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