COMBUSTION AND FLAME

CNG (Compressed Natural Gas)

Oxides of sulphur and nitrogen dissolve in rain water and form acids. Such rain is called acid rain. It is very harmful for crops, buildings and soil.

Global warming is the rise in temperature of the atmosphere of the earth. This results, among other things, in the melting of polar glaciers, which leads to a rise in the sea level, causing floods in the coastal areas. Low lying coastal areas may even be permanently submerged under water.

Combustion of most fuels releases carbon dioxide in the environment. Increased concentration of carbon dioxide in the air is believed to cause global warming.

The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its calorific value. The calorificvalue of a fuel is expressed in a unit called kilojoule per kg (kJ/kg).

s. A good fuel is one which is readily available. It is cheap. It burns easily in air at a moderate rate. It produces a large amount of heat. It does not leave behind any undersirable substances.There is probably no fuel that could be considered as an ideal fuel. We should look for a fuel …

What is good fuels or ideal fuel ? Read More »

the sources of heat energy for domestic and industrial purposes are mainly wood, charcoal, petrol, kerosene etc. These substances are called fuels.

. Alarge amount of gas formed in the reaction is liberated. Such a reaction is called explosion.

The type of combustion in which a material suddenly bursts into flames, without the application of any parent cause is called spontaneous combustion.

We find that the gas burns rapidly and produces heat and light. Such combustion is known as rapid combustion.There are substances like phosphorus which burn in air at room temperature.