppt in the year 2000 itself.
Therefore, the correct answer is option C.

Suggest Corrections

Similar questions

2002

	Column I (Green house gases)		Column II (Concentration in 2000 AD)
A	$C O_{2}$	1	282 ppt
B	$C H_{4}$	2	316 ppb
C	$N_{2} O$	3	368 ppm
D	$C F C + H F C$	4	1750 ppb

1000 p p b, 40 p p b, 100 p p m

0.2 p p m

C F C, C H_{4}, N_{2} O

C O_{2}

Join BYJU'S Learning Program