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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: - Which one of the following statements is true about archaea?
- Wilting of plant is due to
- The lowest water potential is found in
- Cirrhosis of the liver is caused by
- Percentage of recombination between A and B is 9%, A and C is 17%, B and C is 26%,
Topics: Evolution
(132)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following statements is true about archaea?
- Wilting of plant is due to
- The lowest water potential is found in
- Cirrhosis of the liver is caused by
- Percentage of recombination between A and B is 9%, A and C is 17%, B and C is 26%,
Topics: Evolution (132)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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