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Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
Which technique is used for the separation of chiral compounds?
A. Gas Chromatography.
B. Liquid Chromatography.
C. Chiral Chromatography.
D. Ion-Exchange Chromatography.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
What is the role of a nebulizer in Atomic Absorption Spectroscopy (AAS)?
A. To atomize the sample.
B. To ionize the sample.
C. To vaporize the sample.
D. To mix the sample with the fuel.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
In cyclic voltammetry, what information can be obtained from the peak current?
A. Concentration of analyte.
B. Rate of electron transfer.
C. Diffusion coefficient.
D. Electrode surface area.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
What is the primary use of Differential Scanning Calorimetry (DSC)?
A. Measuring thermal stability.
B. Measuring electrical conductivity.
C. Measuring chemical composition.
D. Measuring optical properties.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
Which of the following is a non-destructive analytical technique?
A. Mass Spectrometry.
B. UV-Vis Spectroscopy.
C. IR Spectroscopy.
D. X-ray Fluorescence (XRF).
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
What is the main advantage of using a capillary column in Gas Chromatography?
A. Higher resolution.
B. Faster analysis.
C. Lower cost.
D. Easier maintenance.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
In potentiometry, what does the Nernst equation relate to?
A. Concentration and potential.
B. Temperature and potential.
C. Pressure and potential.
D. Volume and potential.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
What is the principle of Ion-Exchange Chromatography?
A. Separation based on polarity.
B. Separation based on size.
C. Separation based on charge.
D. Separation based on affinity.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
Which of the following is NOT a type of detector used in Liquid Chromatography (LC)?
A. UV-Vis Detector.
B. Flame Ionization Detector (FID).
C. Refractive Index Detector.
D. Mass Spectrometer.
Muntaha Nasir
CHEMISTRY
-
Analytical Chemistry
What is the main purpose of using an internal standard in quantitative analysis?
A. To improve sensitivity.
B. To calibrate the instrument.
C. To correct for variations in sample preparation and analysis.
D. To identify the analyte.
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