SOIL 1113 EXAM 2 QUESTIONS AND
ANSWERS 100% PASS 2026/2027
As the H+ concentration in the soil solution decreases, the soil becomes more: - ANS basic
True or False: The finer the liming material, the more effective it is in adjusting the pH of the
soil. - ANS true
Which of the following can be added to the soil to raise the soil pH to a desired level? -
ANS CaCO3
What charge does the soil normally have? - ANS negative
True or False: Most plant nutrients are in plant-available forms at circumneutral pH. -
ANS true
True or False: Ions that are stored on the surfaces of changed particles are practically stuck in
the soil forever. - ANS false
True or False: The mobility of pollutants in the soil can change by adjusting soil pH. - ANS true
True or False: Water quality impairment in lakes and rivers is largely a result of activities done in
upland areas. - ANS true
2026/2027 ALLRIGHTS RESERVED
1
, True or False: Most of the water on earth cannot be utilized for ordinary day-to-day human
uses. - ANS true
Most of the water that we use for human use in the U.S. is drawn from: - ANS surface-water
True or False: The lower the initial moisture content of the soil (prior to a rain event,) the more
likely runoff will occur. - ANS False
True or False: Windbreaks can reduce evaporation loss but will tend to promote transpiration
loss. - ANS False
What is achieved right after all the gravitational water is lost or drained? - ANS Field Capacity
True or False: At the Permanent wilting point, the soil still has some water. - ANS true
True or false: One should wait until the permanent wilting point is reached before applying
irrigation water. - ANS False
Which of the following soils would require more frequent irrigation? Loamy sand or sandy clay -
ANS loamy sand (larger particles)
The most sustainable source of water for human consumption is: - ANS surface water
(replenishes faster than groundwater)
True or False: Activities that we do with the soil at the land surface could potentially affect eh
quality of the groundwater. - ANS true
True or False: The best time to apply irrigation is after the permanent wilting point is achieved. -
ANS False
2026/2027 ALLRIGHTS RESERVED
2
ANSWERS 100% PASS 2026/2027
As the H+ concentration in the soil solution decreases, the soil becomes more: - ANS basic
True or False: The finer the liming material, the more effective it is in adjusting the pH of the
soil. - ANS true
Which of the following can be added to the soil to raise the soil pH to a desired level? -
ANS CaCO3
What charge does the soil normally have? - ANS negative
True or False: Most plant nutrients are in plant-available forms at circumneutral pH. -
ANS true
True or False: Ions that are stored on the surfaces of changed particles are practically stuck in
the soil forever. - ANS false
True or False: The mobility of pollutants in the soil can change by adjusting soil pH. - ANS true
True or False: Water quality impairment in lakes and rivers is largely a result of activities done in
upland areas. - ANS true
2026/2027 ALLRIGHTS RESERVED
1
, True or False: Most of the water on earth cannot be utilized for ordinary day-to-day human
uses. - ANS true
Most of the water that we use for human use in the U.S. is drawn from: - ANS surface-water
True or False: The lower the initial moisture content of the soil (prior to a rain event,) the more
likely runoff will occur. - ANS False
True or False: Windbreaks can reduce evaporation loss but will tend to promote transpiration
loss. - ANS False
What is achieved right after all the gravitational water is lost or drained? - ANS Field Capacity
True or False: At the Permanent wilting point, the soil still has some water. - ANS true
True or false: One should wait until the permanent wilting point is reached before applying
irrigation water. - ANS False
Which of the following soils would require more frequent irrigation? Loamy sand or sandy clay -
ANS loamy sand (larger particles)
The most sustainable source of water for human consumption is: - ANS surface water
(replenishes faster than groundwater)
True or False: Activities that we do with the soil at the land surface could potentially affect eh
quality of the groundwater. - ANS true
True or False: The best time to apply irrigation is after the permanent wilting point is achieved. -
ANS False
2026/2027 ALLRIGHTS RESERVED
2
