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Total Questions : 151 | Page 14 of 16 pages
Question 131. An example of biosensor, urea electrode makes use of which of the following electrodes?
  1.    Carbon dioxide electrode
  2.    Ammonia electrode
  3.    Fluoride electrode
  4.    Ammonium electrode
 Discuss Question
Answer: Option D. -> Ammonium electrode
Answer: (d).Ammonium electrode
Question 132. Biosensors measure glucose concentrations between which of the following ranges?
  1.    10⁻¹ to 10⁻² M
  2.    10⁻² to 10⁻⁴ M
  3.    10⁻¹ to 10⁻⁴ M
  4.    10⁻¹ to 10⁻⁷ M
 Discuss Question
Answer: Option D. -> 10⁻¹ to 10⁻⁷ M
Answer: (d).10⁻¹ to 10⁻⁷ M
Question 133. Transducers employed in the bulk of enzyme electrodes use which of the following principles?
  1.    Amperometric
  2.    Optical
  3.    Magnetic
  4.    Colorimetric
 Discuss Question
Answer: Option A. -> Amperometric
Answer: (a).Amperometric
Question 134. In glucose electrode, glucose oxidase has been coupled to an electrode by which of the following materials?
  1.    Ferrocene derivatives
  2.    Urease
  3.    Polyacrylamide
  4.    Biochips
 Discuss Question
Answer: Option A. -> Ferrocene derivatives
Answer: (a).Ferrocene derivatives
Question 135. Which of these biosensors use the principle of heat released or absorbed by a reaction?
  1.    Potentiometric biosensor
  2.    Optical biosensors
  3.    Piezo-electric biosensors
  4.    Calorimetric biosensors
 Discuss Question
Answer: Option D. -> Calorimetric biosensors
Answer: (d).Calorimetric biosensors
Question 136. The water to be analysed flows into the condenser through which of the following components?
  1.    Filter
  2.    Semi-permeable membrane
  3.    Throttling device
  4.    Platinum filament
 Discuss Question
Answer: Option C. -> Throttling device
Answer: (c).Throttling device
Question 137. Which of the following section plays a major role in maintaining the accuracy of the dissolved oxygen analyser?
  1.    Analysing section
  2.    Inlet section
  3.    Transmitting section
  4.    Condensing section
 Discuss Question
Answer: Option C. -> Transmitting section
Answer: (c).Transmitting section
Question 138. Which of the following is the function of the throttling device?
  1.    Filtering
  2.    Maintains pH of a water
  3.    Purifies water
  4.    Maintains constant flow rate
 Discuss Question
Answer: Option D. -> Maintains constant flow rate
Answer: (d).Maintains constant flow rate
Question 139. How does solubility of oxygen in water change with respect to temperature?
  1.    It decreases with increase in temperature
  2.    It increases with increase in temperature
  3.    It decreases with decrease in temperature
  4.    It does not depend on temperature
 Discuss Question
Answer: Option A. -> It decreases with increase in temperature
Answer: (a).It decreases with increase in temperature
Question 140. Which of the following bridges are used in dissolved oxygen analyser?
  1.    Kelvin’s bridge
  2.    Wheatstone bridge
  3.    Schering’s bridge
  4.    Anderson’s bridge
 Discuss Question
Answer: Option B. -> Wheatstone bridge
Answer: (b).Wheatstone bridge

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