What is the correct sequence of various components of biogas in terms of their…
2022
What is the correct sequence of various components of biogas in terms of their abundance?
(A) Ammonia (NH3)
(B) Hydrogen Sulfide (H2S)
(C) Methane (CH4)
(D) Carbon dioxide (CO2)
Choose the correct answer from the options given below:
Answer: D. C > D > B > A — ConceptBiogas is a mixture produced when organic matter decomposes without oxygen. Its composition is compared by the usual volume share of each gas, not…
- A.
B > D > A > C
- B.
C > D > A > B
- C.
D > C > B > A
- D.
C > D > B > A
Attempted by 1 students.
Show answer & explanation
Correct answer: D
Concept
Biogas is a mixture produced when organic matter decomposes without oxygen. Its composition is compared by the usual volume share of each gas, not merely by whether a gas is present.
Methane and carbon dioxide are the two major components; hydrogen sulfide and ammonia occur only as minor trace gases.
Application
Methane has the largest typical share, about 50–75%.
Carbon dioxide is next, commonly about 25–50%.
Hydrogen sulfide is a trace component, generally present at a higher abundance than ammonia.
Ammonia is also a trace component and occupies the last position among the listed gases.
Cross-check
The first two positions must be methane and carbon dioxide because together they make up most of biogas; the two trace gases follow in the order hydrogen sulfide, then ammonia.
Therefore, the abundance decreases in the order methane, carbon dioxide, hydrogen sulfide, and ammonia.