Discussion
Statement I: A rubber roll huller gives a better head rice yield than a disc sheller.
Statement II: The rubber rolls shear the husk away with less impact on the kernel.
In the light of the above statements, choose the correct answer.
Answer: C
Correct answer: Both Statement I and Statement II are correct
Both statements are correct and the second explains the first. A rubber roll huller passes the paddy between two rubber-covered rolls running at different speeds, so the husk is sheared open and stripped away while the resilient surface cushions the kernel.
A disc sheller instead abrades the grain between emery-coated discs, which cracks kernels already weakened by drying stresses. The rubber roll's gentler action gives a markedly higher head rice yield, and since whole grains fetch nearly twice the price of brokens, that advantage outweighs the cost of replacing worn rolls.
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