Q. Which of the following applications is the product gas from downdraft gasifier suitable for?

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Q. Which of the following applications can the producer gas be used for?

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Q. Which of the following are keys to design a gasifier?

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Q. How does air enter and exit in a cross-draft gasifier?

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Q. Ash sticks to the side in a cross-draft gasifier.

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Q. Which of the following is a substrate for biogas production?

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Q. Which of the following is a preferred substrate for biogas production? Note that TS stands for total solids.

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Q. What are the categories for organic dry matter on the basis of total solids (TS)?

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Q. Which among the following is the best source for methane production?

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Q. Which of the following is used to produce biogas from biomass?

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Q. Which of the following best indicates the steps of anaerobic digestion?

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Q. Which of the following best indicates the steps inside an anaerobic digester?

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Q. What occurs in the hydrolysis step of anaerobic digestion?

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Q. Acidogenesis further break down the molecules received from hydrolysis in anaerobic digestion.

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Q. Which of the following is produced in acetogenesis?

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Q. Which of the following is produced apart from acetates in acetogenesis step in anaerobic digestion?

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Q. What are the two ways to produce methane in methanogenesis step?

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Q. Methanogens can directly use the products of hydrolysis to produce methane.

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Q. What are the two main products of anaerobic digestion?

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Q. Gases emitted from the digester indicates the amount of biomass left to be broken down.

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