Question

The presence of _____ is common between CNF,PNG,Marsh gas,Sewage gas,and Biogas as major constituent
(a)Oxyge (b)Methane (c)Ethyne (d)Nitrogen​

Answer 1

Answer:

The presence of methane is common between CNF,PNG,Marsh gas,Sewage gas,and Biogas as major constituent.

Answer 2

I this methane is the right answer