Factors Affecting Rate of Dehydration MCQ

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• Does boiling point decrease with pressure?
  ক

  True

  খ

  False
• Who coined the term latent heat?
  ক

  Rudolf Clausius

  খ

  Thomas Young

  গ

  Joseph Black

  ঘ

  Evangelista Torricelli
• At what stage the drying rate curve declines?
  ক

  Transient early stage

  খ

  Constant rate period

  গ

  Rising rate period

  ঘ

  Falling rate period
• Which of the following mechanism is observed in drying constant?
  ক

  Heat and mass transport phenomena

  খ

  Heat phenomena

  গ

  Mass transport phenomena

  ঘ

  Drying phenomena
• Which of the following component acts as an independent factor in constant rate period?
  ক

  Moisture content

  খ

  Temperature

  গ

  Pressure

  ঘ

  Humidity
• Which of the following statements about drying process are correct? Statement 1: It depends on latent heat of vaporization. Statement 2: It does not transport any moisture.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• Which of the following statements about drying rate are correct? Statement 1: It depends on vapor pressure of water at drying temperature. Statement 2: It depends on humidity in the external atmosphere.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• Which of the following factors influence the drying behavior?
  ক

  Porosity, hygroscopic properties

  খ

  Porosity, homogeneity

  গ

  Homogeneity, hygroscopic properties

  ঘ

  Porosity, homogeneity, and hygroscopic properties
• At which stage of drying the water can be easily removed?
  ক

  Transient early stage

  খ

  Constant rate period

  গ

  Rising rate period

  ঘ

  Falling rate period
• Which of the following is seen only as a phase change?
  ক

  Latent heat

  খ

  Specific heat

  গ

  Enthalpy

  ঘ

  Entropy
• Drying process inactivate the enzyme.
  ক

  True

  খ

  False
• What is the main driving force in heat transfer?
  ক

  Temperature difference

  খ

  Temperature and pressure difference

  গ

  Concentration difference

  ঘ

  Pressure difference
• Which of the following factors influences the drying rate?
  ক

  Final moisture content

  খ

  Pressure

  গ

  pH

  ঘ

  Composition of the product
• At what temperature does critical point occurs in water?
  ক

  374°C

  খ

  91.85°C

  গ

  -146°C

  ঘ

  132°C
• Which of the following condition is represented through the phase diagrams?
  ক

  Chemical conditions of a matter

  খ

  Physical conditions of a matter

  গ

  Electromagnetic conditions of a matter

  ঘ

  Mechanical conditions of a matter