Civil Engineering - Waste Water Engineering - Discussion

23. 

In sewers the gas generally found, is

[A]. Hydrogen sulphide (H2S)
[B]. Carbon dioxide (CO2)
[C]. Methane (CH4)
[D]. Petrol vapours
[E]. All the above.

Answer: Option E

Explanation:

No answer description available for this question.

Somu said: (Jan 2, 2018)  
I think the answer should be C.

Muazzam said: (Oct 4, 2018)  
How Co2? Explain.

Dipu said: (May 24, 2019)  
How Petrol vapour? Please explain.

Aravind said: (Aug 17, 2019)  
Sewers used for both domestic and industrial waste. Hence improper disposal of petroleum products can lead to petrol vapour.

Nilesh said: (Jul 20, 2020)  
Option C because its mostely contain 70% methane.

Dimple said: (Oct 7, 2021)  
Most appropriate answer is C.

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