A) \[{{\operatorname{CO}}_{2}}\]
B) \[{{\operatorname{CH}}_{4}}\]
C) \[{{\operatorname{NH}}_{3}}\]
D) \[{{\operatorname{O}}_{2}}\]
Correct Answer: D
Solution :
\[{{\operatorname{O}}_{2}}\] On primitive earth only \[{{\operatorname{CO}}_{2}}, C{{H}_{4}} \And N{{H}_{3}}\]gases are present.
You need to login to perform this action.
You will be redirected in
3 sec
