Gaseous fuels due to their advantages over ther tupes of fuels are becoming highly popular . The advantages fo the fgaseous fuels are as follows :
a. High calorigic value .
b. Do not produce smoke and do not leave ash after combstion .
c. They can flow through pipes and can be ignige at a moment's notic eat any place . No sp-ecial devices are required for their combustion .
i. Coal gas is a good gaseous fuel as it conitains `95^5` combustible gaseous such as `H_2, CH_4, CO` etc , It is obtained buy destructive distillation of coal at ` 100^@ C` .
ii. Water gas is a mixture of ` CO` and `H_2` and is prepared by passing steam over incandescnt coke . The reaction is owever endothermic .
iii. Producer gas , which possesses low calorific value, so prepared by passing aair over red hot coke . It contains mainly nitrogen and ` CO`
iv. Semi-water gas is a mixture of water fas and producer fas .
v. oil gas , which is used in laboratries , is obtained by cracking of kerosene . It is a mixture of hydrocarbon (saturated and unsatureated ) mainly lower hudrocarons .
iv. `LPG`, which contains ` C_3` and ` C_4` hydrocarbon of the alkane and alkene serties , suppied in cylinders for domestic uses is very populsr these days .
`LPG` stands for :

Options

A. Liquefied pertoleum gas
B. LiQuefied producer gas
C. Laboratory petroleum gas
D. Laboratory producer gas

Answer

To answer the question regarding the full form of LPG, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Gaseous Fuels**:
- Gaseous fuels are becoming increasingly popular due to their numerous advantages over solid and liquid fuels. They have a high calorific value, do not produce smoke, and do not leave ash after combustion.

**Hint**: Recall the benefits of gaseous fuels compared to solid and liquid fuels.

2. **Identifying Types of Gaseous Fuels**:
- The question mentions several types of gaseous fuels, including coal gas, water gas, producer gas, semi-water gas, oil gas, and LPG. Each has distinct characteristics and uses.

**Hint**: Familiarize yourself with the different types of gaseous fuels and their compositions.

3. **Focusing on LPG**:
- LPG is highlighted as a popular gaseous fuel supplied in cylinders for domestic use. It consists mainly of hydrocarbons, specifically C3 and C4 alkanes and alkenes.

**Hint**: Think about the composition of LPG and its common applications.

4. **Determining the Full Form of LPG**:
- The question provides multiple-choice options for what LPG stands for:
- a) Liquefied petroleum gas
- b) Liquefied producer gas
- c) Laboratory petroleum gas
- Based on the information provided, LPG stands for "Liquefied Petroleum Gas".

**Hint**: Eliminate the other options by considering their relevance and correctness in the context of gaseous fuels.

5. **Conclusion**:
- The correct answer to the question is that LPG stands for "Liquefied Petroleum Gas".

### Final Answer:
LPG stands for **Liquefied Petroleum Gas**.