Page 2 - HA1

c. Water
d. Baking soda
8. Factory wastes disposed directly to rivers can:
a. Cause water pollution
b. Affect aquatic life
c. Increase the acidity of water
d. All of the above.

Subjective

Q. Questions Skill Marks
No.
1. Name the soil which is best for the growth of the plants. R 1

2. Toothpastes contain _________ . U 1
a. Bases
b. Minerals
c. Acids
d. Water.

3. DIRECTION: Each of these questions contains an U 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): The wastes from factories can be directly
disposed of in rivers.
Reason(R): The wastes from factories do not contain any
harmful substances.

4. Touching the leaves of plants like ‘Stinging Nettles’ leaves a U&A 3
burning sensation on our skin.
a. What do you think is the reason for this?
b. What can you do to stop the burning sensation
immediately?
c. What type of chemical reaction takes place here?

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