Question:
Given below are two statements
Statement I: Fermentation of cattle dung produces biogas which can be used for cooking, and the slurry produced can be used as organic manure.
Statement II: Ethane is the primary constituents of biogas.
In light of the above statements, choose the most appropriate answer from the options given below
Given below are two statements
Statement I: Fermentation of cattle dung produces biogas which can be used for cooking, and the slurry produced can be used as organic manure.
Statement II: Ethane is the primary constituents of biogas.
In light of the above statements, choose the most appropriate answer from the options given below
Statement I: Fermentation of cattle dung produces biogas which can be used for cooking, and the slurry produced can be used as organic manure.
Statement II: Ethane is the primary constituents of biogas.
In light of the above statements, choose the most appropriate answer from the options given below
Show Hint
Natural gas and Biogas both have Methane as their chief component.
Remember: Methane is the smallest hydrocarbon ($CH_4$).
Remember: Methane is the smallest hydrocarbon ($CH_4$).
Updated On: Aug 24, 2026
- Both Statement I and Statement II are correct
- Both Statement I and Statement II are incorrect
- Statement I is correct but Statement II is incorrect
- Statement I is incorrect but Statement II is correct
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests the understanding of anaerobic digestion of organic waste (biogas production) and the chemical composition of the resulting gas.
Detailed Explanation:
• Analysis of Statement I: Anaerobic fermentation of cattle dung in a biogas plant (Gobar gas plant) yields a combustible gas that is an excellent renewable fuel for cooking and lighting. The leftover digested residue, called slurry, is rich in nitrogen and minerals, making it a high-quality organic manure. This statement is correct.
• Analysis of Statement II: Biogas is a mixture of gases. The primary constituent ($50-75\%$) is Methane ($CH_4$), not ethane. It also contains significant amounts of carbon dioxide ($25-50\%$) and traces of hydrogen sulphide and moisture. Therefore, Statement II is incorrect.
Final Answer:
Statement I is factually true, but Statement II is chemically false. The correct choice is option (C).
This question tests the understanding of anaerobic digestion of organic waste (biogas production) and the chemical composition of the resulting gas.
Detailed Explanation:
• Analysis of Statement I: Anaerobic fermentation of cattle dung in a biogas plant (Gobar gas plant) yields a combustible gas that is an excellent renewable fuel for cooking and lighting. The leftover digested residue, called slurry, is rich in nitrogen and minerals, making it a high-quality organic manure. This statement is correct.
• Analysis of Statement II: Biogas is a mixture of gases. The primary constituent ($50-75\%$) is Methane ($CH_4$), not ethane. It also contains significant amounts of carbon dioxide ($25-50\%$) and traces of hydrogen sulphide and moisture. Therefore, Statement II is incorrect.
Final Answer:
Statement I is factually true, but Statement II is chemically false. The correct choice is option (C).
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