wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following statements are correct?
I. Liberation of oxygen from water took place by the action of UV rays from the sun.
II. Free oxygen combined with methane and ammonia to form water, carbon dioxide and other gases.

A
Only I
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Only II
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Both I and II
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Both I and II are incorrect
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Both I and II
Statements I and II are correct.

Earth originated about 4.5 billion years ago.

The conditions of the primitive earth are as follows:

a. The primitive atmosphere on earth contained gases like ammonia, methane, and water vapour.

b. The ultraviolet radiation from the sun broke water into oxygen and hydrogen.

c. Hydrogen gas being lighter, escaped.

d. The oxygen released quickly reacted with methane and ammonia forming water, carbon dioxide and other gases.

e. The ozone layer was formed.

f. As temperature on the earth came down, the water vapour fell as rain, to fill all the depressions and thus, oceans were formed.

flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon