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Which of the following cannot be done due to the multiplex advantage?

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Which of the following cannot be done due to the multiplex advantage?

(a) Repetitive signals can be summed

(b) Repetitive signals can be averaged

(c) Increases signal to noise ratio

(d) Decreases signal to noise ratio

The question was asked in an online quiz.

Question is taken from Fourier Transform NMR Spectroscopy topic in section Nuclear Magnetic Resonance Spectrometer of Analytical Instrumentation

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Correct option is (d) Decreases signal to noise ratio

To explain: The multiplexing advantage allows improvement of the signal to noise ratio. It also allows repetitive signals to be summed and averaged.

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