UPSC Prelims 2005·GS1·geography·climatology

Existence of human life on Venus is highly improbable. Venus has extremely high level of carbon dioxide in its atmosphere.

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  1. AExistence of human life on Venus is highly improbable. Venus has extremely high level of carbon dioxide in its atmosphere.Correct
  2. BExistence of human life on Venus is highly improbable. Venus has extremely high level of carbon dioxide in its atmosphere.
  3. CA is true but R is false
  4. DA is false but R is true

Explanation

Statement A: "Existence of human life on Venus is highly improbable." This is true. Venus has extremely hostile conditions including scorching surface temperatures (hot enough to melt lead), crushing atmospheric pressure, and a toxic atmosphere, all of which are incompatible with human life. Statement R: "Venus has extremely high level of carbon dioxide in its atmosphere." This is also true. Venus's atmosphere is over 96% carbon dioxide. Explanation: The extremely high level of carbon dioxide in Venus's atmosphere is a primary reason for its uninhabitable conditions. Carbon dioxide is a potent greenhouse gas, leading to a runaway greenhouse effect that results in Venus's extremely high surface temperatures. Additionally, a pure carbon dioxide atmosphere is unbreathable and toxic to humans. Therefore, the high level of carbon dioxide directly contributes to making human life on Venus highly improbable. Since both statements are true and R provides a correct explanation for A, option A is the correct answer.
geography: Existence of human life on Venus is highly improbable. Venus has extremely high level of carbon dioxide in its atmospher
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