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Q: What should be the activity ratio for active clays? सक्रिय मृतिका के लिए सक्रियता अनुपात क्या होगा
  • A. 0.75 - 1.25
  • B. >1.25
  • C. >0.75
  • D. 0.30 - 0.85
Correct Answer: Option B -
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Explanations:

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