Tag: soil properties

Questions Related to soil properties

The depth of the percolation tank is limited to the .......... of the height between bed level and full storage level.

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Half

  2. One fourth

  3. One third

  4. Same

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Correct Option: B
Explanation:
Percolation tank is an artificially created surface water body, submerging in its reservoir a highly permeable land so that surface runoff is made to percolate and recharge the ground water storage. The size of percolation tank should be governed by percolation capacity of strata in the tank bed and the cut-off trench is to be provided below the earthen bund with depth limited to one-fourth of the height between bed level and full storage level. 
So, the correct answer is option B.

Which soil has highest absorption rate?

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Clayey

  2. Loamy

  3. Sandy

  4. None of the above

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Correct Option: A

If a soil sample has a greater number of fine particles. It has greater 

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Porosity

  2. Absorption

  3. Percolation

  4. None of the above

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Correct Option: B

The lower percolation rate refers that the soil

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Can hold water for less time

  2. Can hold water for more time

  3. Cannot hold water

  4. None of the above

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Correct Option: B
Explanation:

Percolation rate of a soil is the water absorption rate of the soil. It depends on the composition of the soil. It is different for different types of soil. Hence, it helps in selection of proper soil for the crop growth. Soil with lower percolation has high water retention capacity whereas soil with high percolation has low water retention capacity. Lower percolation rate refers that the soil can hold water for more time while higher percolation rate refers that the soil can hold water for less time. 

Thus, the correct answer is option B. 

The type of soil which can hold water for more time have 

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Lower percolation rate

  2. Higher percolation rate

  3. Intermediate percolation rate

  4. None of the above

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Correct Option: A
Explanation:

Percolation rate of a soil is the water absorption rate of the soil. It depends on the composition of the soil. It is different for different types of soil. Hence, it helps in selection of proper soil for the crop growth. Soil with lower percolation has high water retention capacity whereas soil with high percolation has low water retention capacity. Lower percolation rate refers that the soil can hold water for more time while higher percolation rate refers that the soil can hold water for less time. 

Thus, the correct answer is option A. 

The rate of water absorption by the soil defines the 

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Rate of water movement

  2. Rate of seeping

  3. Rate of percolation

  4. Rate of absorption

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Correct Option: C
Explanation:

Percolation rate of a soil is the rate of water absorption by the soil. It depends on the composition of the soil. It is different for different types of soil. Hence, it helps in selection of proper soil for the crop growth. Soil with lower percolation rate has high water retention capacity whereas soil with high percolation rate has low water retention capacity. 

Thus, the correct answer is option C. 

The principal cation in alkaline soil is

biology soil : our life soil properties soil - properties basics of soil pollution

  1. $Na^{+}$

  2. $K^{+}$

  3. $Ca^{2+}$

  4. Either of these

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Correct Option: C

Physical and chemical conditions of soil are studied under

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Topographic factors

  2. Edaphic factors

  3. Biotic factors

  4. Climatic factors

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Correct Option: B

Good soil is the one which

biology soil : our life soil properties soil - properties basics of soil pollution

  1. Allows water to percolate slowly

  2. Allows water to pass quickly

  3. Allows limited amount of water into it

  4. Holds whole of water entering it

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Correct Option: A

What is best pH of soil for cultivation?

biology soil : our life soil properties soil - properties basics of soil pollution

  1. 3.4 to 5.44

  2. 5 to 5.5

  3. 5.5 to 6.5

  4. 6.5 to 7.5

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Correct Option: C
Explanation:

The optimal pH range for cultivation is between 5.5 and 7.0