Q.1
What are the two main products of anaerobic digestion?
  • a) Biogas and bio-fertilizer
  • b) Waste water
  • c) Producer gas
  • d) Syngas
Q.2
Which of the following organic compounds are present in biogas?
  • a) Butane gas and carbon dioxide
  • b) Methane gas and carbon dioxide
  • c) Nitrogen
  • d) Sodium
Q.3
Which of the following are considered as contaminant gases in biogas?
  • a) Chlorine
  • b) Fluorine
  • c) Nitrogen, hydrogen and carbon monoxide
  • d) Methane gas and carbon dioxide
Q.4
Which of the following products of anaerobic digestion consists of organic humus and nutrients?
  • a) Biogas
  • b) Chlorine
  • c) Top soil
  • d) Bio-fertilizer
Q.5
Which of the following are used to store manure?
  • a) Silos and cellars
  • b) Plastic bottles
  • c) Glass bottles
  • d) Tin cans
Q.6
What are the three methods of pre-treatment of influent for anaerobic digestion?
  • a) Galvanization, pyrolysis and pre-heating
  • b) Mechanical treatment, pre-heating and thermal treatment
  • c) Galvanization, pyrolysis and thermal treatment
  • d) Pyrolysis, thermal treatment and pre-heating
Q.7
Thermo-chemical processes have higher efficiencies than bio-chemical processes.
  • a) True
  • b) False
Q.8
Which of the following is best suited to decompose lignin?
  • a) Anerobic digestion
  • b) Fermentation
  • c) Thermo-chemical conversion techniques
  • d) Bio-chemical conversion techniques
Q.9
Which of the following are types of pyrolysis?
  • a) Flash and ablative
  • b) Intermediate and anaerobic digestion
  • c) Anaerobic digestion and fermentation
  • d) Fermentation and intermediate
Q.10
Bio-oil has double the heating value of conventional fuel oil.
  • a) True
  • b) False
Q.11
What are the three types of hydrothermal processing of biomass?
  • a) Hydrothermal liquefaction, hydrothermal gasification and ablate pyrolysis
  • b) Hydrothermal liquefaction, hydrothermal gasification and fast pyrolysis
  • c) Hydrothermal liquefaction, hydrothermal gasification and hydrothermal carbonisation
  • d) Intermediate pyrolysis, hydrothermal gasification and ablate pyrolysis
Q.12
Which of the following is the mildest hydrothermal process?
  • a) Hydrothermal gasification
  • b) Hydrothermal liquefaction
  • c) Ablate
  • d) Hydrothermal carbonisation
Q.13
Which of the following hydrothermal processes produces syngas?
  • a) Hydrothermal gasification
  • b) Hydrothermal liquefaction
  • c) Fermentation
  • d) Hydrothermal carbonisation
Q.14
Hydrothermal liquefaction produces _________
  • a) syngas
  • b) bio-crude
  • c) bio-oil
  • d) producer gas
Q.15
Which of the following produces a solid hydro-char?
  • a) Catalytic liquefaction
  • b) Carbonisation
  • c) Hydrothermal gasification
  • d) Hydrothermal carbonisation
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