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c. Hydrogen
d. Nitrogen
7. Heavy rains and flood lead to this. U 1

a. Soil conservation
b. Soil pollution
c. Soil erosion
d. Air pollution
8. Soil conservation is related with mainly conserving: U 1

a. Topsoil
b. Subsoil
c. Microbes in soil
d. Parent rock
9 This does not decay and it pollutes the soil. K 1

a. Plastic
b. Plants
c. Animal wastes
d. Fruits
10 DIRECTION: Each of these questions contains an U&A 1
Assertion 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): Excessive use of fertilisers pollute the soil.

Reason (R): Fertilisers can make the soil acidic or basic
which is not suitable for the growth of plants

Subjective:
Q. No. Questions Skill Marks

1. Write the 2 factors necessary for removal of topsoil. R 1

2. Name the soil consists of equal quantities of sand and silt. U 1

2