Question

please answer me for this question ​

Answer 1

Explanation:

Hydrogen is a cleaner fuel than CNG because when hydrogen is burnt only water vapour is produced which is not harmful to environment.

However, CNG on being burnt produces carbon dioxide along with water vapour.

Additionally if CNG undergoes incomplete combustion, carbon monoxide is produced instead of carbon dioxide which is much more dangerous and harmful for us.

Besides this certain additives and impurities are also present in CNG which when burnt produce dangerous oxides of elements like sulphur, nitrogen etc.

Answer 2

Answer:

Hydrogen is a cleaner fuel than CNG. This is because its combustion produces water which is harmless.

H2 + O2 --> H2O

However, combustion of CNG produces carbon dioxide and

CH4 + O2--> CO2 + H2O

Here, CO2 is a green house gas and leads to global warming.

Hope this helps you