Question

In air experiment, 800 g of a fuel was completely burnt. The heat produced was measured to be 1200 kJ. The calorific value of the fuel in kJ/kg will be​

Answer 1

The calorific value of the fuel is 1500 kJ/kg.

Given:

800 g of fuel was completely burnt, and the heat produced was 1200kJ.

To find:

The calorific value of the fuel in kJ/kg.

Solution:

The calorific value of a fuel is defined as the amount of heat energy produced when one unit mass (usually one kilogram) of the fuel is burned completely.

To find the calorific value of the fuel, we use the formula:

Calorific value = Heat produced / Mass of fuel burned

Here, the mass of the fuel burned is 800 g or 0.8 kg, and the heat produced is 1200 kJ.

We get,

Calorific value = 1200 kJ / 0.8 kg

Calorific value = 1500 kJ/kg

Therefore, the calorific value of the fuel is 1500 kJ/kg.

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