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ICAR JRF Soil Science 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
If, bulk density (pb) and particle density (ps) of a soil are 1.5 Mg mand 2.5 Mg m®, respectively, then porosity (%) will be
EXPLANATION Soil Structure, Aggregate Stability, Bulk/Par
  • Formula for Total Soil Porosity:
$$\text{Porosity } (\%) = \left(1 - \frac{\rho_b}{\rho_s}\right) \times 100$$
  • Calculation:
$$\rho_b = 1.5\text{ Mg m}^{-3}$$ $$\rho_s = 2.5\text{ Mg m}^{-3}$$ $$\text{Porosity } (\%) = \left(1 - \frac{1.5}{2.5}\right) \times 100 = (1 - 0.60) \times 100 = 40\%$$
  • Conclusion: Soil porosity is 40%. (Correct answer: Option 1)
Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report
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