Class 4 Social Studies Chapter 10 Question Answers cover book exercise questions in a simplified and precise way. Class 4 Social Studies Chapter 10 Question Answers are easy to understand and learn for exams.
#Soils of India
Class 4 Social Studies Chapter 10 Question Answers
A. Fill in the blanks.
1. Soil is an important natural resource.
2. The alluvial soil of the Northern Plains is very fertile.
3. Cotton grows best in black soil.
4. Desert soil contains mainly sand and is not fertile.
B. Write T for true and F for false sentences.
1. Soil is made by breaking up of rocks. True
2. Black soil is more fertile than red soil. True
3. Mountain soil is very fertile. True
4. Soil erosion can be controlled by planting trees. True
C. Match the columns.
| 1. Desert soil | c. Rajasthan |
| 2. Laterite soil | d. Coffee |
| 3. Black soil | b. Cotton |
| 4. Red soil | e. Jowar, bajra |
| 5. Alluvial soil | a. Rice |
D. Answer the following questions.
1. Why is soil considered to be an important natural resource?
Answer: All living beings depend on soil for their food. Most of the people in India depend on agriculture for their livelihoods. It is considered to be an important natural resource.
2. How is soil made?
Answer: Soil is made by the breaking up of rocks through various processes.
3. Why is alluvial soil found in plains around rivers?
Answer: A large amount of silt (alluvium) is brought by rivers and deposited on the land around the rivers.
4. How is the presence of humus affect the soil?
Answer: The minerals present in humus make the soil very fertile.
5. What makes desert soil infertile?
Answer: The sandy soil of deserts can’t hold much water and it makes the desert soil infertile.
6. How is black soil formed? In which parts of India do we find it?
Answer: Black soil is formed from the lava that comes out of volcanoes.
7. What is soil erosion? How does it harm us? How can it be prevented?
Answer: The carrying away of soil by wind or water to a different place is called soil erosion.
Erosion makes soil infertile.
Soil erosion can be prevented by planting trees as their roots hold the soil together.
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