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SAI International School
Subject - Chemistry

Class - VII
Topic - SOIL - A Natural Resource
Sub-topic - Properties of Soil, Soil Erosion, Soil Pollution, Soil

Conservation

PRACTICE WORKSHEET

Q. No. Questions Skill Marks
1. Which of the following statements does not refer to topsoil? A 1
(i) It has no nutrients.
(ii) Plants grow in this layer.
(iii) Most living organisms are present in this layer.
(iv) It is a very hard layer.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv)
2. Drainage of water in ____ soil is very slow. R 1
(a) Clayey
(b) Loamy
(c) Sandy
(d) Hilly
3. The percolation rate of the soil is ___________. A 1
(a) The rate at which water is absorbed by the soil.
(b) The rate at which water evaporates from the soil.
(c) The rate at which the soil loses water.
(d) The rate at which soil formation takes place.
4. DIRECTION: Each of these questions contains an Assertion A 1
followed by Reason. Read them carefully and answer
the question on the basis of following options. You have to
select the one that best describes the two statements.
a) If both Assertion and Reason are correct and Reason is
the correct explanation of Assertion.
b) If both Assertion and Reason are correct, but Reason is
not the correct explanation of Assertion.
c) If Assertion is correct but Reason is incorrect.
d) If Assertion is incorrect but Reason is correct.
e) If Assertion & Reason both are incorrect.
ASSERTION (A): Afforestation causes soil pollution.
REASON (R): Soil pollution destroys the quality of the soil.
5. DIRECTION: Each of these questions contains an Assertion A 1
followed by Reason. Read them carefully and answer
the question on the basis of following options. You have to
select the one that best describes the two statements.

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