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Question
Assertion (A): The lower part of the mantle is called asthenosphere.
Reason (R): Asthenosphere supplies the magma during volcanic eruption.
Options
Both A and R are true and R is the correct reason for A.
Both A and R are true but R is not the correct reason for A.
A is true and R is false.
A is false and R is true.
MCQ
Assertion and Reasoning
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Solution
A is false and R is true.
Explanation:
The asthenosphere is the upper, semi-molten part of the mantle that supplies magma. The lower mantle is the mesosphere, which is more solid and lies below the asthenosphere.
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