Ethanol Production – Section 1

1. If starch-containing substrates are used for ethanol production, yeast strain can’t be used directly because

A. it doesn’t contain amylases to hydrolyze starch
B. starch is not a suitable substrate for the production of ethanol
C. it is converted to pentose sugar
D. none of the above

Correct Answer: A. it doesn’t contain amylases to hydrolyze starch

2. Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?

A. Impeller
B. Baffles
C. Sparger
D. All of these

Correct Answer: B. Baffles

3. What are the different substrates used for ethanol production?

A. Starch containing substrate
B. Juices from sugarcane or molasses or sugar beet
C. Waste product from wood or processed wood
D. All of the above

Correct Answer: D. All of the above

4. Which of the following is used for aeration in a fermentor?

A. Impeller
B. Baffles
C. Sparger
D. All of these

Correct Answer: C. Sparger

5. Ethanol is produced by

A. continuous fermentation
B. batch fermentation
C. both (a) and (b)
D. none of these

Correct Answer: C. both (a) and (b)

Leave A Comment?

1 × 4 =