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Question
Assertion: Fe is more abundant than C on earth.
Reason: Fe is a volatile element, whereas C is non-volatile.
Options
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.
If Assertion is CORRECT but Reason is INCORRECT.
If Assertion is INCORRECT but Reason is CORRECT.
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Solution
If Assertion is CORRECT but Reason is INCORRECT.
Explanation:
Fe (iron) is indeed more abundant than C (carbon) on the Earth, mainly because the Earth's core and crust contain large amounts of iron. However, the given reason is incorrect. Fe is not a volatile element; in fact, it is a refractory element (non-volatile). Carbon is also non-volatile. Volatility refers to the tendency to vaporise at lower temperatures, and iron has a very high melting and boiling point, so it is not volatile. Therefore, the abundance of Fe on Earth is due to its cosmochemical and geological abundance, not because it is volatile.
