Which of the following releases less amount of carbon dioxide per unit

1.	Which of the following releases less amount of carbon dioxide per unit of energy?
A.	Coal
B.	Oil
C.	LPG
D.	Petrol
Answer» C. LPG

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The coal sample contains=80%;H=4%;O=2%;N=12%;S=2%, the remainder is ash and then calculate the volume of air required for perfect combustion of 1kg of fuel assuming STP conditions.
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Which of the following releases less amount of carbon dioxide per unit of energy?

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