MCQs Soil Science-59 Posted on November 30, 2025November 30, 2025Author agropublishers 0 MCQs Soil Science-59 1. Which of the following is NOT included in the soil organic matter (SOM) Plant residues Microbial biomass Humus Soil minerals 2. Humification is the process of ——— Mineralization of nitrogen Clay synthesis Acidification of soil Formation of humus 3. Lignin-rich materials decompose slowly in the soil False True 4. Soil organic matter contributes to the dark color of topsoil True False 5. Potassium is essential for drought tolerance in plants False True 6. A soil’s inherent nutrient content mainly determines—- All of these Productivity Drainage Fertility 7. Soil compaction increases soil productivity False True 8. Nutrient imbalance results in ———- All of these Poor Plant growth Nutrient Toxicity Nutrient Deficiencies 9. Good soil fertility significantly reduces the need for ——- Herbicides Excess fertilizers Excess irrigation Insecticides 10. Soil enzyme activity is highest in —— Saline soils Organic matter-rich soils Sandy soils Clayey soils Loading … Question 1 of 10
