MLS Exam 2 Questions & Answers 2024/2025

MLS Exam 2 Questions & Answers 2024/2025 Which of the following lamps provides a continuous spectrum of radiant energy in the visible, near IR and near UV regions of the spectrum? - ANSWERSTungsten filament Which of the following isolates light within a narrow region of the spectrum? - ANSWERSMonochromator Which of the following is not descriptive of a photomultiplier tube? - ANSWERSCannot be used with a chopper Which of the following is false about a photomultiplier tube? - ANSWERSIs composed of an iron plate and a layer of selenium Which type of photodetector employs a linear arrangement that allows it to respond to a specific wavelength resulting in complete UV visible spectrum analysis? - ANSWERSPhotodiode array When performing spectrophotometer quality assurance checks, what is the holmium oxide glass filter used to assess? - ANSWERSWavelength accuracy In spectrophotometric analysis, what is the purpose of the reagent blank? - ANSWERSCorrect for color contribution of the reagents In regard to bichromatic analysis, which of the following is false? - ANSWERSAbsorbance is measured at the spectral absorbance peak for a blank and the sample using the same wavelength The bandpass of a spectrophotometer is 10 nm. If an instrument is set at 540 nm, the wavelengths that are permitted to impinge on the sample will be within what wavelength range? - ANSWERS535 to 545 nm