This quiz works best with JavaScript enabled. Home > Soil Science > Soil Chemistry – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Soil Chemistry Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Is loamy soil good for growing plants? A) Yes, it is the best. B) Yes, but only when it is in a pot. C) No, it holds too much water. D) No, it does not hold enough water. Show Answer Correct Answer: A) Yes, it is the best. 2. What is the main component of soil? A) Humus. B) Water. C) Air. D) Rock particles. Show Answer Correct Answer: D) Rock particles. 3. What is the only process that removes carbon from the atmosphere? A) Combustion. B) Cellular respiration. C) Photosynthesis. D) Decomposition. Show Answer Correct Answer: C) Photosynthesis. 4. How do animals get the nitrogen they need? A) From the air they breathe. B) From the water they drink. C) From the food they eat. D) From the sun. Show Answer Correct Answer: C) From the food they eat. 5. PH is important because A) It determines a soil's suitability for life. B) It determines whether nutrient elements are at optimal, deficient, or toxic levels. C) It determines the fate of soil pollution. D) All answers are correct. Show Answer Correct Answer: D) All answers are correct. 6. What is the role of soil microorganisms? A) Make soil porous. B) Make soil rich in humus. C) Both the above options. D) None of above. Show Answer Correct Answer: B) Make soil rich in humus. 7. It is the loss of soil by the action of both water and wind. A) Soil Erosion. B) Deforestation. C) Desertification. D) Transpiration. Show Answer Correct Answer: A) Soil Erosion. 8. If the atmosphere is 78% N2, why can't we just get our nitrogen by breathing? A) We have no mechanism to break the triple bond of nitrogen between the atoms. B) Our lungs would be damaged by the N2. C) We need Oxygen for cellular respiration. D) The legumes take it up first. Show Answer Correct Answer: A) We have no mechanism to break the triple bond of nitrogen between the atoms. 9. The alternate freezing and thawing ofthe water during the winter causes the cracks to enlarge, breaking off small pieces of rocks. A) Topography. B) Climate. C) Organism. D) Time. Show Answer Correct Answer: B) Climate. 10. The following are products of decomposition except: A) Carbon dioxide. B) Water. C) Nutrient minerals. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 11. Soil water has certain functions in the soil. A) Anchors the roots. B) Infiltration. C) Increases Cation Exchange Capacity. D) None of above. Show Answer Correct Answer: B) Infiltration. 12. Which type of soil has the largest particles? A) Sand. B) Silt. C) Clay. D) Loam. Show Answer Correct Answer: A) Sand. 13. Which of the following soil has the smallest particles A) Clayey Soil. B) Loamy Soil. C) Sandy Soil. D) Silt Soil. Show Answer Correct Answer: A) Clayey Soil. 14. Toys, Pots and Statues are made of which soil type? A) Sandy Soil. B) Clayey Soil. C) Loamy Soil. D) None of these. Show Answer Correct Answer: B) Clayey Soil. 15. Water cannot penetrate through which layer? A) B-Horizon. B) Bedrock. C) O-Horizon. D) A-Horizon. Show Answer Correct Answer: B) Bedrock. 16. Which layer is interaction between A-Horizon and B-Horizon A) E-Horizon. B) Bedrock. C) 0-Horizon. D) C-Horizon. Show Answer Correct Answer: A) E-Horizon. 17. What is sandy soil A) Containing greater proposition of big particles. B) Have fine particles relatively higher. C) The mixture of sandy and clayey soil. D) A bedrock. Show Answer Correct Answer: A) Containing greater proposition of big particles. 18. A solution with a pH greater than 7 would be considered: A) Neutral. B) Alkaline/basic. C) Acidic. D) None of above. Show Answer Correct Answer: B) Alkaline/basic. 19. In which soil does the water seeps out very fast A) Loamy soil. B) Sandy Soil. C) Clayey Soil. D) Silt Soil. Show Answer Correct Answer: B) Sandy Soil. 20. The presence or absence of mountains and valleys, is also involved in soil formation. A) Topography. B) Time. C) Climate. D) Organism. Show Answer Correct Answer: A) Topography. Next →Related QuizzesSoil Chemistry Quiz 2Soil Chemistry Quiz 3Soil Chemistry Quiz 4Soil Chemistry Quiz 5Soil Chemistry Quiz 6Fundamentals Of Soil Science QuizSoil Science Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books