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2345372318

Authored by kalenderk akademik

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2345372318
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a possible consequence of leaving 100% water standing in the detector flow cell?

Optical enhancement

Algae growth

Pressure decrease

Increased sensitivity

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does "purging" the HPLC pump help achieve?

Reduces detector noise

Changes solvents by connecting pump heads to waste

Increases retention time

Cleans column end fittings

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is a characteristic of an overpressure or blockage in the HPLC system?

Decreased peak height

No signal

Sudden increase in system pressure

Lower resolution

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of solvent inlet filters?

Regulate flow pressure

Maintain constant detector wavelength

Prevent particulate contamination

Reduce peak tailing

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which maintenance task should be done daily or after changing solvents for smooth pump operation?

Conditioning

Leak testing

Detector calibration

Degassing

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes peak fronting?

Wide peaks with a tail

Asymmetrical peak with leading edge

Two adjacent peaks combined

Peak shifted with high baseline

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which factor contributes to "dispersion" in the HPLC system?

Temperature fluctuations in oven

Improper injection technique

Bandspreading from tubing and flow cells

Air bubbles in detector

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