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