Important Soil Science MCQs for ASRB NET

 

Important Soil Science MCQs for ASRB NET – Set 1

1. The parent material of soil is known as:
   • A. Topsoil
   • B. Subsoil
   • C. Regolith
   • D. Bedrock
2. The most weatherable mineral is:
   • A. Quartz
   • B. Olivine
   • C. Muscovite
   • D. Kaolinite
3. Which horizon is also known as the zone of eluviation?
   • A. A
   • B. B
   • C. C
   • D. O
4. The CEC of humus is approximately:
   • A. 10 meq/100g
   • B. 30 meq/100g
   • C. 100 meq/100g
   • D. 200 meq/100g
5. The process of soil formation from parent material is called:
   • A. Pedogenesis
   • B. Lithogenesis
   • C. Humification
   • D. Mineralization