STD 12 - 8. microbes in human welfare — BIOLOGY STD 12 Science — Question
Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 8. microbes in human welfare1 Mark
MCQ
Gobar gas contains mainly
✓
$CH _{4} \wedge CO _{2}$
B
$CH _{4} \wedge O _{2}$
C
$CH _{4} \wedge H _{2}$
D
$CH _{4} \wedge SO _{2}$
✓
Answer
Correct option: A.
$CH _{4} \wedge CO _{2}$
a Biogas is a methane rich fuel gas produced by anaerobic breakdown or digestion of biomass (mainly animal wastes) with the help of mathanogenic bacteria. It is composed of methane $(50-70\, \%),CO _{2}\, (30-40 \,\%)$ and traces of hydrogen, nitrogen and $H_{2} S$
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