CBSE Science Class 7

Soil

Soil - Chapter Wise CBSE Solved Question and Answer Based On NCERT

Short Q&A:

Q1: Explain soil and factors affecting soil.
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Q2: Define the following: a. Soil profile
b. Horizon
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Q3: Soil is one of the most important natural resources. Explain
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Q4: Describe the different layers in soil profile.
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Q5: Explain humus and its importance.
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Q6: How soil is formed?
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Q7: Why is top soil known as the habitat of many living organisms?
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Q8: Why Upper most layers in a soil profile are considered as most productive?
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Q9: What is physical weathering?
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Q10: What is chemical weathering?
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Q11: What is the similarity between physical and chemical weathering.
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Q12: State the factors on which nature of soil depends?
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Q13: Classify soil on the basis of the proportion of particles of various sizes.
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Q14: Plants help the development of the soil. How?
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Q15: Soil particles size is an important factor to determine the property of soil. Explain.
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Q16: Define a. loamy soil b. sandy soil
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Q17: Why loamy soil is known as best for growing plants?
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Q18: What is percolation of water? How it is different for different types of soil?
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Q19: Explain silt
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Q20: Explain the factors that help us to determine the various types of vegetation and crops that might grow in any region.
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Q21: State the main agents of weathering.
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Q22: What are the causes of soil erosion?
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Q23: State some ways to prevent soil erosion.
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Q24: Explain red and yellow soil.
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Q25: Differentiate between alluvial soil and mountain soil.
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Q26: Differentiate between clayey soil and sandy soil.
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Q27: Differentiate between laterite soil and black soil.
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Q28: Sketch the cross section of soil and label the various layers.
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Q29: What is soil pollution and factors responsible for the same?
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Q30: List some measure to prevent soil pollution.
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Chapter 9 Soil