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प्रश्न
Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
| Rock, Clay, Sand, Gravel, Silt |
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उत्तर
Clay < Silt < Sand < Gravel < Rock
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संबंधित प्रश्न
Match the items in Column I with those in Column II:
| Column I | Column II |
| A home for living organisms | Large particles |
| Upper layer of the soil | All kinds of soil |
| Sandy soil | Dark in colour |
| Middle layer of the soil | Small particles and packed tight |
| Clayey soil | Lesser amount of humus |
With reference to Red Soils in India, answer the following questions:
Mention two important crops are grown in this soil.
Give a geographical reason for the following:
Dry farming is preferred in areas with red soil.
What do you mean by ‘Soil’?
Name one important crop that thrives best in Regur and Red Soil, and a sea-port from where it is exported.
Why it is necessary of Soil conservation ?
Which Soil is found suitable to grow coffee in Karnataka?
Complete the following table with reference to the soil.
| Action | Effect | Result (w.r.t. fertility) |
| Construction of embankments | ||
| Wind speed decreased | ||
| Farmland is kept fallow for some period | ||
| Humus content increased. | ||
| Trenches are dug across a slope | ||
| Litter is burnt on the farm. | ||
| Proves favorable for micro-organisms | ||
| The salt content in the soil increases | ||
| Chemical fertilizers used excessively |
Which one of the following soil is the best for cotton cultivation?
What are black soils? Describe their formation and characteristics.
