6. As the fermentation for the ethanol production is over, the cells are separated to get the biomass of yeast cells that is used

A. for next fermentation
B. as single-cell protein for animal feed
C. as manure
D. all of the above

7. The fermentor can be sterilized by

A. keeping it in the oven
B. steam under pressure
C. boiling
D. all of these

8. Candida utilis is used for the fermentation of waste sulfate liquor since it ferments

A. hexoses only
B. pentoses only
C. both hexoses and pentoses
D. none of these

9. Yeast is used in the production of

A. ethyl alcohol
B. acetic acid
C. cheese
D. curd

10. S cerevisiae start producing ethanol within

A. 10 h
B. 12 h
C. 15 h
D. 24 h