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Home Biotechnology Beer and Wine Comments

  • Question
  • After storage and recarbonation, left over yeast is separated by


  • Options
  • A. centrifugation
  • B. filtration
  • C. cell disruption
  • D. need not to be separated

  • Correct Answer
  • filtration 


  • Beer and Wine problems


    Search Results


    • 1. Volatile acidity is

    • Options
    • A. also known as total acidity
    • B. produced by acetobacter
    • C. produced by Brettanomyces
    • D. known for producing a mousy or barnyard aroma
    • Discuss
    • 2. The crystal-like material sometimes found in wine bottles is

    • Options
    • A. residual diatomaceous earth
    • B. tannin
    • C. prevented by cold stabilizing
    • D. caused by excessive malic acid
    • Discuss
    • 3. The organism used for the preparation of sake is

    • Options
    • A. Rhizopus sonti
    • B. Aspergillus oryzae
    • C. Lactobacillus vermiformis
    • D. Saccharomyces pyriformis
    • Discuss
    • 4. Which is not the purpose of punching down?

    • Options
    • A. To oxidize the wine
    • B. To extract tannin
    • C. To reduce possible microbial spoilage
    • D. To keep the cap moist
    • Discuss
    • 5. The process of making malt as soluble as possible by using enzymes adjuncts etc is known as

    • Options
    • A. brewing
    • B. malting
    • C. mashing
    • D. pitching
    • Discuss
    • 6. Which of the following organism is used for the fermentation of grapes?

    • Options
    • A. Rhizopus sonti
    • B. Aspergillus oryzae
    • C. Lactobacillus vermiformis
    • D. Saccharomyces cerevisiae
    • Discuss
    • 7. Lagers are the beer in which fermentation is carried out using

    • Options
    • A. top yeast
    • B. bottom yeast
    • C. either of these
    • D. middle yeast
    • Discuss
    • 8. Sonti is

    • Options
    • A. rice beer or wine of India
    • B. wheat beer or wine
    • C. barley beer or wine
    • D. rice beer or wine of Japan
    • Discuss
    • 9. If the malolactic fermentation is not carried out,

    • Options
    • A. the wine will have an odd odor
    • B. malic acid may precipitate, leaving small crystals
    • C. the wine may be microbially unstable
    • D. the wine will be too low in acid
    • Discuss
    • 10. Ales are the beer in which fermentation is carried out using

    • Options
    • A. top yeast
    • B. bottom yeast
    • C. either of the above
    • D. middle yeast
    • Discuss


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