Class 7 Science Chemistry Chapter 9 Test Paper Set-1 Pdf Download
Test Paper Of Class 7 Science Chemistry Chapter 9 Soil
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CLASS: 7 MAX.MARKS :30
SUBJECT: SCIENCE (Chemistry) TIME: 1:30 HOUR
CH: 9 (Soil)
General Instructions:
I. All questions are compulsory.
II. This question paper contains 18 questions divided into three Sections:- A, B, and C.
III. Section A has 10 questions of 1 mark each. Section B has 4 questions of 2 mark each and Section C has 4 questions of 3 mark each.
(Section – A)
In Questions 1 to 10, there are four options, out of which one is correct. Write the correct answer.
1. In addition to the rock particles, the soil contains
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(i) air and water
(ii) water and plants
(iii) minerals, organic matter, air and water
(iv) water, air and plants
2. The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.
(a) Desert (b) Forest
(c) Open field (d) Cricket ground
3. Which of the following is/are the main agents of soil erosion?
(A) Wind and water (B) Rocks (C) Sand
(a). A (b). A & B
(c). B & C (d). A, B, C
4. Soil conservation measures are mainly aimed at protecting which of the following?
(a) Plants (b) Top soil
(c) Sub soil (d) Soil organisms
5. The type of soil suitable for growing masoor dal is:
(a). Sandy soil (b). Loamy soil
(c). Clay soil (d). Bricks
6. Rate of decomposition depends upon.
(a). Chemical composition of detritus
(b). Temperature
(c). Soil moisture and soil PH
(d). All of these
7. The study of the vertical section of the layers of the soil is known as
(a). Soil study
(b). Soil profile
(c). Soil layering
(d). Soil weathering
8. Which of the following layer of the soil contains more humus?
(a). Top soil
(b). Subsoil
(c). Bedrock
(d). None of the above
9. Which one of the following is the main cause of land degradation in Punjab?
(a). Intensive cultivation
(b). Deforestation
(c). Over irrigation
(d). Overgrazing
10. Soil profile means ______.
(a). Composition of the soil
(b). Texture of the soil
(c). Layers of the soil
(d). None of the above
(Section – B)
11. Which of the following situations – ‘A’ or ‘B’ – is advantageous for absorption of water and minerals? Why? Situation ‘A’ : Growth and branching of roots in the C-horizon. Situation ‘B’ : Growth and branching of roots in A and B horizons.
12. Locate the following zones given as boxed items in Figure, which shows a diagram of soil profile:-Top soil, Subsoil, C-horizon, Bedrock
13. Explain how soil is formed.
14. List the differences between clayey soil and sandy soil.
(Section – C)
15. Continuously water-logged soils are disadvantageous for plant growth. Why?
16. Gardeners gently dig up the soil around the roots of garden herbs (plants) frequently. Give reasons.
17. Razia conducted an experiment in the field related to the rate of percolation. She observed that it took 40 min for 200 mL of water to percolate through the soil sample. Calculate the rate of percolation.
18. What is soil? How it is affected?
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