Soil Chemical Properties MCQs (Quiz 8)

1. Incorporation of compost in polluted soil improves its remediation by _______

 Enhancing microbial activity

 Reducing nutrients

 Increasing toxicity

 Increasing leaching

2. Electrical conductivity (EC) is an indicator of _______ in soil

 Soil organic matter content

 Soil aeration status

 Soil structure stability

 Soluble salt concentration

3. Which condition promotes displacement of base cations from exchange sites?

 Low rainfall

 High base saturation

 High rainfall and leaching

 Dry conditions

4. Soils with high cation exchange capacity (CEC) generally exhibit _______

 High nutrient retention capacity

 Poor buffering capacity

 Low inherent fertility

 Rapid nutrient leaching

5. Soil sodicity is associated with high levels of _______

 Calcium

 Magnesium

 Exchangeable sodium

 Potassium

6. Gypsum application is most effective in reclaiming _______ soils

 Saline soils

 Sodic soils

 Acidic soils

 Peaty soils

7. Nutrient availability in soils is most strongly controlled by _______

 Soil pH

 Soil depth

 Soil temperature

 Soil color

8. Soil organic carbon is a key indicator of _______

 Soil density

 Soil temperature

 Soil fertility and biological activity

 Soil color

9. Unlike lime, gypsum _______ soil pH significantly

 Does not change

 Raises

 Lowers

 Stabilizes at neutral

10. Soil pollution affects food safety by _______

 Introducing contaminants

 Improving quality

 Enhancing yield

 Reducing nutrients

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