Which of the following is a traditional method of drying crops?
Analysis & Theory
Sun drying is a traditional and low-cost method that uses natural sunlight to remove moisture.
Which drying method uses trays and heated air in a chamber?
Analysis & Theory
Tray dryers use stacked trays and forced heated air for uniform drying of seeds or crops.
Which method of drying is most suitable for heat-sensitive materials?
Analysis & Theory
Vacuum drying removes moisture at low temperatures, protecting heat-sensitive products.
In which drying method are particles suspended in a stream of hot air?
Analysis & Theory
In fluidized bed drying, particles are suspended and mixed in hot air, ensuring uniform drying.
Which of the following is an advantage of mechanical drying over sun drying?
D
Controlled drying conditions
Analysis & Theory
Mechanical drying provides consistent and controlled drying independent of weather conditions.
Which type of dryer uses the principle of sublimation for moisture removal?
Analysis & Theory
Freeze drying removes moisture by sublimation, turning ice directly into vapor under vacuum.
Which method of drying involves spraying liquid into hot air to dry it instantly?
Analysis & Theory
Spray drying atomizes a liquid into fine droplets and exposes them to hot air, drying them rapidly.
What is the main disadvantage of sun drying?
B
Risk of contamination and weather dependence
Analysis & Theory
Sun drying is simple but prone to contamination, uneven drying, and weather-related issues.
Which dryer is commonly used for drying seeds in seed processing units?
Analysis & Theory
Batch dryers are commonly used in seed processing for uniform drying under controlled conditions.
Microwave drying removes moisture by:
C
Internal heating using electromagnetic radiation
Analysis & Theory
Microwave drying heats moisture inside the material, causing rapid internal evaporation.