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