Quiz on UV / Visible Spectroscopy

What is the unit for frequency?

• Watt (W)

• Hertz (Hz)

• Joule (J)

• Newton (N)

What does the symbol λ represent in spectroscopy?

• Frequency

• Wavelength

• Energy

• Intensity

Which of the following is a technique used in Absorption Spectroscopy?

• UV / Visible Spectroscopy

• NMR Spectroscopy

• Mass Spectroscopy

• X-ray Spectroscopy

What is the relationship between wavelength and frequency expressed as?

• c = νλ

• A = εCl

• I = I0 e^(-Kl)

• E = hν

What is the primary focus of Beer’s Law?

• Energy of photons

• Wavelength of light

• Concentration of solution

• Intensity of light

What is the term for the part of a molecule responsible for imparting color?

• Photon

• Spectrometer

• Chromophore

• Auxochrome

Which electronic transition requires the least energy?

• n → π*

• n → σ*

• π → π*

• σ → σ*

What is the effect called when absorption maxima shifts to longer wavelengths?

• Hyperchromic shift

• Isosbestic point

• Bathochromic shift

• Hypsochromic shift

What does Lambert’s Law describe?

• Emission of light from a source

• Absorption of light in a solution

• Intensity of radiation

• Energy levels of electrons

Which of the following regions does UV radiation cover?

• 600 nm to 1000 nm

• 200 nm to 600 nm

• 400 nm to 800 nm

• 10 nm to 400 nm