the calolrific values of petrol and cng are 45000kj/kg and 50000kj/kg respectively . if you have a vehical which can run on petrol as well as cng, which fuel will you prefer and why?
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We prefer cng becouse it have high colorific value and it is man made gas. And ecofriendly gas but petrol is irreversible and it can't get easily and it is available in limit amount
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CNG because it's don't pollute the environment and it have high calorific value and produces much heat as compared to petrol
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