WorksheetsSoil Properties MCQ Exam
Total questions: 25
Worksheet time: 13mins
Which soil separate has the highest surface area per gram?
Sand
Silt
Clay
Gravel
The sticky and plastic property of soil is primarily due to:
Sand
Silt
Clay
Organic matter
In the Munsell Color System, the term "hue" refers to:
Lightness or darkness
Purity or intensity of color
Dominant spectral color
Soil drainage condition
A soil with a notation of 5YR 3/4 has "3" representing:
Hue
Value
Chroma
Intensity
Which soil color generally indicates high organic matter content?
Gray
Red
Dark brown to black
Yellow
A poorly-drained soil commonly exhibits:
Reddish color
Black color
Gray mottles
Yellowish color
Which structural type is best for favorable plant growth?
Massive
Platy
Granular
Prismatic
Which soil structure is cube-like with sharp corners?
Angular blocky
Subangular blocky
Prismatic
Columnar
Columnar soil structure is similar to prismatic except that it has:
Flat tops
Rounded tops
No distinct shape
Single grains
The soil structure commonly seen in sandy soils is:
Massive
Single grain
Platy
Granular
Which soil property describes the cohesive and adhesive forces holding soil particles together?
Soil texture
Soil consistence
Soil structure
Soil porosity
Which soil moisture condition is described as "friable"?
Wet soil
Moist soil
Dry soil
Plastic soil
Which soil consistence term is associated with molding clay pots?
Hard
Friable
Plastic
Viscous
A soil is well-aggregated when it is rich in:
Sodium
Calcium
Potassium
Magnesium
Sodium-rich soils are often:
Well-aggregated
Dispersed
Granular
Friable
Particle density of most agricultural soils is approximately:
1.65 g/cm³
2.65 g/cm³
3.65 g/cm³
4.65 g/cm³
Which formula is used to compute bulk density?
Db = Ms/Vs
Db = Ms/Vt
Db = Vt/Ms
Db = Ms - Vs
A 100 cm³ soil core weighs 120 g when oven-dry. What is its bulk density?
1.2 g/cm³
12 g/cm³
0.12 g/cm³
2.1 g/cm³
If bulk density is 1.3 g/cm³ and particle density is 2.6 g/cm³, what is the porosity?
25%
35%
50%
65%
Which of the following decreases with soil compaction?
Bulk density
Porosity
Soil solids
Particle density
A soil with high bulk density generally indicates:
High porosity
Well-aerated soil
Compacted soil
Loose soil
Porosity is calculated as:
P = (Db/Dp) × 100%
P = 1 - (Db/Dp) × 100%
P = Dp/Db × 100%
P = (Db - Dp) × 100%
The water retained in soil after gravitational water has drained away is called:
Saturation
Field capacity
Hygroscopic water
Permanent wilting point
Which soil water form is unavailable to plants because it is tightly held to soil particles?
Capillary water
Hygroscopic water
Gravitational water
Available water
Which soil water is drained freely by gravity?
Capillary water
Gravitational water
Hygroscopic water
Saturation water
