Name: Pollution Caused by Burning of Fossil Fuels
Uploaded: 2019-07-19
Duration: 8 min 25 s
Description: We'll learn about fossil fuels that include coal, natural gas, and petroleum, which are the most used conventional energy sources. Also, learn the effects of...

Question

Namita noticed that the LPG gas stove in her kitchen was giving out yellow flame and blackening the utensils. She cleaned the stove burners. The flame then became blue and stopped blackening the utensils. She explained to her parents that the stove was not burning efficiently and wasting fuel because it was dirty. What values did Namita show?

Accepted Answer

If the fuel and air mixture is correct, the gas stove gives a blue flame. When the air supply (oxygen) is insufficient, fuel does not burn completely thus giving a yellow flame. Yellow flame shows the release of carbon monoxide which is a poisonous gas and also releases a lot of unburnt carbon particles which make utensils black when placed on such LPG gas stove. In such a case, the gas burner requires cleaning and air shutter adjustment to provide sufficient air so that the fuel and air mixture becomes correct, and the gas stove could give a blue flame. So, after cleaning of stove burner, a sufficient amount of oxygen is available which doesn't lead to the production of carbon monoxide and releases less unburnt carbon, due to which the blackening of utensils stops. Hence, Namita shows the value of being well aware of environmental problems and health risks caused due to the production of carbon monoxide.

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