Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

In Liquid Chromatography, what does the term 'isocratic' refer to?

Isocratic elution in LC refers to using a mobile phase with a constant composition throughout the separation process.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

Which technique is best suited for the quantitative analysis of metals in a sample?

AAS is highly effective for the quantitative determination of metals in various samples.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

What is the primary application of X-ray diffraction (XRD) in analytical chemistry?

XRD is used to determine the crystal structure of materials by measuring the diffraction patterns of X-rays.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

In FTIR spectroscopy, what does 'FT' stand for?

FTIR stands for Fourier Transform Infrared Spectroscopy, which involves converting raw data into a spectrum using the Fourier Transform algorithm.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

Which of the following is a common method for sample preparation in Trace Metal Analysis?

Digestion is used to break down complex matrices and release trace metals for analysis.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

What is the principle of Gel Electrophoresis?

Gel electrophoresis separates molecules based on size and charge, with smaller molecules moving faster through the gel matrix.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

In titration, what is the role of an indicator?

Indicators change color at the end point of a titration, indicating that the reaction is complete.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

Which method is used to determine the particle size distribution in a sample?

DLS measures the scattering of light by particles in suspension to determine their size distribution.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

In NMR spectroscopy, what does the chemical shift represent?

Chemical shift indicates the resonance frequency of nuclei relative to a standard in a magnetic field, providing information about the chemical environment.
Muntaha Nasir CHEMISTRY   -   Analytical Chemistry

What is the purpose of a blank solution in spectrophotometry?

A blank solution contains all reagents except the analyte, used to correct for background absorption or interference.

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