Answers

2014-08-04T20:46:37+05:30
May be because it has more (heat) efficency and can be compressed to carry a large amount for uses.
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2014-08-04T21:16:27+05:30
LPG is considered as a better fuel than coal as it is more eco-friendly than coal. Burning of coal releases many toxic gases which affects our health. But on the other hand LPG does not have any such nuisance. 
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