Mass Transfer

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the definition of drying?

  • The process of removing all moisture from the grain
  • The process of removing heat from the grain
  • The process of increasing the moisture content of the grain
  • The process of removing excess moisture from the grain (correct)

What is the equilibrium moisture content (EMC)?

  • The level of moisture at which the grain is in equilibrium with the surrounding air
  • The maximum level of moisture to which grain can be dried under a given set of drying conditions
  • The level of moisture at which the grain is completely dehydrated
  • The minimum level of moisture to which grain can be dried under a given set of drying conditions (correct)

What is the difference between drying and dehydration?

  • Drying and dehydration are the same process
  • Drying is the removal of all moisture, while dehydration is the removal of excess moisture
  • Drying is the removal of excess moisture, while dehydration is the removal of all moisture (correct)
  • Drying is the process of adding moisture, while dehydration is the process of removing moisture

What is the purpose of drying in postharvest operations?

<p>To render the grain safe for storage (D)</p> Signup and view all the answers

What is the respiration process in the grain?

<p>The process of utilizing oxygen and releasing energy in the form of heat (A)</p> Signup and view all the answers

What is the definition of mass transfer?

<p>A process which is a result of diffusion from regions of high concentration to regions of low concentration (C)</p> Signup and view all the answers

What is the primary purpose of drying in postharvest operations?

<p>To prevent deterioration in quality (A)</p> Signup and view all the answers

What is the equilibrium moisture content (EMC)?

<p>The moisture content of the grain when no moisture transfer occurs (A)</p> Signup and view all the answers

What is the process of complete or near complete removal of moisture called?

<p>Dehydration (A)</p> Signup and view all the answers

What happens to crop grains when the vapour pressure of the moisture within the grain is higher than that of the moisture in the atmosphere?

<p>The grain will lose its moisture to the surrounding air (C)</p> Signup and view all the answers

Flashcards

Drying

The process of removing excess moisture from grain.

Equilibrium Moisture Content (EMC)

The lowest moisture content a grain can reach under specific drying conditions.

Dehydration

The process of removing all moisture from a substance.

Purpose of Drying

To keep grain safe for storage by reducing moisture levels.

Signup and view all the flashcards

Grain Respiration

The process where grain uses oxygen and releases energy as heat.

Signup and view all the flashcards

Mass Transfer

The movement of molecules from areas of high concentration to low concentration.

Signup and view all the flashcards

Primary Purpose of Drying

To prevent deterioration in grain quality by reducing moisture.

Signup and view all the flashcards

Equilibrium Moisture Content (EMC)

The moisture content of grain when there's no more moisture movement.

Signup and view all the flashcards

Dehydration

The process of removing all or nearly all moisture from something.

Signup and view all the flashcards

Moisture Movement

When the moisture inside the grain is more than the air around it, the grain will lose moisture to the air.

Signup and view all the flashcards

More Like This

Mastering Mass Transfer
10 questions

Mastering Mass Transfer

UseableMossAgate284 avatar
UseableMossAgate284
Mass Transfer in Chemical Engineering Quiz
4 questions

Mass Transfer in Chemical Engineering Quiz

DauntlessSyntax avatar
DauntlessSyntax
Introduction to Mass Transfer Operations
18 questions

Introduction to Mass Transfer Operations

WellBalancedNashville avatar
WellBalancedNashville
Electrochemistry Quiz on Mass and Charge Transfer
47 questions

Electrochemistry Quiz on Mass and Charge Transfer

SimplerGalaxy7055 avatar
SimplerGalaxy7055
Use Quizgecko on...
Browser
Open
Browser
Browser