Drying Rate MCQ

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• What happens to the drying rate during constant rate of drying period?
  ক

  It reduces

  খ

  It increases

  গ

  Constant

  ঘ

  Becomes negligible
• What is drying constant?
  ক

  Mechanisms of heat and mass transport phenomena

  খ

  Mechanism of heat phenomena

  গ

  Mechanism of mass transport phenomena

  ঘ

  Mechanism of drying phenomena
• How does humidity affect drying rate?
  ক

  No effect

  খ

  Directly proportional

  গ

  Indirect proportional

  ঘ

  Linear increase
• What type of drying takes place when the food has high fat contents?
  ক

  Slow

  খ

  Fast

  গ

  Constant

  ঘ

  Quick
• Name the phenomenon which transfers moisture during second falling drying rate period?
  ক

  Liquid diffusion

  খ

  Capillary movement

  গ

  Vapor diffusion

  ঘ

  Liquid diffusion, capillary movement, and vapor diffusion.
• At what stage the case hardening of a material takes place?
  ক

  Constant rate period

  খ

  Falling rate period

  গ

  Initial rate period

  ঘ

  Equilibrium
• What is the independent factor of the constant rate period?
  ক

  Moisture content

  খ

  Temperature

  গ

  Pressure

  ঘ

  Humidity
• What happens to the drying rate when it reaches critical moisture content?
  ক

  Declines

  খ

  Increases gradually

  গ

  Stops

  ঘ

  Becomes constant
• Which of the following statements are true about drying? Statement 1: Latent heat of vaporization is not necessary. Statement 2: Moisture must be transported out from the food.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• Rate of drying depends on which of the following statement? Statement 1: Vapor pressure of water at drying temperature. Statement 2: Vapor pressure in the external environment.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False