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2 991
Regarding the pharmaceutical application of UV spectroscopy. All of the following statements are
true EXCEPT:
a- Determination of pka values of some drugs.
b- Determination of partition coefficients and solubilities of drugs.
c- Used to determine the release of drugs from formulations with time.
d- For determination of drugs structural formula.
e- Can be used to monitor the reaction kinetics of drug degredation.
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Corresponding to UV-visible region, select the wavelength range.
a-400-800 nm
b-200-800 nm c- 25 μm-2.5 µm d-2.5 µm -¹ mm e-600-800 nm
2 991
The absorbance of a chromophore was affected by the pH of the medium. Which one of the
following action results in a Bathochromic shift?
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Electromagnetic radiation refers to the waves of the electromagnetic field. Which one of the
following radiations has the maximum wavelength?
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-In the Uv/Vis spectroscopy, transition appears at
a- less than 200 nm
b- less than 300 nm c- less than 400 nm d-less than 100 nm e- less than 50 nm
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In the UV/Vis spectroscopy, 80% transmittance of UV/Vis light means
a- 20% absorption
b-0% absorption c- 120% absorption d-80% absorption e- 10% absorption وزاري
