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Following the Accidental Release of a Batch of Phones That

question 102

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Following the accidental release of a batch of phones that failed screening control, a manufacturer of mobile phones replaces all such phones at no cost to the user-even taking care of shipping and delivery. Which step in the control process does this example represent?


Definitions:

Chemical Shift

In nuclear magnetic resonance (NMR) spectroscopy, chemical shift is the relative change in the frequency of nuclear magnetic resonance of a nucleus compared to a reference standard.

Aromatic Protons

Hydrogen atoms attached to the carbon atoms of an aromatic ring, characterized by distinct NMR signals.

Magnetic Field

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Nuclear Magnetic Resonance

A spectroscopic technique that exploits the magnetic properties of certain atomic nuclei to determine the physical and chemical properties of atoms or the molecules in which they are contained.

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