Drying MCQ

Test your knowledge with important Drying MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Drying MCQs at Bissoy

• What is the relationship between equilibrium moisture content (EMC) and free moisture content (FMC)?
  ক

  FMC=Total water content -EMC

  খ

  FMC=Total water content + EMC

  গ

  FMC=Total water content × EMC

  ঘ

  Total water content = EMC × FMC
• The __________ helps to decide the stability of food at particular moisture content in the given environment.
  ক

  equilibrium moisture content

  খ

  psychometric charts

  গ

  equilibrium moisture content and psychometric charts

  ঘ

  chemical properties and psychometric charts
• Harkins-Jura equation does not predict satisfactory EMC values when relative humidity is __________
  ক

  more than 30%

  খ

  more than 40%

  গ

  more than 50%

  ঘ

  more than 60%
• __________ equation is based on potential field theory.
  ক

  Kelvin

  খ

  Harkins-Jura

  গ

  Chung-Pfost

  ঘ

  Henderson
• Which of the following statements about moisture sorption isotherms are correct? Statement 1: It describes the relationship between moisture content and water activity in food. Statement 2: Water activity always increases as moisture content increases.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• __________ was used to describe relationship between the water activity and equilibrium moisture content.
  ক

  Kelvin model

  খ

  Harkins-Jura model

  গ

  Chung-Pfost model

  ঘ

  GAB model
• What is hysteresis effect?
  ক

  Difference between desorption and adsorption curve

  খ

  Difference between desorption and absorption curve

  গ

  Difference between relative humidity and adsorption curve

  ঘ

  Difference between relative humidity and absorption curve
• The _______is the average material moisture content at which the drying rate begins to decline.
  ক

  critical moisture content

  খ

  equilibrium moisture content

  গ

  free moisture content

  ঘ

  bound moisture content
• Henderson equation is based on ______
  ক

  gibbs adsorption

  খ

  enthalpy

  গ

  latent heat

  ঘ

  entropy
• The capillary condensation theory plays a major role in ________ equation.
  ক

  Kelvin

  খ

  Harkins-Jura

  গ

  Chung-Pfost

  ঘ

  Henderson
• Is dew point same as wet bulb?
  ক

  True

  খ

  False
• What is dew point depression?
  ক

  Difference between dry bulb temperature and dew point temperature of air

  খ

  Difference between wet bulb temperature and dew point temperature of air

  গ

  Difference between relative humidity and dew point temperature of air

  ঘ

  Difference between wet bulb depression and dew point temperature of air
• What is wet bulb depression?
  ক

  Difference between dry bulb temperature and wet bulb temperature at any point

  খ

  Difference between relative humidity and wet bulb temperature at any point

  গ

  Difference between dew point and wet bulb temperature at any point

  ঘ

  Difference between dry bulb temperature and dew point temperature at any point
• Who invented the sling psychrometrer?
  ক

  Sir John Leslie

  খ

  Leonardo da Vinci

  গ

  George Babcock

  ঘ

  George Brayton
• What is another name for humidity ratio?
  ক

  Mixing ratio

  খ

  Water ratio

  গ

  Relative humidity ratio

  ঘ

  Bound water ratio
• Which lines indicate relative humidity in the psychometric charts?
  ক

  Diagonals lines

  খ

  Vertical lines

  গ

  Horizontal lines

  ঘ

  Curves
• Which lines indicate dry bulb temperatures in the psychometric chart?
  ক

  Diagonals lines

  খ

  Vertical lines

  গ

  Horizontal lines

  ঘ

  Curves
• Which lines indicate wet bulb temperatures in the psychometric charts?
  ক

  Diagonals lines

  খ

  Vertical lines

  গ

  Horizontal lines

  ঘ

  Curves
• Who invented the psychometric chart?
  ক

  Dr Richard Seligman

  খ

  George Babcock

  গ

  George Brayton

  ঘ

  Willis H. Carrier
• What is psychometric chart?
  ক

  It is the graphical representation of thermodynamic properties

  খ

  It is the graphical representation of chemical properties

  গ

  It is the graphical representation of drying properties

  ঘ

  It is the graphical representation of mechanical properties
• The fundamental principle behind Karl Fischer method is based on the ____________
  ক

  bunsen reaction on iodine in an aqueous medium

  খ

  bunsen reaction between iodine and sulphuric acid in an aqueous medium

  গ

  bunsen reaction between iodine and carbon dioxide in an aqueous medium

  ঘ

  bunsen reaction between iodine and sulfur dioxide in an aqueous medium
• __________ uses reflectance & absorbance principles for calculating the moisture content.
  ক

  Karl Fischer method

  খ

  Nuclear moisture meter method

  গ

  Loss on drying moisture meter method

  ঘ

  Near infrared moisture meter method
• Which one of the following is non-destructive moisture measurement?
  ক

  Karl Fischer method

  খ

  Nuclear moisture meter method

  গ

  Loss on drying moisture method

  ঘ

  Lyophilization
• What is best method to use when the product have multiple layers that may have very different moisture levels?
  ক

  Lyophilization

  খ

  Karl Fischer method

  গ

  Halogen drying

  ঘ

  Microwave moisture meter
• _________ method id based on dielectric principle.
  ক

  Electric moisture meter

  খ

  Karl Fischer method

  গ

  Lyophilization

  ঘ

  Infrared drying
• ______________ of moisture measurement is based on chemical reactions.
  ক

  Lyophilization

  খ

  Karl Fischer method

  গ

  Halogen drying

  ঘ

  Infrared drying
• The oven drying methodology consists of heating by ________
  ক

  conduction

  খ

  convection

  গ

  radiation

  ঘ

  both radiation and convection
• Halogen and infrared drying are the examples of _________________
  ক

  thermogravimetric analysis

  খ

  freeze drying

  গ

  non thermal analysis

  ঘ

  pressure based analysis
• The measure of moisture content during thermogravimetric analysis is by the process of _________
  ক

  water vaporization

  খ

  freezing

  গ

  oven drying

  ঘ

  sun drying
• _____________ is the amount of moisture a material will absorb relative to ambient temperature and humidity conditions.
  ক

  Lyophilization

  খ

  Hygroscopic action

  গ

  Hydrophobic action

  ঘ

  Hydrophilic action