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The deepest drill, at Kola, has reached a depth of:
A12 km
B4 km
C30 km
D70 km
Answer & Solution
Correct answer: A. 12 km
1. It lies in the Arctic Ocean region.
2. Kola reached 12 km.
3. Samples from different depths were analysed.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 3, Interior of the Earth._
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