Solved UPSC CDS/OTA Question
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Q · Internal Structure of The EarthMedium · 45s
Which seismic wave provides evidence for the existence of Earth’s liquid outer core?
TopicInternal Structure of The Earth
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Shadow zones of S-waves prove the outer core is liquid.
Final Answer: Option C — S-waves do not travel through the outer core.