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MCQs

Total Questions : 151 | Page 15 of 16 pages
Question 141. The output of the electrode in sodium analyser is proportional to which of the following parameters?
  1.    Activity
  2.    Concentration
  3.    Negative logarithm of sodium ion concentration
  4.    Logarithm of sodium ion concentration
 Discuss Question
Answer: Option D. -> Logarithm of sodium ion concentration
Answer: (d).Logarithm of sodium ion concentration
Question 142. Presence of sodium sulphate in water causes corrosion in boilers.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 143. Cleaning process gives accuracy and long life.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 144. In which part of the apparatus is the reference and ion selective electrodes placed?
  1.    Head tank
  2.    Flow cell
  3.    Reservoir
  4.    Solenoid valve
 Discuss Question
Answer: Option B. -> Flow cell
Answer: (b).Flow cell
Question 145. Which of the following principles are used in silica analyser?
  1.    Amperometric principle
  2.    Colorimetric principle
  3.    Coulometric principle
  4.    Magnetic principle
 Discuss Question
Answer: Option B. -> Colorimetric principle
Answer: (b).Colorimetric principle
Question 146. Given below is the diagram of biosensor. Identify the unmarked component.Given Below Is The Diagram Of Biosensor. Identify The Unmark...
  1.    Microprocessor
  2.    Filter
  3.    Transducer
  4.    A/D converter
 Discuss Question
Answer: Option C. -> Transducer
Answer: (c).Transducer
Question 147. Which of the following reference electrodes are used as internal and external reference electrodes in combination electrodes?
  1.    Silver/silver chloride electrode
  2.    Calomel electrode
  3.    Mercury/mercury sulphate electrode
  4.    Mercury/mercury chloride electrode
 Discuss Question
Answer: Option A. -> Silver/silver chloride electrode
Answer: (a).Silver/silver chloride electrode
Question 148. Combination electrodes containing the electrolyte in gel format have which of the following advantages over normal ones?
  1.    Simple to use
  2.    Low maintenance
  3.    Low cost
  4.    More accurate
 Discuss Question
Answer: Option B. -> Low maintenance
Answer: (b).Low maintenance
Question 149. Which of the following is not the advantage of gel-filled electrodes?
  1.    Low maintenance
  2.    Rugged in construction
  3.    Easy to maintain
  4.    Does not cause clogging
 Discuss Question
Answer: Option D. -> Does not cause clogging
Answer: (d).Does not cause clogging
Question 150. The reference electrodes in combination electrodes are protected against light using which of the following?
  1.    Emerald green glass
  2.    Ruby red glass
  3.    Sapphire blue glass
  4.    Pearl white glass
 Discuss Question
Answer: Option B. -> Ruby red glass
Answer: (b).Ruby red glass

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