Question

Given below are two statements:
Statement (I): The fineness modulus indicates the uniformity of grind in the resultant product of a feed grinder.
Statement (II): The uniformity index indicate distribution of fines and coarses in the resultant product.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are correct.
• B. Both Statement (I) and Statement (II) are incorrect.
• C. Statement (I) is correct but Statement (II) is incorrect.
• D. Statement (I) is incorrect but Statement (II) is correct.

Hint:

Fineness modulus only indicates the average size of the particles, not how uniform the grind is.
A uniform batch and a highly varied batch can mathematically have the same fineness modulus.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Size reduction evaluation in animal feeds utilizes specific parameters to define the properties of the ground product.
These include the fineness modulus and the uniformity index.

Step 3: Detailed Explanation:
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Statement I evaluation: The fineness modulus is an index representing the average size of the ground particles. It does not measure the uniformity of the particles. Hence, Statement I is incorrect.
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Statement II evaluation: The uniformity index is determined using a sieve analysis to specify the relative proportions of coarse, medium, and fine particles (expressed as a ratio, e.g., 1:6:3). This index indicates how evenly the sizes are distributed. Hence, Statement II is correct.

Step 4: Final Answer:
Statement (I) is incorrect but Statement (II) is correct.