Soil Health MCQs (Quiz 14)

Soil Health MCQs (Quiz 14)
Multiple Choice Questions for Professional Test Preparation

1. Bulk density is commonly used to evaluate ________________

 Atmospheric humidity

 Soil structure and pore space

 Leaf chlorophyll concentration

 Wind erosion

2. Which soil property is most directly associated with biological activity in healthy soil?

 Soil color

 Sand percentage

 Earthworm population

 Water infiltration rate

3. Which of the following materials is a naturally occurring mineral used in potting mixes?

 Compost

 Vermiculite

 Fertilizer

 Concrete powder

4. Which amendment is most suitable for correcting alkaline soils?

 Limestone

 Gravel

 Elemental sulfur

 Gypsum board

5. Why is biochar commonly added to sandy soils?

 It improves water and nutrient retention

 It increases runoff losses

 It lowers nutrient absorption

 It decreases soil porosity

6. Compost is primarily made of _________

 Pure sand

 Recalcitrant organic matter

 Chemical waste

 Decomposed organic matter

7. Continuous use of chemical fertilizers without organic matter may lead to __________

 Improved soil structure and aggregation

 Permanent and stable nutrient balance in soil

 A decline in soil microbial activity and diversity

 Enhanced natural resistance to soil-borne pests

8. Nutrient imbalance in soil can reduce crop yield primarily because it __________

 Completely prevents water absorption

 Disrupts normal plant metabolic processes

 Inhibits performance of soil biota

 Increases soil oxygen levels excessively

9. Potassium deficiency in plants commonly causes ____________

 Dark green roots

 Leaf edge scorching and yellowing

 Rapid fruit enlargement

 Strong stem development

10. Immobilization commonly occurs when soil microorganisms ___________

 Convert minerals directly into gases

 Decrease organic matter content

 Release excess nutrients into the air

 Use available nutrients during decomposition

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