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Q:

रुधिर वर्ग का पता लगाया था :

  • 1
    विलियम हार्वे ने
  • 2
    लैंडस्टीनर ने
  • 3
    पॉवलोव ने
  • 4
    अलेग्जेंडर फ्लेमिंग ने
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Answer : 2. "लैंडस्टीनर ने"
Explanation :

There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.

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