INSTRUMENTAL ANALYSIS EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

INSTRUMENTAL ANALYSIS EXAMINATION QUESTIONS
AND CORRECT ANSWER WITH EXPLANATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. Instrumental analysis involves:
A. Use of instruments to analyze substances
B. Only manual observation
C. Cooking reactions
D. Weather study
Answer: A
Rationale: Uses instruments for chemical measurement.

2. Spectroscopy is the study of:
A. Interaction of matter with radiation
B. Soil composition
C. Rocks only
D. Plants only
Answer: A
Rationale: Light–matter interaction.

3. Chromatography is used for:
A. Separating mixtures
B. Heating substances
C. Measuring weight
D. Freezing samples
Answer: A
Rationale: Separation technique.

4. Analytical balance measures:
A. Mass
B. Volume
C. Temperature
D. Pressure
Answer: A
Rationale: High-precision mass measurement.

,5. UV-Vis spectroscopy measures:
A. Absorbance of light
B. Sound waves
C. Heat only
D. Mass only
Answer: A
Rationale: Light absorption in UV/visible range.

6. IR spectroscopy measures:
A. Molecular vibrations
B. Atomic weight
C. Pressure
D. Volume
Answer: A
Rationale: Bond vibration analysis.

7. NMR spectroscopy uses:
A. Magnetic fields and radio waves
B. Light only
C. Heat only
D. Sound only
Answer: A
Rationale: Nuclear magnetic resonance.

8. Mass spectrometry measures:
A. Mass-to-charge ratio
B. Temperature
C. Color
D. Volume
Answer: A
Rationale: Identifies molecular mass.

9. Chromatographic stationary phase is:
A. Fixed phase
B. Moving phase
C. Gas only
D. Liquid only
Answer: A
Rationale: Phase that does not move.

, 10. Mobile phase is:
A. Moving solvent or gas
B. Solid only
C. Metal only
D. Gas only
Answer: A
Rationale: Carries analyte.

11. Gas chromatography is used for:
A. Volatile compounds
B. Solids only
C. Metals only
D. Rocks only
Answer: A
Rationale: Separates volatile substances.

12. Liquid chromatography uses:
A. Liquid mobile phase
B. Gas only
C. Solid only
D. Plasma only
Answer: A
Rationale: Separation in liquid medium.

13. HPLC stands for:
A. High Performance Liquid Chromatography
B. High Pressure Liquid Cooling
C. Heavy Particle Liquid Chromatography
D. Hybrid Particle Liquid Column
Answer: A
Rationale: Advanced liquid chromatography.

14. Retention time is:
A. Time a compound stays in column
B. Reaction time
C. Heating time
D. Cooling time
Answer: A
Rationale: Identification parameter.