- 1(current)
Q. No.In the solar system of the milky-way galaxy, the earth was supposed to have been formed about:
| 1. | 20 billion years back | 2. | 10 billion years back |
| 3. | 4.5 billion years back | 4. | 3.0 billion years back |
Subtopic: Origin of Life |
80%
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Oparin of Russia and Haldane of England proposed that:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
| II: | The formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Origin of Life |
88%
From NCERT
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- 1(current)
Q. No.
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