What do you understand by the term Dark Fermentation?

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Q: 168 (SSC/NA)
What do you understand by the term ‘Dark Fermentation’?

question_subject: 

Science

question_exam: 

SSC

stats: 

0,26,69,18,40,11,26

keywords: 

{'dark fermentation': [1, 0, 0, 0], 'organic wastes': [1, 0, 0, 0], 'methane': [0, 0, 0, 5], 'nuclear wastes': [1, 0, 0, 0], 'method': [9, 0, 1, 8], 'waste water': [1, 0, 0, 0], 'fuel': [1, 0, 5, 14], 'hydrogen': [0, 0, 1, 3], 'term': [28, 1, 9, 27]}

Option 1: This option is incorrect as dark fermentation is not associated with the disposal of nuclear wastes. Dark fermentation is a biological process, whereas nuclear waste disposal involves different methods.

Option 2: This option is the correct answer. Dark fermentation is a method used to produce methane from organic wastes. It is a microbial process where bacteria break down organic matter in the absence of light and oxygen, producing methane gas. This process is commonly used in biogas production and waste management.

Option 3: This option is incorrect as dark fermentation does not specifically target reducing COD (Chemical Oxygen Demand) in the atmosphere. The main goal of dark fermentation is to produce biogas.

Option 4: This option is the correct answer. Dark fermentation can also be used to produce hydrogen gas as a fuel from wastewater. This is achieved by the breakdown of organic matter by bacteria, which generates hydrogen gas as a byproduct.

Overall, dark fermentation is primarily used for the production of methane and hydrogen gas from organic wastes, making options 2 and 4 the correct choices.