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Extraction of Copper

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explain the process of diffusion of iron in crystalline and metamorphic rocks?

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Solution

It is the process When iron is present in metamorphic rocks in the form of small crystals. This makes the colour of soil red.This reddish colour due to diffusion of iron in crystalline and metamorphic rocks makes it one of the important property of these soils.

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Q. Which of the following is/are not the characteristics of red soils?

1

. They are derived from weathering of old crystalline and metamorphic rocks.

2

. They contain iron oxides.

3

. They have high water retention capacity.

4

. They have high nitrogen content.

Q. Q. Consider the following statements about the types of soils found in India:Which of the above given statements is/are correct?

1 only
1 and 3 only
3 only
1, 2 and 3

Q.  With respect to the Red and yellow soil , consider the following statements:

1. Red soil develops on crystalline igneous rocks in areas of low rainfall in the eastern and southern part of the Deccan Plateau and also along the piedmont zone of western ghat.
2. The soil develops a reddish colour due to a wide diffusion of iron in crystalline and metamorphic rocks. It looks yellow when it occurs in a hydrated form.
3. The fine-grained red and yellow soils are normally fertile, whereas coarse-grained soils found in dry upland areas are poor in fertility.
4. They are generally poor in nitrogen, phosphorus and humus.

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Q. Which of the following processes happens in non-crystalline rocks?

Which of the following are true with regard to metamorphic rocks?

1. They are formed inside the earth, under great pressure.

2. Some examples of metamorphic rocks are gneiss, slate, Breccia, rock salt, and quartzite.

3. The coastline of Brazil is made up of metamorphic rocks.

4. The layering within metamorphic rocks is called foliation

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