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Q. No.For primary abiogenesis, Oparin opined that the primeval Earth atmosphere lacked:
1. Hydrogen
2. Free oxygen
3. Methane
4. Ammonia
1. Hydrogen
2. Free oxygen
3. Methane
4. Ammonia
Subtopic: Â Cosmic Evolution |Â Origin of Life: Chemical Evolution: 1 |Â Origin of Life: Chemical Evolution: 2 |
 93%
Level 1: 80%+
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Subtopic: Â Cosmic Evolution |Â Other Theories of Origin of Life |
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Which of the following statement is incorrect with reference to origin of life?
| 1. | Origin of life is considered as a unique event in the history of universe |
| 2. | Origin of life has relation with the origin of earth |
| 3. | There has been a gradual evolution of life forms after origin of life |
| 4. | Origin of life occurred simultaneously in water as well as in terrestrial conditions |
Subtopic: Â Cosmic Evolution |Â Examples of Chemical Evolution |
 86%
Level 1: 80%+
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After about how many years of the formation of the earth, life appeared on this planet?
1. 500 billion years
2. 50 million years
3. 500 million years
4. 50 billion years
Subtopic: Â Cosmic Evolution |Â Other Theories of Origin of Life |
 81%
Level 1: 80%+
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Q. No.
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