Tag: evs

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Questions Related to evs

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Which of the following contains the smallest rock particles?

  1. Silt

  2. Clay

  3. Sand

  4. All contain equal sized particles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Clay soil particles are very small, packed very tightly and little space remain for air, water can be held in tiny space between the particles, so it has a good capacity to hold water. Thus, the correct option is C.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Loamy soil is a mixture of .......... known as silt.

  1. Sand

  2. Clay

  3. Another type of soil particle

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Loamy soil is a mixture of sand, clay and small types of other soil particles and the soil formed are known as silt. It is basically deposited on river beds. It is good for the growth of plants. Thus, the correct answer is D.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Percolation rate is highest in which of the following soil?

  1. Humus

  2. Clay soil

  3. Loamy Soil

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In humus, the percolation speed is very high. This means that more amount of substances are able to pass through it. Percolation rate is basically the rate at which the water moves through granular material. In humus, water moves very quickly. As a result, its percolation rate is very high.

So, option A is the correct answer.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation


Which of the following soil drains water easily?

  1. Loamy

  2. Clay

  3. Sandy

  4. Top soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sandy soil is made of sand particles that are rough in texture. This prevents them from sticking tightly together. The space between sand particles is large for water to flow through it. Hence sandy soil drains faster than other types of soil. Thus the correct answer is option C.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

......... is a mixture of sandy and clay.

  1. Humus

  2. Clayey

  3. Silt

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Loamy soil is a mixture of clay, sand and silt. Particles of loamy soil are smaller than sand and larger than clay. Loamy soil has also a good water holding capacity and suitable for plants growth. Thus, the correct answer is D.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Which of the following crop yields more if it is grown in clay and organic matter and having a good capacity to retain water ?

  1. Paddy

  2. Cotton

  3. Wheat

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Paddy crop yields more if it is grown in clay and organic matter and having a good capacity to retain water. Wheat crops yield more when it is grown in fine clayey soil because it is rich in humus and is very fertile. Cotton is grown in sandy and loamy soil, which drain water easily and hold plenty of air. Thus, the correct answer is A
Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Good soil is

  1. Which holds whole of the water that enters into it

  2. Which allows percolating the water slowly from it

  3. Which allows water to pass very quickly from it

  4. Which allows limited amount of water to retain into it
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water should percolate slowly in a soil because if water passes too rapidly, then many of the minerals and organic matter useful for plants will simply be washed away. If there is no percolation and all the water is simply held up in the soil, then there will be poor aeration and respiration in plant roots will suffer.

Multiple choice evs mud and stones soil types types of soil soil - types, uses and need for conservation

Soil formed by transportation of disintegrated parent material from one place to another is called as

  1. Light soil

  2. Alluvial soil

  3. Heavy soil

  4. Sedimentary soil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sediment refers to solid fragments of inorganic or organic material, that comes from the weathering of rock and are carried and deposited by wind, water, or ice. Sedimentary soil is the transported soil, which is formed in this manner. Alluvial soil is the already formed soil, carried and deposited by flowing water as rivers etc.