Qualitative Analysis of Ions - Numerical Applications

Q. In a titration to identify chloride ions, which indicator is commonly used?
  • A. Phenolphthalein
  • B. Methyl orange
  • C. Silver nitrate
  • D. Chromate
Q. In electrophoresis, what property of ions primarily determines their movement?
  • A. Mass
  • B. Charge
  • C. Size
  • D. Solubility
Q. In UV-Vis spectroscopy, what does a peak at 260 nm typically indicate?
  • A. Presence of proteins
  • B. Presence of nucleic acids
  • C. Presence of carbohydrates
  • D. Presence of lipids
Q. What is the main advantage of using ion chromatography for qualitative analysis?
  • A. High sensitivity
  • B. Ability to analyze gases
  • C. Separation of ions in a single run
  • D. Low cost
Q. What is the primary purpose of using a flame test in qualitative analysis?
  • A. To determine the concentration of ions
  • B. To identify the presence of specific metal ions
  • C. To separate different ions
  • D. To measure the pH of a solution
Q. What is the principle behind the use of chromatography for qualitative analysis?
  • A. Separation based on charge
  • B. Separation based on size
  • C. Separation based on solubility
  • D. Separation based on boiling point
Q. What is the role of a titrant in a titration for qualitative analysis?
  • A. To provide a color change
  • B. To react with the analyte
  • C. To stabilize the solution
  • D. To dilute the sample
Q. What is the significance of using a buffer solution in qualitative analysis?
  • A. To increase the solubility of ions
  • B. To maintain a constant pH
  • C. To enhance the color intensity
  • D. To precipitate unwanted ions
Q. Which analytical technique is best suited for the separation of anions in a mixture?
  • A. Gas chromatography
  • B. High-performance liquid chromatography
  • C. Thin-layer chromatography
  • D. Capillary electrophoresis
Q. Which of the following ions can be detected using a colorimetric method?
  • A. Sodium
  • B. Calcium
  • C. Iron
  • D. Potassium
Q. Which reagent is commonly used to confirm the presence of chloride ions in a solution?
  • A. Barium nitrate
  • B. Silver nitrate
  • C. Calcium hydroxide
  • D. Sodium sulfate
Q. Which technique is best suited for separating anions in a mixture?
  • A. Gas chromatography
  • B. High-performance liquid chromatography
  • C. Capillary electrophoresis
  • D. Mass spectrometry
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