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प्रश्न
Explain the following terms.
Colloids
उत्तर
Colloids: Colloids are extremely tiny particles which are so small that they can not be seen by optical microscope ‘ and remain suspended indefinitely in water. They have the property of being electrically charged and can attract and hold ions of calcium, magnesium and potassium, known as bases. These bases are required by plants for their growth. – Soil colloids are also useful in holding water in the soil. When present in large quantities, they make the soil sticky and tough so that it is difficult to cultivate.
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संबंधित प्रश्न
Give geographical reason:
Temperature changes result in physical weathering.
Give geographical reason:
Gases in the atmosphere affect weathering.
What is gradation? Describe the two processes involved in gradation.
What is known as oxidation?
What are exogenic forces?
What is weathering? Illustrate the process graphically.
What do you understand by the following term:|
Carbonation
Give a geographical reason:
Human is an agent of weathering.
Is weathering essential as a pre-requisite in the formation of soils? Why?
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
