Which one of the following has the highest calorific value?

Options

A. kerosene
B. biogas
C. LPG
D. petrol

Explanation

To determine which fuel has the highest calorific value, we can follow these steps:

### Step 1: Understand Calorific Value
Calorific value is the amount of heat energy produced when a fuel is burned. It is usually measured in kilojoules per kilogram (kJ/kg).

### Step 2: Identify the Fuels and Their Calorific Values
We need to compare the calorific values of the following fuels:
- Kerosene: 45,000 kJ/kg
- Biogas: 40,000 kJ/kg
- LPG (Liquefied Petroleum Gas): 55,000 kJ/kg
- Petrol: 45,000 kJ/kg

### Step 3: Compare the Values
Now, we will compare the calorific values:
- Kerosene: 45,000 kJ/kg
- Biogas: 40,000 kJ/kg
- LPG: 55,000 kJ/kg
- Petrol: 45,000 kJ/kg

### Step 4: Determine the Highest Calorific Value
From the comparison, we can see that LPG has the highest calorific value at 55,000 kJ/kg.

### Conclusion
Therefore, the fuel with the highest calorific value is **LPG**.

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