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  • Question
  • 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

  • Correct Answer
  • produced by acetobacter 


  • Beer and Wine problems


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    • 1. 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
    • 2. The organism used for the preparation of sake is

    • Options
    • A. Rhizopus sonti
    • B. Aspergillus oryzae
    • C. Lactobacillus vermiformis
    • D. Saccharomyces pyriformis
    • Discuss
    • 3. 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
    • 4. 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
    • 5. Final alcohol content in wine varies from

    • Options
    • A. 6-9 % by weight
    • B. 8-13 % by weight
    • C. both (a) and (b)
    • D. 13-15 % by weight
    • Discuss
    • 6. After storage and recarbonation, left over yeast is separated by

    • Options
    • A. centrifugation
    • B. filtration
    • C. cell disruption
    • D. need not to be separated
    • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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


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