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Instrumental Analysis

Description: This quiz is designed to assess your knowledge of Instrumental Analysis, a branch of analytical chemistry that deals with the identification and quantification of chemical substances using various instruments.
Number of Questions: 15
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Tags: instrumental analysis analytical chemistry spectroscopy chromatography electrochemistry
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Which of the following techniques is used to separate and identify compounds based on their interaction with a stationary phase?

  1. Spectrophotometry

  2. Chromatography

  3. Electrochemistry

  4. Mass spectrometry

Show answer
Correct Option: B
Explanation:

Chromatography is a separation technique that separates compounds based on their different affinities for a stationary phase and a mobile phase.

What is the principle behind spectrophotometry?

  1. Measuring the absorption of light by a sample

  2. Measuring the emission of light by a sample

  3. Measuring the change in electrical potential of a sample

  4. Measuring the mass-to-charge ratio of ions in a sample

Show answer
Correct Option: A
Explanation:

Spectrophotometry is a technique that measures the absorption of light by a sample to determine its concentration or other properties.

Which type of spectroscopy is used to identify and quantify elements in a sample?

  1. Atomic absorption spectroscopy

  2. Atomic emission spectroscopy

  3. Infrared spectroscopy

  4. Nuclear magnetic resonance spectroscopy

Show answer
Correct Option: A
Explanation:

Atomic absorption spectroscopy is a technique that measures the absorption of light by atoms in a sample to determine their concentration.

What is the principle behind electrochemistry?

  1. Measuring the change in electrical potential of a sample

  2. Measuring the current flowing through a sample

  3. Measuring the mass-to-charge ratio of ions in a sample

  4. Measuring the absorption of light by a sample

Show answer
Correct Option: A
Explanation:

Electrochemistry is a technique that measures the change in electrical potential of a sample to determine its concentration or other properties.

Which of the following techniques is used to separate and identify compounds based on their mass-to-charge ratio?

  1. Spectrophotometry

  2. Chromatography

  3. Electrochemistry

  4. Mass spectrometry

Show answer
Correct Option: D
Explanation:

Mass spectrometry is a technique that separates and identifies compounds based on their mass-to-charge ratio.

What is the principle behind nuclear magnetic resonance spectroscopy (NMR)?

  1. Measuring the absorption of light by a sample

  2. Measuring the emission of light by a sample

  3. Measuring the change in electrical potential of a sample

  4. Measuring the magnetic properties of atomic nuclei

Show answer
Correct Option: D
Explanation:

NMR spectroscopy is a technique that measures the magnetic properties of atomic nuclei to determine the structure and dynamics of molecules.

Which of the following techniques is used to identify and quantify organic compounds?

  1. Atomic absorption spectroscopy

  2. Atomic emission spectroscopy

  3. Infrared spectroscopy

  4. Nuclear magnetic resonance spectroscopy

Show answer
Correct Option: C
Explanation:

Infrared spectroscopy is a technique that measures the absorption of infrared light by a sample to identify and quantify organic compounds.

What is the principle behind X-ray diffraction?

  1. Measuring the absorption of light by a sample

  2. Measuring the emission of light by a sample

  3. Measuring the change in electrical potential of a sample

  4. Measuring the scattering of X-rays by a sample

Show answer
Correct Option: D
Explanation:

X-ray diffraction is a technique that measures the scattering of X-rays by a sample to determine its structure.

Which of the following techniques is used to identify and quantify inorganic compounds?

  1. Atomic absorption spectroscopy

  2. Atomic emission spectroscopy

  3. Infrared spectroscopy

  4. Nuclear magnetic resonance spectroscopy

Show answer
Correct Option: B
Explanation:

Atomic emission spectroscopy is a technique that measures the emission of light by atoms in a sample to identify and quantify inorganic compounds.

What is the principle behind fluorescence spectroscopy?

  1. Measuring the absorption of light by a sample

  2. Measuring the emission of light by a sample

  3. Measuring the change in electrical potential of a sample

  4. Measuring the mass-to-charge ratio of ions in a sample

Show answer
Correct Option: B
Explanation:

Fluorescence spectroscopy is a technique that measures the emission of light by a sample after it has been excited by light of a shorter wavelength.

Which of the following techniques is used to separate and identify compounds based on their size and charge?

  1. Spectrophotometry

  2. Chromatography

  3. Electrochemistry

  4. Electrophoresis

Show answer
Correct Option: D
Explanation:

Electrophoresis is a technique that separates and identifies compounds based on their size and charge.

What is the principle behind potentiometry?

  1. Measuring the change in electrical potential of a sample

  2. Measuring the current flowing through a sample

  3. Measuring the mass-to-charge ratio of ions in a sample

  4. Measuring the absorption of light by a sample

Show answer
Correct Option: A
Explanation:

Potentiometry is a technique that measures the change in electrical potential of a sample to determine its concentration or other properties.

Which of the following techniques is used to identify and quantify proteins?

  1. Atomic absorption spectroscopy

  2. Atomic emission spectroscopy

  3. Infrared spectroscopy

  4. Mass spectrometry

Show answer
Correct Option: D
Explanation:

Mass spectrometry is a technique that can be used to identify and quantify proteins.

What is the principle behind thermal analysis?

  1. Measuring the change in temperature of a sample

  2. Measuring the change in mass of a sample

  3. Measuring the change in electrical potential of a sample

  4. Measuring the absorption of light by a sample

Show answer
Correct Option: A
Explanation:

Thermal analysis is a technique that measures the change in temperature of a sample as it is heated or cooled.

Which of the following techniques is used to identify and quantify drugs?

  1. Atomic absorption spectroscopy

  2. Atomic emission spectroscopy

  3. Infrared spectroscopy

  4. Chromatography

Show answer
Correct Option: D
Explanation:

Chromatography is a technique that can be used to identify and quantify drugs.

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