Grains Processing Quiz

What is the angle of repose of paddy grains?

• 24°

• 36°

• 48°

• 63°

Durable crops are produced and harvested with normally low moisture content of about ____.

• 12%

• 14%

• 25%

• 32%

The following are factors that affect the flow of moisture in grains.

• Cracking of aleurone and the outer pericarp layers

• Internal characteristics of the seed

• Impermeability of the aleurone layer and the outer pericarp

• none of the above

It measure of the capability of a grain kernel of producing a normal seedling.

• seeding rate

• germination

• viability

• all of the above

One bushel is equal to _____.

• 1 m3

• 1.25 m3

• 1 ft3

• 1.25 ft3

The following are measures taken to avoid contamination of grains in the field. Except:

• Preventing lodging of grain in the field, avoiding soil- borne microorganisms.

• Harvesting one week before the full maturity of grains.

• Thoroughly cleaning granaries, storages, elevators after each storage season.

• Avoiding cracking or checking of grain during harvesting and handling.

In grains it is the process that produces heat, water and carbon dioxide.

• respiration

• drying

• tempering

• none of the above

This method of MC determination is commonly used by researchers and is based on the actual extraction of water.

• Primary

• Indirect

• Secondary

• Direct

Moisture migration takes place in a grain bin even though the grain is stored at safe MC level. Which of the following interventions can be done to prevent this from happening.

• Forcing cool air through the grain

• Continous application of heat at the bottom of the bin.

• Surface coating the bin with insulator to reduce heat variation

• none of the above

Variations in grain EMC values depends on the following. Except:

• Variety

• Maturity

• History

• Viability