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CSCI 0913 Primary Processing of Grain Crops: Chapter 7 Quiz

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CSCI 0913 Primary Processing of Grain Crops: Chapter 7 Quiz

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Questions and Answers

Why does drying permit the farmer to secure a greater economic return?

To prevent production operations for cotton and corn

To maintain a low moisture content for rice

To produce waste products from livestock feed

To minimize field damage and shatter loss (correct)

What happens when dry rice is exposed to air with high relative humidity?

The rice grains will change color

The rice grains will release water to the air

The rice grains will absorb water from the air (correct)

The rice grains will not react to the air's humidity

What are the two processes occurring at the same time during drying?

Mass transfer of moisture and heat absorption

Mass transfer of moisture and chemical reactions

Heat transfer and mass transfer of moisture (correct)

Heat transfer and chemical reactions

Where is moisture present in paddy grain?

At the surface of the grain and inside the kernel (A) Signup and view all the answers

Why does internal moisture evaporate much slower than surface moisture?

It first has to move from the kernel to the outside surface (B) Signup and view all the answers

What occurs during the initial induction period of drying?

Heat transfer to raise the temperature of the material (D) Signup and view all the answers

What happens during the constant rate period of drying?

Drying occurs at a constant rate (B) Signup and view all the answers

What is one reason why early harvest at high moisture content is beneficial for grain crops?

It minimizes field damage and shatter loss (A) Signup and view all the answers

Why is it important for seeds to maintain viability over long periods?

To ensure sustainable crop production (D) Signup and view all the answers

What are waste products converted into during drying in grain crops?

Useful products such as livestock feed from fruit pulp and almond hulls. (D) Signup and view all the answers

What is the primary purpose of drying agricultural products?

To remove moisture to a safe level for storage (C) Signup and view all the answers

What is the essential process involved in drying agricultural crops?

Evaporation of water from the crops (C) Signup and view all the answers

Which property of air is most relevant to the drying process?

Vapor pressure (B) Signup and view all the answers

What knowledge is essential to understand the operation of drying?

Psychrometrics (A) Signup and view all the answers

What are the two methods involved in drying grain?

Exposing grain to ambient air with low relative humidity or to heated air (C) Signup and view all the answers

What is the effect of vaporizing water in the drying process?

It removes moisture from the product (B) Signup and view all the answers