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MCQ on Preservation by use of High Temperatures

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1. Berries and Sauerkraut are classified as

  • high-acid foods
  • acid foods
  • medium-acid foods
  • low-acid foods

2. Moist heat at 60°C for 5 to 10 minutes kills most

  • thermophillic bacteria
  • yeasts
  • sclerotia
  • molds

3. TDT is

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  • thermal death transfer
  • transferred death time
  • thermal death time
  • thermal delayed time

4. Heat penetration in processing can be hastened by

  • using glass containers
  • rotation and agitation
  • layering of foods
  • using larger cans

5. The ‘Father of canning is’

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  • Nicholas Appert
  • Spallanzani
  • Lopez
  • Peter Durand

6. Enamel coating in cans containing zinc oxide cannot be used to store

  • berries
  • beets
  • meat
  • corn

7. Propellant gas used for pressurized packaged foods include

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  • oxygen
  • carbon dioxide
  • hydrogen sulfide
  • sulfur gas

8. Heating of cans can be done

  • in a boiling water bath
  • using a steamer
  • in oven heat
  • all the above

9. Meat, fish, etc., are grouped under

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  • low-acid foods
  • medium-acid foods
  • acid foods
  • high-acid foods

10. An exposure at 60°C for 10 to 15 minutes kills

  • ascospores
  • oospores
  • basidiospores
  • none of them
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