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Fake sports Certificate scam revealed;Haryana State too under the scanner!

Question Bank (Other Gk Question)

Q.1196 :  निम्न में से सबसे सख्त कोन है?
(a) हीरा
(b) ग्लास
(c) कवार्टज
(d) प्लेटिनम
      
    
Answer : हीरा
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