| ⇦ | 
| ⇨ |
In the primitive atmosphere which was not available in free state?
Options
(a) CH₄
(b) H₂
(c) O₂
(d) H₂O
Correct Answer:
O₂
Explanation:
The early atmosphere was without free oxygen, so atmosphere was reducing in nature. It only contained hydrogen, methane, ammonia and water vapours. At present free oxygen is present so atmosphere is oxidising in nature.
Related Questions: - Given below is a sample of a portion of DNA strand. What is so special shown in it
- Which of the following groups represents the al members of phaeophyceae
- Adaptive radiation refers to
- Which of the following sugar is found in nucleic acid?
- Gibberellin promote
Topics: Evolution
(132)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Given below is a sample of a portion of DNA strand. What is so special shown in it
- Which of the following groups represents the al members of phaeophyceae
- Adaptive radiation refers to
- Which of the following sugar is found in nucleic acid?
- Gibberellin promote
Topics: Evolution (132)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply