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9. Which of the following is an optical component in many analytical instruments?

A. Thermocouple
B. Prism
C. Microprocessor
D. Burette
10. The sample introduction system in gas chromatography is typically a:
A. UV lamp
B. Syringe injector
C. Thermocouple
D. Solvent reservoir
11. Which of the following is NOT part of Quality Assurance?
A. Method validation
B. Routine calibration
C. Random sampling of data
D. Customer feedback
12. Calibration of an analytical instrument means:
A. Cleaning the instrument
B. Adjusting the instrument to give correct readings
C. Replacing old parts
D. Training users on the instrument
13. Which of the following is used as a reference during calibration?
A. Unknown sample
B. Certified Reference Material (CRM)
C. Control chart
D. Blank sample
14. Precision in analytical measurements refers to:
A. Closeness of results to the true value
B. Agreement between replicate measurements
C. Systematic error in the method
D. Sensitivity of the instrument
15. Which term describes the systematic deviation from the true value?
A. Precision
B. Bias
C. Random error
D. Sensitivity
16. A blank sample in analytical chemistry is used to:
A. Calibrate the instrument baseline
B. Determine the concentration of the analyte

1 answer

Here are the answers to the multiple-choice questions provided:

  1. Which of the following is an optical component in many analytical instruments?
    B. Prism

  2. The sample introduction system in gas chromatography is typically a:
    B. Syringe injector

  3. Which of the following is NOT part of Quality Assurance?
    D. Customer feedback

  4. Calibration of an analytical instrument means:
    B. Adjusting the instrument to give correct readings

  5. Which of the following is used as a reference during calibration?
    B. Certified Reference Material (CRM)

  6. Precision in analytical measurements refers to:
    B. Agreement between replicate measurements

  7. Which term describes the systematic deviation from the true value?
    B. Bias

  8. A blank sample in analytical chemistry is used to:
    A. Calibrate the instrument baseline

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