Drying Vegetables: New Technology, Equipment, and Examples MCQ

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• Which of the following drier is use for manufacturing instant mashed potato?
  ক

  Roller drier

  খ

  Solar drier

  গ

  Freeze drier

  ঘ

  Oven drier
• Why are vegetables treated with sulphur dioxide before drying process?
  ক

  It acts as anti-browning agent

  খ

  It acts as catalysts

  গ

  It removes surface moisture content

  ঘ

  It activates the catalysts
• Which of the following is also called as dewatering and impregnation soaking (DIS) process?
  ক

  Osmotic dehydration

  খ

  Freeze drying

  গ

  Solar drying

  ঘ

  Canning
• Osmosis is an absorption process.
  ক

  True

  খ

  False
• What is the main purpose of osmotic dehydration?
  ক

  Reduce water activity

  খ

  Reduce temperature

  গ

  Increase water activity

  ঘ

  Increase temperature
• What happens if the product consists of high sugar?
  ক

  Dries slowly

  খ

  Dries quickly

  গ

  Drying does not depend on sugar concentration

  ঘ

  Drying depends on temperature of the sugar
• Higher the humidity, the slower the drying.
  ক

  True

  খ

  False
• What are the disadvantages of oven drying?
  ক

  Requires minimum heating periods and cooling phases

  খ

  Requires extended cooling phases

  গ

  Requires extended heating periods

  ঘ

  Requires extended heating periods and cooling phases
• What is a drying oven called?
  ক

  Kiln

  খ

  Oven

  গ

  Drying chamber

  ঘ

  Product chamber
• What is dehydration process?
  ক

  Removal of water by evaporation

  খ

  Removal of field heat

  গ

  Removal of water by crystallization

  ঘ

  Removal of water by vacuum