Consider the following statements about CNG & H-CNG
1- With natural gas mainly composed of methane, CNG emits less air pollutants — carbon dioxide, carbon monoxide, nitrogen oxides and particulate matter — than petrol or diesel.
2- H-CNG is a blend of hydrogen and CNG, the ideal hydrogen concentration being 48%.
3- Compared to conventional CNG, use of H-CNG can reduce emission of carbon monoxide up to 70%, besides enabling up to 5% savings in fuel.
Which of the following given above is/are correct