The gas which is NOT produced in the process of gaseous biomass is ________.

The correct answer is option 1.

Biomass

• Biomass is renewable organic material that comes from living organisms, such as plants and animals.
• The most common biomass materials used for energy are plants, wood, and waste. 
• Biomass can be converted into useful products such as bio-fuels, bio-char, syngas, power, heat, and fertilizer by a process called biomass gasification.
• Burning biomass releases methane, hydrogen, carbon monoxide, carbon dioxide, nitrogen oxides, and other pollutants and particulates.
• If these pollutants are not captured and recycled, burning biomass can create smog and severe health problems.