Which of the following statements is INCORRECT referring to energy from bio mass?

Question

Question

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MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper

Bio mass has a high calorific value.
Bio mass is solar energy stored in organic matter.
Bio mass is a renewable energy source.
The use of bio mass for energy causes no net increase in carbon dioxide emissions to the atmosphere.

Answer 1

Biomass

Biomass is an environmentally-friendly, renewable energy source.
It is produced when organic matter, such as food or animal waste, is broken down by microorganisms in the absence of oxygen, in a process called anaerobic digestion.
In a biogas power plant, biomass is burned in a boiler to produce high-pressure steam. This steam flows over a series of turbine blades, causing them to rotate. The rotation of the turbine drives a generator, producing electricity.
Bio methane is the primary component of biogas, which is produced from the anaerobic digestion of animal waste, organic waste, and agricultural residues.
Biomass mainly consists of methane (CH4) (50-75%), carbon dioxide (CO2) (25-50%), and traces of other gases.
Some of the most popular biomass choices are crop residues, municipal and industrial sewage, agricultural material, livestock manures, seaweed, food-processing, and paper wastes.

Explanation

Biomass does not have a high calorific value compared to fossil fuels like coal or petroleum. While it provides energy, its calorific value is lower than conventional fossil fuels.
The other statements are scientifically valid, as biomass stores solar energy, is renewable, and carbon-neutral in the long term (although combustion releases CO₂, plants absorb CO₂ during their lifecycle).

Hence, option 1 is the correct answer.