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