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Q: The value of group index of a soil varies from: किसी मिट्टी के समूह सूचकांक का मान होता है-
  • A. 0 to 10
  • B. 20 to 30
  • C. 30 to 40
  • D. 0 to 20
Correct Answer: Option D -
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Explanations:

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