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6. | What is Black hole? | |
A. | Super surface of the atmosphere | |
B. | Ozone layer | |
C. | Super dense planetary material | |
D. | A hole on the surface of the earth | |
Answer: Option C | |
Explanation: | |
Black hole is a super dense planetary material formed due to the continued compression the core of a star during a supernova explosion. |
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