Analytical Chemistry MCQs for MDCAT Practice

Chemistry section, Analytical Chemistry chapter. Sample questions from past PMC papers.

1. Question 1
   An infrared spectrum shows an absorption band in the range of 1680-1750 cm−1 and produces a very broad trough in the range of 2500-3300 cm−1. Which of the following sets of groups is indicated by these two ranges?
   • A.Option A
   • B.Option B
   • C.Option C
   • D.Option D
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2. Question 2
   Which of the following methods is used to separate small molecules from larger molecules by diffusion through a membrane?
   • A.Dialysis
   • B.Chromatography
   • C.HPLC
   • D.FPLC
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3. Question 3
   Which of the following methods, relatively gives more information about the structure of an organic compound:
   • A.Mass Spectroscopy
   • B.NMR Spectroscopy
   • C.IR Spectroscopy
   • D.U.V Visible Spectroscopy
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4. Question 4
   The given test tube contains the following reagents.Original salt solution + NH4Cl (s) + NH4OH(aq) + (NH4 )2CO3(s)If precipitation does NOT occur, then the next reagent that should be added to this reaction mixture is
   • A.H2S(g)
   • B.HCl (aq)
   • C.NaOH(aq)
   • D.(NH4)2HPO4(s)
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5. Question 5
   Which of the following allows charge transfer through the solution but prevents mixing of the solution?
   • A.Anode
   • B.Cathode
   • C.Salt bridge
   • D.Electrode cell
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6. Question 6
   White sodium salt dissolves readily in water to give a solution which is neutral to litmus test. When silver nitrate solution is added to the aforementioned solution, a white precipitate is obtained which does not dissolve in dilute nitric acid. The anion can be:
   • A.CO32-
   • B.SO42-
   • C.Cl-
   • D.S2-
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7. Question 7
   The sample characteristics affecting the weight loss curve include
   • A.Amount of sample
   • B.Solubility of evolved gases in the sample
   • C.Sample particle size
   • D.All above
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8. Question 8
   Temperatures up to about __oC can be reached with muffle furnaces?
   • A.300
   • B.800
   • C.1000
   • D.1200
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