Questions and answers for exam Preparation

MCQs

Total Questions : 150 | Page 13 of 15 pages

Question 121. What are the three types of hydrothermal processing of biomass?

Hydrothermal liquefaction, hydrothermal gasification and ablate pyrolysis
Hydrothermal liquefaction, hydrothermal gasification and fast pyrolysis
Hydrothermal liquefaction, hydrothermal gasification and hydrothermal carbonisation
Intermediate pyrolysis, hydrothermal gasification and ablate pyrolysis

Discuss Question

Answer: Option C. -> Hydrothermal liquefaction, hydrothermal gasification and hydrothermal carbonisation
Answer: (c).Hydrothermal liquefaction, hydrothermal gasification and hydrothermal carbonisation

Question 122. Which of the following hydrothermal processes produces syngas?

Hydrothermal gasification
Hydrothermal liquefaction
Fermentation
Hydrothermal carbonisation

Discuss Question

Answer: Option A. -> Hydrothermal gasification
Answer: (a).Hydrothermal gasification

Question 123. Which of the following is the mildest hydrothermal process?

Hydrothermal gasification
Hydrothermal liquefaction
Ablate
Hydrothermal carbonisation

Discuss Question

Answer: Option D. -> Hydrothermal carbonisation
Answer: (d).Hydrothermal carbonisation

Question 124. Hydrothermal liquefaction produces _________

syngas
bio-crude
bio-oil
producer gas

Discuss Question

Answer: Option C. -> bio-oil
Answer: (c).bio-oil

Question 125. Which of the following produces a solid hydro-char?

Catalytic liquefaction
Carbonisation
Hydrothermal gasification
Hydrothermal carbonisation

Discuss Question

Answer: Option D. -> Hydrothermal carbonisation
Answer: (d).Hydrothermal carbonisation

Question 126. What ensures consistency of temperature in fluidized gasifier?

Gasification agent
Air-fluidized bed material
Biomass
Air non-permeable bed material

Discuss Question

Answer: Option B. -> Air-fluidized bed material
Answer: (b).Air-fluidized bed material

Question 127. What is unique about the gasification agent entering in a fluidized gasifier?

Enters from bottom at a relatively fast rate as compared to a fixed bed gasifier
Enters from bottom at a relatively slow rate as compared to a fixed bed gasifier
Enters from top at a relatively fast rate as compared to a fixed bed gasifier
Enters from top at a relatively slow rate as compared to a fixed bed gasifier

Discuss Question

Answer: Option A. -> Enters from bottom at a relatively fast rate as compared to a fixed bed gasifier
Answer: (a).Enters from bottom at a relatively fast rate as compared to a fixed bed gasifier

Question 128. What are the three types of fluidized gasifiers used?

Single fluidized bed, dual fluidized bed and bubbling fluidized bed
Straight fluidized bed, dual fluidized bed and bubbling fluidized bed
Circulating fluidized bed, dual fluidized bed and bubbling fluidized bed
Single fluidized bed, dual fluidized bed and straight fluidized bed

Discuss Question

Answer: Option C. -> Circulating fluidized bed, dual fluidized bed and bubbling fluidized bed
Answer: (c).Circulating fluidized bed, dual fluidized bed and bubbling fluidized bed

Question 129. How is the temperature maintained in a bubbling fluidized bed?

Biomass
Gasification agent
A constant ratio of biomass and gasification agent
Manipulating the ratio of biomass and gasification agent

Discuss Question

Answer: Option D. -> Manipulating the ratio of biomass and gasification agent
Answer: (d).Manipulating the ratio of biomass and gasification agent

Question 130. What is the temperature range in a bubbling fluidized bed?