.1. What are the advantages of using CNG and LPG as fuels?
✔ Q.2. Name the petroleum product used for surfacing of roads.
✔ Q.3. Describe how coal is formed from dead vegetation. What is this process called?
✔ Q.4. Fill in the banks.
(a) Fossil fuels are ________, ________and _________.
(b) Process of separation of different constituents from petroleum is called _________.
(c) Least polluting fuel for vehicles is __________.
✔ Q.5. Tick True/False against the following statements.
✔ Q.(a) Fossil fuels can be made in the laboratory. (T / F)
✔ Q.(b) CNG is more polluting fuel than petrol. (T / F)
✔ Q.(c) Coke is almost pure form of carbon. (T / F)
✔ Q.(d) Coal tar is a mixture of various substances. (T / F)
✔ Q.(e) Kerosene is not a fossil fuel. (T / F)
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01 Crop Production and Management
02 Microorganisms: Friend and Foe
03 Synthetic Fibres and plastics
04 Materials: Metals and Non Metals
05 Coal and Petroleum
06 Combustion and Flame
07 Conservation of Plants and Animals
08 Cell: Structure and Functions
09 Reproduction in Animals
10 Reaching the Age of Adolescence
11 Force and Pressure
12 Friction
13 Sound
14 Chemical Effects of Electric Current
15 Some Natural Phenomena
16 Light
17 Stars and Solar System
18 Pollution of Air and Water
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2. Bitumin, 4. c. Cng
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