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SAI International School

Subject - Chemistry
Class - VIII
Topic – Coal and Petroleum

Sub-Topic – Petroleum, Refining of Petroleum, Natural Gas

Q. No. Questions Skill Marks
1. Which of the following is not obtained as a fraction during the U 1
refining of petroleum?
a. Kerosene.
b. Natural gas.
c. Lubricating oil.
d. Bitumen.
2. Which is the major component of CNG U 1
a. Ethane.
b. Propane.
c. Methane.
d. Butane.
3. The burning of fossil fuels causes air ________ and also leads R 1
to global _________.
4. Choose the correct option from the following: U + A 1
(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 resources are present in unlimited quantity
in nature and are not likely to be exhausted by human activities
are called inexhaustible resources.
Reason (R): Forests, wildlife, minerals are examples of
inexhaustible resources.
5. Assertion (A): Petroleum is called black gold. U + A 1
Reason (R): Due to its great commercial importance,
petroleum is called black gold.
6. Name the petroleum product used as fuel for stoves, lamps R 1
and jet aircrafts.
7. Why we should use fossil fuels only when absolutely A 1
necessary?
8. a. What are petrochemicals? Write two uses. R + A 2+1=
b. Why CNG is called clean fuel? 3
9. Write down three harmful effects of using fossil fuels? R 3
10. a. While driving what are the tips we must follow to save A + R 4 + 1

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