MCQs Soil Science-46 Posted on May 5, 2025August 30, 2025Author agropublishers 0 1. Which of the following is the primary indicator of soil health? Soil temperature Soil texture Soil organic carbon Soil color 2. Which process competes with mineralization for nitrogen? Denitrification Immobilization Nitrification Volatilization 3. The mass of ONE mole of K2HPO4 is approximately ________ grams 348.2 174.17 136.1 89 4. _________ is vital for nitrogen fixation in soil E. coli Lactobacillus Streptococcus Rhizobium 5. Sulfur mineralization is the process by which microorganisms break down organic sulfur compounds in the soil, releasing _________ Sulfate ions (SO₄²⁻) Elemental S SO₂ H₂S 6. Ammonification is the process by which microorganisms break down organic matter and can release _________ as an end product NH₄⁺ N₂ NO₃⁻ N₂O 7. The conversion of organic nitrogen to inorganic nitrogen (ammonia) is called_________ Ammonification Nitrification Immobilization Mineralization 8. ___________ element is not released through mineralization Aluminum (Al) Carbon (C) Phosphorus (P) Nitrogen (N) 9. The “Global Soil Partnership” (GSP) was launched by _________________ World Bank USAID FAO UNDP 10. Which soil pH range is more suitable for nitrification? 3.0–5.0 <3.0 8.5–10.0 6.5–8.0 Loading … Question 1 of 10
