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CLASS X
Physics >> Source of energy
4.
Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?
Ans.
Hydrogen is a cleaner fuel than CNG. This is due to the reason that it produces water on burning whereas CNG on burning produces CO2, though much less than that produced when coal or oil is burnt. A spaceship carries oxygen (in liquid form) along with it to burn hydrogen (in liquid form) as a fuel.
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