Equation for predicting EMC of agricultural products is given by... | Agrigyan

• Grain Storage Silo Classifications (Deep vs. Shallow Bins):
• Statement (I): In a deep bin, plane of rupture strikes the opposite side of structure before it meets the grain surface. $\implies$ True.
• In deep grain bins, the internal plane of rupture of the granular mass intersects the opposite vertical wall before reaching the top free surface of the grain.
• Statement (II): A grain bin can be classified as deep bin when the depth of grain is greater than the equivalent diameter. $\implies$ True.
• By Janssen and Airy criteria, a bin is classified as a deep bin when grain depth $H \gt D \tan(45^\circ + \phi/2) \approx D$.
• Conclusion: Both Statement (I) and Statement (II) are true (Option 1).

Correct option: (1) Both Statement (I) and Statement (II) are true.

• Thermal Vapour Compression in Food Processing:
• Thermal Vapour Compression (TVC) uses a steam ejector (thermocompressor) to entrain and compress low-pressure vapor boiled off from the liquid and recycle it as heating steam.
• TVC is universally employed in energy-efficient Evaporators (multiple-effect evaporators in dairy and juice concentration) to dramatically reduce steam consumption.
• It is not applicable in mechanical homogenizers, pasteurizers, or blanchers.
• Conclusion: TVC is used in (A) only (Option 4).

Correct option: (4) (A) only,

• Drying Kinetics and Equipment in Agricultural Processing:
• Statement (I): Majority of the drying of agricultural produce fall under falling rate regime. $\implies$ Correct.
• Cereal grains, pulses, and oilseeds dry almost entirely in the falling-rate drying period, where internal moisture diffusion governs drying rate rather than surface evaporation.
• Statement (II): Spray dryers are commonly used for liquid foods. $\implies$ Correct.
• Spray drying atomizes liquid feeds (milk, coffee, fruit purees) into a hot gas stream to produce dry powders in seconds.
• Conclusion: Both Statement (I) and Statement (II) are correct (Option 1).

Correct option: (1) Both Statement (I) and Statement (I) are correct