This document discusses different types of fuels used for combustion. It defines fuels as energy giving substances that produce heat on combustion. Fuels are classified based on their physical state and source. Examples of fuels discussed include liquefied petroleum gas (LPG), water gas, producer gas, biogas, and power alcohol. The document also covers rocket propellants and how they are classified as homogeneous or heterogeneous. It discusses the combustion of fuels and the minimum air required. The working principle of the Orsat apparatus for flue gas analysis is also mentioned.
3. Fuels:-
Energy giving substances that produce heat
on combustion
Materials used for burning
A source of chemical energy
A source of carbon
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31. 2.1. Fuels
Part- A
1. Define fuels, Gross calorific value, Net calorific
value, Calorie and cracking.
2. How are fuels classified?
3. What is LPG?
4. What is water gas and producer gas?
5. What is biogas?
6. What is power alcohol?
Part B
1. Explain the preparation, properties and uses of
water gas and producer gas?
2. Explaining the refining or fractional distillation of
petroleum?
32. Part A
1. What are rocket propellants?
2. What is homogeneous, heterogeneous
propellant?
Part B
1. How are rocket propellants classified?
Explain giving suitable examples
33. Part A
1. What is meant by combustion of a fuel?
2. How much quantity of air required for the
combustion of 1 kg of carbon?
3. What do you understand by excess air supply for
the combustion?
Part B
1. Derive the expression for calculating the
minimum quantity of air required for the
combustion of 1 kg of a fuel.
2. Explain the working principle of Orsat apparatus
for the flue gas analysis?
