MCQs Soil Science-53 Posted on June 27, 2025August 30, 2025Author agropublishers 0 1. Availability of __________ increased in alkaline soils Zinc Molybdenum Copper Iron 2. NDVI is an abbreviation of __________ Nitrogen Density Vegetation Indicator Nutrient Deficiency Verification Instrument None of these Normalized Difference Vegetation Index 3. Micronutrients are required in small amounts and normally constitute __________ of a plant’s dry weight Less than 500 mg kg –1 (0.05%) None of these More than 10,000 mg kg –1 (1.0%) 1000 mg kg –1 (0.1%) or more 4. What type of soil particle is known for its poor water infiltration and drainage? Clay Loam Sand Silt 5. What is the primary gaseous product lost from soil due to the volatilization of nitrogenous fertilizers? Ammonia gas (NH₃) Nitrogen gas (N₂) Nitrogen dioxide (NO₂) Nitric oxide (NO) 6. _________ is commonly used for collecting soil samples from the field Soil auger Penetrometer Soil moisture meter Soil gauge 7. Aluminum toxicity is a major concern in ______________ soils Acidic Sodic Neutral Alkaline 8. Siderophores, produced by soil biota, are primarily _______________ Iron transporting and chelating compounds Plant growth regulators Broad-spectrum antibiotics High molecular weight compounds 9. Volatilization loss of nitrogen (N) is relatively higher in _______ soils Sandy soils Acidic soils Alkaline soils Clayey soils 10. __________ is commonly used to determine potassium content in soil and plant samples. Flame photometer pH meter EC meter Spectrophotometer Loading … Question 1 of 10
