Tag: soil - properties

Questions Related to soil - properties

The water content of soil is defined as the ratio of

  1. Volume of water to volume of voids in soil

  2. Volume of water to volume of given soil

  3. Weight of water to weight of solids of given mass of soil

  4. Weight of water to weight of air in voids


Correct Option: C
Explanation:

Explanation: Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, fruit, or wood. The water content of soil is defined as the ratio of weight of water to weight of solids of given mass of soil.

Clay has ____ permeability and ____ porosity.

  1. High - high

  2. High - low

  3. Low - high

  4. Low - low


Correct Option: C
Explanation:

Explanation: Clay can have a very high porosity. Because its grains are very small, there are a lot of (small) pore spaces in between them. What clay does not have is good permeability, which is a measure of how "connected" these pore spaces are. Clay can hold a lot of water, but it doesn't let it flow very well.

The process of turning and loosening of soil is called __________

  1. Tilling

  2. Harvesting

  3. Threshing

  4. Irrigation


Correct Option: A
Explanation:

The process of turning and loosening of soil is called ploughing or tilling. Harvesting is the process of cutting the crop and gathering them to transport it to the market. Threshing is the process of separating the chaff from the grain. Irrigation is the process of watering the plants in a field.

Which of the following can be the possible unit to measure the rate of percolation?

  1. ml/min

  2. L/min

  3. Kg/sec

  4. Both A and B


Correct Option: D

Higher porosity enhances the 

  1. Fertility

  2. Percolation

  3. Texture

  4. All of the above


Correct Option: B

Most friable soil is

  1. Sand

  2. Clay

  3. Loam

  4. Parent material


Correct Option: A
Explanation:

Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide, or SiO2), usually in the form of quartz making it most friable.

A soil sample has high percolation due to

  1. Large number of pores

  2. Reduced pores

  3. Greater mineral content

  4. None of the above


Correct Option: A

Percolation is lowest in 

  1. Sandy soil

  2. Clayey soil

  3. Loamy soil

  4. None of the above


Correct Option: B

Calculate the rate of percolation by the given value.
Weight of the soil = 10g
Initial volume = 4ml
Final volume = 3ml

  1. 10%

  2. 5%

  3. 3%

  4. None of the above


Correct Option: A

Calculate the rate of percolation by the given value.
Weight of the soil = 30g
Initial volume = 60ml
Final volume = 30 ml

  1. 100%

  2. 20%

  3. 50%

  4. 60%


Correct Option: A