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Read the following questions carefully and answer them. 

Q:

एल्युमीनियम का प्रमुख अयस्क क्या है?

  • 1
    डोलोमाइट
  • 2
    ताँबा
  • 3
    लिग्नाइट
  • 4
    बॉक्साइट
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Answer : 4. "बॉक्साइट"

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