he making of the device
age. For example, the use of a wind generate
Sfor obtaining energy is pollution-free but the p
the materials for these energy devices mu
enment in some way. From this we conclude
energy can be said to be pollution-free. So,
it actually means that it is a cleaner fuel th
ple, when we say that CNG is a clean fuel,
r fuel than, say petrol or diesel. Similarly, w
aner fuel than CNG. This will become more
Hydrogen has been used as a rocket fuel. W
El than CNG ? Why or why not?
(NCERT R
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