NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What does a higher sieve number indicate?

  1. Lower purity of the substance

  2. More holes per inch

  3. Larger particle size

  4. Less efficiency

The correct answer is: More holes per inch

A higher sieve number indicates more holes per inch in the sieve. The sieve number corresponds to the number of openings per linear inch in the mesh of the sieve. Therefore, the correct answer is B: More holes per inch. Options A, C, and D are incorrect: A. Lower purity of the substance: The sieve number does not indicate the purity of the substance. C. Larger particle size: A higher sieve number actually indicates smaller particle size because there are more holes per inch in the sieve. D. Less efficiency: The sieve number does not relate to the efficiency of the sieving process.

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