Quiz on Soil ScienceQuiz 2 - January 4, 2021 | January 4, 2021 - AgriScan 1 minute read QUIZ STARTResults #1. Capacity of soil to produce crops with specific management is known as _________? LUE LCC Fertility Productivity #2. What is the diameter of soil particles called gravel? 0.002mm 2-20 mm 20mm 2mm #3. Application of silt to soil is called ________? Manuring Linning Marling Wrapping #4. Which of the soil structure hinder downward movement of water? Platy Blocky Prismatic Granular #5. The latent heat of sublimation of water is _________? 680 cal/g 80 cal/g 540 cal/g 900 cal/g #6. General value of surface tension of water is ______? 720 dynes/cm 72 dynes/cm 7200 dynes/cm 7.2 dynes/cm #7. The amount of heat required to increase the temperature of one gram of substance by 1 degree Celsius is called ________?? Thermal conductivity Heat capacity Specific heat Latent heat #8. Optimum soil temperature for nodulation in legumes? 34 degree celcius 10 degree celcius 20 degree celcius 24 degree celcius #9. The oxygen content of soil must be above ________% for crop growth? 20 10 25 5 #10. Specific surface area for silt particles is _________? 1000 m2/g 1 m2/g 0.1 m2/g 10 m2/g #11. The main process of gases exchange between soil and atmosphere is called _______? mass flow Vapour pressure Conduction Diffusion #12. Number of pores approximately highest in which type of soil? Loamy Silty Sandy Clayee #13. which Electrode used for measuring ODR? Platinum Graphite Gold Silver #14. Which of the following horizon is absent in cultivated soil? C-horizon B-horizon O-horizon A-horizon #15. Which of the following horizons together called true soil or solum? O+A A+B B+C A+B+C #16. Relative purity and strength of dominant spectral colour in Munsell colour chart? Spectrum Chroma Hue Value #17. Optimum pH for P availability is ________? 7 - 9 6 - 7 4 - 6 6 - 8 #18. Which value does not coincide with alkali soil? None > 8.5 pH > 4 EC ESP > 15 #19. Gypsum equivalent of sulphur is ________? 0.85 0.57 0.19 1.29 #20. The process of dealkalization is also called _______? Solodization Pozolization Alkalization Solonization Previous Finish
