Soil is the topmost layer, 4/5 area of land and it is composed of 45% of minerals and inorganic contents, 50% air and water and 5% organic matter. The formation of soil involves humification, eluviation, and illuviation. The transported soil is brought from other places gravity. Minerals of the soil come by weathering of rocks. There is soil on the basis of soil texture like clay, silt, sand, loamy, etc. So take this quiz and know more about soil.
1. Which of the following has the high water holding capacity?
A. Sand
B. Silt
C. Clay
D. Loamy
2. What is the size of the particles of clay?
A. Less than 2nm
B. Less than 0.2nm
C. Less than 0.02nm
D. Lesson than 0.002nm
3. Which one of the following less water holding capacity and not fertile in nature?
A. Clay
B. Fine sand
C. Loan soil
D. Silt
4. Which soil is best soil for plants?
A. Clay
B. Sand
C. Loam soil
D. Coarse sand
5. Which of the following is derived from dead living organisms?
A. Mineral
B. Organic matter
C. Both of these
D. None of these
6. Which of the following is freshly dead and partially decomposed plant and animal Residue?
A. Humus
B. Litter
C. Mineral
D. Water
7. Which one of the following is the dark-colored, amorphous, colloidal substance which determines the type of soil?
A. Humus
B. Mineral
C. Litter
D. Source of energy
8. Which one of the following makes the soil porous and provides nutrients for plant growth?
A. Water
B. Air
C. Litter
D. Humus
9. Which of the following provides for mineral and salt to enter into plants?
A. Air
B. Water
C. Humus
D. Detritus
10. Loamy soil is the mixture of.......
A. Silt
B. Clay
C. Sand and humus
D. All of these
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