Magnetic Field

 Magnetic field may be defined as the space around a magnet in which the affect of magnet can be experienced. The magnetic field of a magnet is represented by equidistant parallel lines called magnetic lines of force. The magnetic line of force may be defined as the...

Combustion of Fuels

 Combustion of Fuels We know that fuels produce energy only when they are burnt in the presence of oxygen. This process of burning of fuels in the presence of oxygen to produce energy is called combustion. The combustion of fuels can take place if following two...

Calorific Value of Fuels

When fuels are burnt, heat is produced. The amount of heat produced by different types of fuels on burning is expressed in terms of calorific value. Calorific value of a fuel may be defined as the amount of heat produced on complete burning of 1 gm of fuel. S.I. unit...

Natural Gas

 Natural gas is a very good fuel which is formed by slow anaerobic decomposition of organic matter like plant and animal wastes inside the earth. Usually, natural gas is found over petroleum in oil wells; however there are also some oil wells which give only natural...

Petroleum

Petroleum is a dark coloured viscous fossil fuel which was formed millions of years ago by anaerobic digestion of remains of sea animals that got buried in the earth. It is also called crude oil. Petroleum is present in the earth trapped between non-porous rocks in...