MCQs Soil Science-55 Posted on August 23, 2025September 1, 2025Author agropublishers 0 MCQs Soil Science-55 1. What plays a crucial role in forming stable soil aggregates, thereby enhancing soil structure and reducing erosion? Soil microorganisms Plant roots All of these Earthworms 2. Soil pH is a measure of__________________ Hydrogen ion concentration Organic matter Soil water contents Nutrient content 3. ________is a key component of certain amino acids, which are crucial building blocks of proteins. Copper Potassium Sulfur Calcium 4. Water can play a crucial enabling role in strengthening the resilience of social, economic, and environmental systems in the face of rapid and unpredictable changes. False True 5. In the Earth’s atmosphere, the majority of nitrogen is present in the form of ____________ Ammonium ions (NH₄⁺) Ammonia (NH₃) Nitrogen gas (N₂) Nitrite ions (NO₂⁻) 6. Due to high _____________ and high rain intensity much of the rainfall is being lost through evaporation and runoff Salinity pH Temperature Drought 7. A soil solution with pH 7 is a _____ solution. Neutral Acidic None of these Basic 8. Better management of rainwater in rainfed systems can reduce excessive runoff, leading to soil erosion and poor yields due to a lack of soil moisture False False 9. Siderophores primarily increase the availability of ____________, a micronutrient, in calcareous soils Manganese Copper Zinc Iron 10. Shallow-rooted crops require__________ More frequent irrigation Less frequent irrigation Lower fertilizer application rates Higher fertilizer application rates Loading … Question 1 of 10