Consider the following statements regarding biogas production and its composition:
Statement 1: Biogas is primarily composed of Methane (CH₄) and Carbon Dioxide (CO₂).
Statement 2: The methane content in biogas typically ranges between 55-65%, while carbon dioxide varies between 30-45%.
Statement 3: Biogas is produced through aerobic fermentation of organic materials like cow dung, poultry slurry, and crop residue.
Statement 4: Hydrogen sulfide (H₂S) and water vapors are present in trace amounts in biogas.
Which of the following is correct?
1
Only Statements 1, 2, and 4 are correct
2
Only Statements 1 and 3 are correct
3
Only Statements 2 and 4 are correct
4
All the statements are correct