Questions and answers for exam Preparation

MCQs

Total Questions : 150 | Page 12 of 15 pages

Question 111. Pyrolysis occurs in the presence of _______ oxygen.

large amounts of
absence of
extremely large amount of
low amounts of

Discuss Question

Answer: Option B. -> absence of
Answer: (b).absence of

Question 112. Which of the following best indicates the process of gasification?

Biomass → carbon dioxide and water → producer gas and charcoal → carbon monoxide and hydrogen
Biomass → carbon monoxide and hydrogen → carbon dioxide and water → producer gas and charcoal
Biomass → producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen
Producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen → biomass

Discuss Question

Answer: Option C. -> Biomass → producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen
Answer: (c).Biomass → producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen

Question 113. What is hydrothermal processing?

Heating aqueous slurries of biomass at high pressures to produce products of greater energy density
Heating aqueous slurries of biomass at high temperatures to produce products of lower energy density
Heating aqueous slurries of biomass at low pressures to produce products of greater energy density
Heating aqueous slurries of biomass at low temperatures to produce products of lower energy density

Discuss Question

Answer: Option A. -> Heating aqueous slurries of biomass at high pressures to produce products of greater energy density
Answer: (a).Heating aqueous slurries of biomass at high pressures to produce products of greater energy density

Question 114. Which of the following is best suited for hydrothermal processing?

Forestry byproducts
Wheat
Corn
Sewage sludge

Discuss Question

Answer: Option D. -> Sewage sludge
Answer: (d).Sewage sludge

Question 115. What is anaerobic digestion?

Produces biogas by heating the biomass
Produces biogas using micro-organisms operating in anaerobic conditions
Produces biogas by subjecting the biomass to high pressures
Produces biogas using micro-organisms operating in aerobic conditions

Discuss Question

Answer: Option B. -> Produces biogas using micro-organisms operating in anaerobic conditions
Answer: (b).Produces biogas using micro-organisms operating in anaerobic conditions

Question 116. Catalytic liquefaction occurs at _________