Bomb calorimeter
Catalytic cracker
Fractionating column
Thermometer
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The correct answer is **A. Bomb calorimeter**. The energy content of a fuel like petrol is determined by burning the fuel and measuring the heat produced, typically using a bomb calorimeter. This device captures the heat released in a known mass of water, allowing for the calculation of the energy content in joules per gram (J/g) based on the temperature change of the water.

The energy value of petrol can be determined by:
- Calorimeter (also known as bomb calorimeter)
A calorimeter is a device used to measure the heat of combustion of a fuel, such as petrol. It works by burning a small sample of the fuel in a controlled environment and measuring the heat released.
Other options, such as:
- Thermometer (measures temperature)
- Barometer (measures atmospheric pressure)
- Hydrometer (measures density of liquids)
are not directly related to measuring the energy value of petrol.

The answer is wrong even google said so...pls change it
the answer is bomb calorimeter






