Chemistry, asked by akashdip12369, 1 year ago

please help me please help please fast

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Answered by naveen7178
1
1. coal is a natural substance tat have substantial energy
where as petroleum do have but its not directly fr nature we do thermal process to extract it fr the natural sources
2 lpg is used in households and its litlle bit polluting
cng is used in creams,vehicles and its less polluting
3. combustible : these are the substances tat can be burned under normal condition like burning wood etc
non - combustible : these are the substance
which is not easy to burn them like metal compound have high melting pts

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