Green Energy for a Sustainable Future
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1

The above-ear part of the corn-stover is the most appropriate biomass for ……………… production.

Bioethanol
Pellets
Food products
Hydrogen
2

The third phase of anaerobic digestion is called ___________.

Methanogenesis
Acetogenesis
Lactogenesis
Purification
3

The second phase of anaerobic digestion is called ___________.

Acidogenesis
Acetogenesis
Methanogenesis
None of the above
4

What is the function of a secondary digester in a biogas plant?

Storage of digestate treated in primary digester
Purification of biogas obtained
Both a and b
None of the above
5

Combined heat and power unit is used to convert biogas to ________.

Thermal Energy
Electrical Energy
Both a and b
None of the above
6

Biomethane contains about _________ of methane.

80 %
86 %
90 %
99 %
7

Globally approximately _________ number of households use biogas as the significant energy source for lighting and cooking.

2 million
8 million
12 million
16 million
8

The first-ever large-scale biogas plant was built in _______ in the year 1911.

Bristol, England
Boston, US
Birmingham, England
Pittsburgh, USA
9

The first-ever anaerobic digestion system was built in ________ in the year 1859.

Delhi, India
Dehradun, India
Agra, India
Bombay, India
10

The last phase of anaerobic digestion process converts carbon dioxide into methane by _______.

Methanogenic bacteria
Lactogenic bacteria
Acetogenic bacteria
Acidogenic bacteria