NEET Solved Paper 2014 Question 85
Question: What gases are produced in anaerobic sludge digesters? [AIPMT 2014]
Options:
A) Methane and $ CO _2 $ only
B) Methane, hydrogen sulphide and $ CO _2 $
C) Methane, hydrogen sulphide and $ O _2 $
D) Hydrogen sulphide and $ CO _2 $
Show Answer
Answer:
Correct Answer: A
Solution:
- Anaerobic digestion is a bacterial process that break down organic material within the waste in the absence of oxygen. Municipal sewage treatment facilities also use sludge digesters. In anaerobic sludge digesters, bacteria produce a vital mixture of gases like methane, hydrogen, sulphide and carbon dioxide. Generally, equation for anaerobic sludge digestion is Organic matter + combined oxygen $\rightarrow$ Anaerobic microbes + New cell + Energy + $ dCH _4+CO _2+ $ Other gases
