Mineral soil contain organic carbon___________________?

Related Mcqs:

1. Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:

   A. 72 % B. 58% C. 62 % D. Al of the above Submitted by: Shafiq Rehman...

2. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

   A. Mull B. Mulch C. Mycorrhizae D. Muck Submitted by: Shafiq Rehman...

3. The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?

   A. 3-15 meq/100g CEC B. 40 meq/100g CEC C. 50 meq/100g CEC D. None of the above...

4. Which mineral contain phosphorus__________________?

   A. Igneous B. Metamorphic C. Apatite D. None of the above...

5. Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?

   A. 250ºC B. 1000ºC C. 550ºC D. 1250ºC...

6. Chlorophyll contain which mineral nutrient?

   A. Ca B. Mg C. S D. P Submitted by: Shafiq Rehman...

7. __________________ systems play a crucial role in increasing soil organic C storage and reducing net emissions of greenhouse gases in addition to soil erosion control:

   A. Engineering B. Agroforestry  C. Cultivating D. All of the above Submitted by: Shafiq Rehman...

8. A mineral horizon that is either too thin, too light in colour, too low in organic matter:

   A. Umbric epipedon B. Melanic epipedon C. Mollic epipedon D. Ochric epipedon Submitted by: Shafiq Rehman...

9. Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?

   A. Peat soil B. solonchalk soil C. Muck soil D. Both a and c Submitted by: Shafiq Rehman...

10. Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:

    A. 74 % B. 54 % C. 62.5 % D. 34% Submitted by: Shafiq Rehman...