Unit 4 AOS 2 - Organic Analysis (3)

Which of the following is a common ionisation technique used in mass spectrometry?

• Nuclear magnetic resonance

• Electrospray ionisation

• Infrared spectroscopy

• High-performance liquid chromatography

In infrared spectroscopy, which of the following regions is typically used to identify functional groups in organic compounds?

What does NMR stand for in the context of instrumental analysis?

• Nuclear Magnetic Resonance

• Neutron Mass Resonance

• Nuclear Mass Resonance

• Neutron Magnetic Resonance

Which of the following is NOT a type of chromatography technique?

• Gas Chromatography (GC)

• Liquid Chromatography (LC)

• Thin Layer Chromatography (TLC)

• Mass Spectrometry (MS)

In HPLC, what does the acronym stand for?

• High-Pressure Liquid Chromatography

• High-Performance Liquid Chromatography

• High-Purity Liquid Chromatography

• High-Precision Liquid Chromatography

Which of the following is a common application of HPLC?

• Determining the boiling point of a compound

• Separating and identifying components in a mixture

• Measuring the density of a liquid

• Determining the melting point of a solid

Which of the following is NOT typically determined using spectroscopy?

• Molecular structure

• Functional groups

• Molecular weight

• Boiling point

In proton NMR spectroscopy, what does the chemical shift indicate?

• The number of protons in the molecule

• The environment of the protons in the molecule

• The mass of the protons

• The temperature of the sample

Which of the following is a characteristic absorption band for a carbonyl group (C=O) in an infrared spectrum?

In mass spectrometry, what does the base peak represent?

• The peak with the highest m/z ratio

• The peak with the highest intensity

• The peak with the lowest m/z ratio

• The peak with the lowest intensity