BASIC SOIL SCIENCE (CSES 2040) EXAM (ALL COMPLETE &
100% SOLVED) GRADED A+ - AUBURN UNIVERSITY
Name: Date
This test has 1-45 multiple choice questions of equal weights with only one correct answer per question. Please
mark the correct answer on the scan sheet using a # 2 pencil. Erase completely if you change your choice, and
leave no stray marks. There are five calculations (46-50) at the end this test that carry two points each. Use the
following molecular weights: H=1, C=12, N=14, O=16, Na=23, Mg=24, Al=27, P=31, S=32, K=39, Ca=40 if
necessary.
1. Under normal conditions, the partial pressure O2 will be greater in the soil air whereas that of CO2 will be greater in air
atmosphere.
a. True b. False
2. Soil aeration can be improved by:
a. increasing compaction b. increasing macropores c. increasing moisture content d. all of the above.
3. Soil aerobic respiration takes place under limited free O2 whereas anaerobic takes place under plenty of free O2.
a. True b. False
4. Which of the following is true about soil content of CO2?
a. As soil depth increases, CO2 decreases b. As soil depth increases, CO2 increases
c. Soil CO2 is inversely proportional to soil N2 d. a and c
5. Ammonium nitrate (NH4+) oxidation to NO3- is accomplished by the presence of O2 and soil microbes. What will
100% SOLVED) GRADED A+ - AUBURN UNIVERSITY
Name: Date
This test has 1-45 multiple choice questions of equal weights with only one correct answer per question. Please
mark the correct answer on the scan sheet using a # 2 pencil. Erase completely if you change your choice, and
leave no stray marks. There are five calculations (46-50) at the end this test that carry two points each. Use the
following molecular weights: H=1, C=12, N=14, O=16, Na=23, Mg=24, Al=27, P=31, S=32, K=39, Ca=40 if
necessary.
1. Under normal conditions, the partial pressure O2 will be greater in the soil air whereas that of CO2 will be greater in air
atmosphere.
a. True b. False
2. Soil aeration can be improved by:
a. increasing compaction b. increasing macropores c. increasing moisture content d. all of the above.
3. Soil aerobic respiration takes place under limited free O2 whereas anaerobic takes place under plenty of free O2.
a. True b. False
4. Which of the following is true about soil content of CO2?
a. As soil depth increases, CO2 decreases b. As soil depth increases, CO2 increases
c. Soil CO2 is inversely proportional to soil N2 d. a and c
5. Ammonium nitrate (NH4+) oxidation to NO3- is accomplished by the presence of O2 and soil microbes. What will
