Consider the following statements regarding biogas which is a very important source of energy in rural areas.
1. Biogas has a higher thermal efficiency compared to charcoal, cow dung, kerosene.
2. Not only biogas serves as a source of energy in the form of fuel but also can be used as source of manure for farm crops.
3. It is slightly less environment friendly as it releases green house gases when burnt as a fuel.
Choose the incorrect code from the following
1, 2 only.
2, 3 only.
3 only.
None of the above.
Explanation:
Biogas is a type of gas that is formed by the biological breakdown of organic matter in anoxygen deficient environment. It is counted as an eco friendly bio fuel. Biogas contains 60%methane and carbon dioxide. It can be employed for generating electricity and also asautomotive fuel. For example; each household builds its own plant to channel waste fromthe domestic toilet and nearby shelters for animals, usually pigs, cows into a sealed tank.The waste ferments and is naturally converted into gas and compost, resulting in improvedsanitary conditions at home.A large amount of straw, which was previously burned, is now put into biogas tanks toferment. This reduces air pollution from smoke and helps produce high-quality organicfertilizer.Biogas plants significantly lower the greenhouse effects on the earths atmosphere. Theplants lower methane emissions by entrapping the harmful gas and using it as fuel. Thus it isan environment friendly fuel.
Biogas is a type of gas that is formed by the biological breakdown of organic matter in anoxygen deficient environment. It is counted as an eco friendly bio fuel. Biogas contains 60%methane and carbon dioxide. It can be employed for generating electricity and also asautomotive fuel. For example; each household builds its own plant to channel waste fromthe domestic toilet and nearby shelters for animals, usually pigs, cows into a sealed tank.The waste ferments and is naturally converted into gas and compost, resulting in improvedsanitary conditions at home.A large amount of straw, which was previously burned, is now put into biogas tanks toferment. This reduces air pollution from smoke and helps produce high-quality organicfertilizer.Biogas plants significantly lower the greenhouse effects on the earths atmosphere. Theplants lower methane emissions by entrapping the harmful gas and using it as fuel. Thus it isan environment friendly fuel.