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  • Ph Meters And Ion Analysers

Analytical Instrumentation

PH METERS AND ION ANALYSERS MCQs

Total Questions : 151

Page 1 of 16 pages
Question 1. PH meters can be considered as voltage sources with which of the following internal resistances?
  1.    Very low resistance
  2.    Moderate resistance
  3.    Very high resistance
  4.    No resistance
 Discuss Question
Answer is Option C. -> Very high resistance
Answer: (c).Very high resistance
Question 2. The electrodes used in pH measurement have which of the following internal resistances?
  1.    Very low resistance
  2.    Moderate resistance
  3.    Very high resistance
  4.    No resistance
 Discuss Question
Answer is Option C. -> Very high resistance
Answer: (c).Very high resistance
Question 3. In which of the following ways can zero drift be reduced in pH meters?
  1.    Using filter
  2.    Giving zero adjustment arrangement
  3.    Keeping the input impedance high
  4.    Using balanced and differential amplifiers
 Discuss Question
Answer is Option D. -> Using balanced and differential amplifiers
Answer: (d).Using balanced and differential amplifiers
Question 4. Which of the following is not a failure in pH meters?
  1.    Defective electrodes
  2.    Defective input circuitry
  3.    Defective electronic circuitry
  4.    Defective calibration
 Discuss Question
Answer is Option D. -> Defective calibration
Answer: (d).Defective calibration
Question 5. Which of the following is the simplest of pH meters?
  1.    Null-detector type pH meter
  2.    Direct reading type pH meter
  3.    Digital pH meter
  4.    Modern pH meter
 Discuss Question
Answer is Option A. -> Null-detector type pH meter
Answer: (a).Null-detector type pH meter
Question 6. In solid state membranes, the body of the electrodes are made of which of the following?
  1.    Polyvinyl chloride
  2.    Plastic
  3.    Polythene
  4.    Teflon
 Discuss Question
Answer is Option D. -> Teflon
Answer: (d).Teflon
Question 7. In liquid membrane electrode, the liquid ion exchanger is held in a porous disc of _____________
  1.    Solid material
  2.    Semi-permeable membrane
  3.    Hydrophobic material
  4.    Water absorbing material
 Discuss Question
Answer is Option C. -> Hydrophobic material
Answer: (c).Hydrophobic material
Question 8. Which of the following is used in potassium electrode in liquid membrane electrodes?
  1.    Ionomycin
  2.    Valinomycin
  3.    Nonactin
  4.    Gramicidin
 Discuss Question
Answer is Option B. -> Valinomycin
Answer: (b).Valinomycin
Question 9. In recent liquid membrane electrodes, the porous liquid membrane is replaced with which of the following?
  1.    Polyvinyl chloride
  2.    Polyacryl chloride
  3.    Polyester membrane
  4.    Polyacryl amide
 Discuss Question
Answer is Option A. -> Polyvinyl chloride
Answer: (a).Polyvinyl chloride
Question 10. Which of the following is not the characteristic of ion selective electrodes?
  1.    Simple to use
  2.    Inexpensive
  3.    Narrow concentration range
  4.    Operates in wide range of temperature
 Discuss Question
Answer is Option C. -> Narrow concentration range
Answer: (c).Narrow concentration range
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Sub Topics

  • Chromatography
  • Electron And Ion Spectrometers
  • Industrial Gas Analysers
  • Mass Spectrometer
  • Nuclear Magnetic Resonance Spectrometer
  • Ph Meters And Ion Analysers
  • Pollution Monitoring Instruments
  • Radiochemical Techniques
  • X Ray Spectrometers

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