Soil- our life - class-XI
Which one of the following methods is most appropriate to check soil erosion on steep slopes?
Which one of the following is the main cause of land degradation in Punjab?
Which of the following is responsible for soil erosion in farms?
The main reason for land degradation in Uttar Pradesh is __________.
The principal cause of soil damage in Punjab and Haryana is _______.
Which one of the following is responsible for the soil erosion in farms?
Arid soil is formed in western Rajasthan. Its main features are:
I. Arid soils range from red to yellow in colour.
II. They are generally sandy and saline.
III. Humus and moisture content is very low due to dry climate and faster evaporation.
IV. Thorny bushes are found in this region.
Which of the following is/are methods of checking soil erosion?
$1$. Strip cropping
$2$. Contour ploughing
$3$. Use of irrigation and fertilisers
$4$. Terrace farming.
Which of the following indicates the types of soil erosion in decreasing order of damage caused in India?
The cutting of forests leads to
The crop which grows in alluvial soil and needs 150 cm rainfall is
Heavy rainfall affects soil by
Consider the following statements:
1) Contour ploughing prevents soil erosion and the formation of gullies.
2) Gully erosion is the removal of top soil and creation of many steep-sided cuttings in hillside.
Which of the statements given above is/are correct?
As organic matter decomposes, it releases nutrients and organic acids. These acids known as _______ attack clays and rock, releasing iron and aluminium.
The CSCS, approved and adopted in 1960, is known as the _______ approximation.
Identify the wrong statement.
'Frost Hollows' is/are related to _______.
Which of the following measures are effective for soil conservation in India?
1. Avoiding crop rotation
2. Afforestation
3. Encouraging the use of chemical fertilizers
4. Limiting shifting cultivation
Select the correct answer from the codes given below.
Which one of the following factors is responsible for excessive soil erosion in Chhotanagpur plateau?
Which one of the following is the main reason for the loss of the top soil in India?
Soil erosion in India occurs in almost all the littoral states but it is most serious along the coast of ____________.
In India, the problem of soil erosion is associated with which of the following?
1. Terrace cultivation
2. Deforestation
3. Tropical climate
Select the correct answer using the codes given below.
Soil erosion can be prevented by _________.
Which among the following within processes helps in evolution?
1. Natural selection
2. Adaptation
3. Mutation
4. Reproductive isolation
Consider the following statements and choose the correct answer from the codes given below.
1. Soil erosion is the destruction of the upper layer of the soil by natural factors.
2. General erosion is one when there is 25% less erosion of the land soil.
3. Sheet erosion is caused when the upper fertile layer of the land is eroded by air or water.
Government of India encourages the cultivation of sea buckthorn. What is the importance of this plant?
1. It helps in controlling soil erosion and in preventing desertification.
2. It is rich source of biodiesel.
3. It has nutritional value and is well adapted to live in cold areas of high altitude.
4. Its timber is of great commercial value.
Which of the statements given above is/are correct?
Which is the main causative factor of desertification
Sheet erosion is caused by
Loss of upper fertile layer of soil is known as
Soil erosion is greater when
Sheet erosion is caused by
Removal of top fertile soil by wind or water is called
Eroded soils are
Soil erosion is greater when
Eroded soils are
Soil erosion can be prevented by
Siltation in rivers, harbors and reservoirs is caused by
Soil, sand and other solids are washed into water bodies due to
Loss of top soil is called
Soil erosion is greater when
Which of the following is not the function of forest?
Soil erosion can be prevented by
Soil erosion is caused due to
Which of the following prevents soil erosion?
The removal of land surface by water, wind or ice is known as
More soil erosion occurs where there is
Which of the following phenomena take place when the top layer of soil is exposed?
Removal of top fertile layer of soil by wind or water is called as
Deforestation causes
Soil erosion is due to
The effect of rainfall over the soil which is covered by vegetation and the effect over the soil left bare after harvesting, respectively, would be
Main cause of soil erosion
What happen when rain falls on soil without vegetational cover?
To prevent soil erosion, farmer plants a hedge across a field. This method works because
Removal of topsoil by wind and water is called as
Soil erosion can be prevented by
The removal of topsoil by water and wind is called as
Which of the following should be increased to prevent soil erosion?
Loss of top soil is called as
Which of the following bind the soil together?
How does seeding of areas help in reducing soil erosion?
What prevents soil erosion?
Soil erosion can be reduced by
Soil erosion can be checked by
Uniform soil erosion by running water is
Removal of soil by the action of wind and water is known as
Soil erosion is more where
Soil transported by air is
Sheet erosion is due to
In the hills, the soil erosion takes place due to rapid flow of rain water. It can be most effectively controlled by.
In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to
Which one of the following erosion processes is a natural process?
Farm land tends to erode most rapidly when planted with
The best way to check soil erosion is by providing adequate trees and
Material produced by weathering accumulates in
Removal of the soil by the action of wind and water is known as
To prevent soil erosion, a farmer plants a hedge across a field. This method works because
Soil erosion by wind brings about the serious damage in soil by changing the__________
Arrange the following in the descending order of their role in soil erosion
(I) Wind erosion
(ii) Chemical degradation
(iii) Physical degradation
(iv) Water erosion
Arrange the following in descending order of their role in soil erosion.
(i) Wind erosion
Soil carried by gravity is
Which soil is red in colour?
In which of the following soil the ratio of large particles are high?
Which of the following characteristic property of clay soil make it useful to grow plants?