Like the millipedes, centipedes are highly segmented (15 to 177 segments), but with only one pair of walking legs per segment (millipedes have two legs per segment). The head of a centipede has a pair of antennae, jaw-like mandibles (called forcipules) and other mouthparts.
Although compressed natural gas (CNG) is a fossil fuel like diesel, gas and coal, it is far different in terms of its impact on the natural environment.
LPG is the abbreviation of liquefied petroleum gas. It is a mixture of propane and butane. The calorific value of domestic LPG is about 116 MJ/m3 and its flammable limits are approximately 1.8 ï½ 9.5%.The Wobbe Index of LPG is 84.LPG is colourless, odourless, non-toxic, flammable, explosive and heavier than air.he Wobbe Index of town gas is 24. It is colourless, odourless, flammable, explosive and toxic. As town gas is lighter than air (weights approximately 0.52 times the weight of air), it can dissipate in the air easily. For safety reasons, town gas has a special odour added to help detect leaks.