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Given below are two statements
Statement (I) : Spiral separator is best suited for removing the vetch weed seeds from wheat seed lot.
Statement (II) : Gravity separator is best suited to separate the seeds damaged by Lygus bug in carrot seed lot.
In light of the above statements, choose the most appropriate answer from the options given below.
EXPLANATION
Seed Cleaning, Sizing & Separation Machinery
- Statement (I) is True: The spiral separator consists of stationary spiral flights wrapped around a central vertical column; round seeds roll down rapidly, gain centrifugal momentum, and are flung into the outer flight, whereas flat, oblong, or wrinkled seeds slide slowly along the inner flight. Hence, it is best suited for separating round seeds from flat/broken particles (e.g., soybean splits, vetch from wheat).
- Statement (II) is False: A spiral separator operates purely on gravity and difference in centrifugal rollability/shape without any motor or electric drive; it is not operated by electrical vibrations or powered mechanical oscillators.
- Conclusion: Statement (I) is true but Statement (II) is false (Option 3).
Correct option: (3) Statement (I) is true but Statement (II) is false.
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