Physical Characteristics of Grains Importance

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Questions and Answers

Why is it important to study the physical properties of grains?

  • To analyze the chemical composition of grains
  • To design machines and structures for production and storage (correct)
  • To estimate the market value accurately
  • To determine the taste and color of the grains

What is a key application of solving problems related to heat and mass transfer in grain processing?

  • Improving the quality of grain storage
  • Enhancing the aroma of grains
  • Enhancing the shelf life of grains (correct)
  • Increasing the weight of the grains

How are shape and size related when describing a physical object?

  • Only shape influences the physical properties of an object
  • Size is crucial, while shape is optional
  • Both are necessary for a complete description of an object (correct)
  • Shape is irrelevant when considering size

Which criteria can be used to describe the shape and size of grains?

<p>Comparison with a charted standards (D)</p> Signup and view all the answers

What is a characteristic used to classify types of paddy based on ISO standards?

<p>Length/width ratio (A)</p> Signup and view all the answers

What is a possible disadvantage of defining product shape using standard charts and descriptive terms?

<p>It is a subjective assessment prone to personal bias. (C)</p> Signup and view all the answers

How can the axial dimensions of a sample be measured according to the text?

<p>By tracing the outline of the sample's projection with a photographics enlarger. (B)</p> Signup and view all the answers

Why is the surface area of a product, such as paddy grain, important according to the text?

<p>It affects porosity, angle of repose, and angle of friction. (B)</p> Signup and view all the answers

In the context of rice particles, what length characterizes brewer's rice?

<p>Less than 3/8 of the whole unbroken milled rice kernel length. (C)</p> Signup and view all the answers

What defines a large broken milled grain in terms of length compared to the whole unbroken milled rice kernel?

<p>Between 3/8 and 6/8 of the length. (A)</p> Signup and view all the answers

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