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MCQs

Total Questions : 151 | Page 4 of 16 pages
Question 31. In dissolved oxygen analyser, the electrometer consists of which of the following solutions?
  1.    Calcium hydroxide solution
  2.    Magnesium hydroxide solution
  3.    Potassium hydroxide solution
  4.    Calcium oxide solution
 Discuss Question
Answer: Option C. -> Potassium hydroxide solution
Answer: (c).Potassium hydroxide solution
Question 32. Oxygen content can be controlled by adding which of the following materials with water?
  1.    Acidic solution
  2.    Basic solution
  3.    Iodine
  4.    Hydrazine
 Discuss Question
Answer: Option D. -> Hydrazine
Answer: (d).Hydrazine
Question 33. The dissolved oxygen analyser is based on which of the following meters?
  1.    Amperometer
  2.    Katharometer
  3.    pH meter
  4.    Voltmeter
 Discuss Question
Answer: Option B. -> Katharometer
Answer: (b).Katharometer
Question 34. Which of the following indicate leakages in a condenser?
  1.    The concentration of sodium in steam and condensate are very high
  2.    The concentration of sodium in steam and condensate are very low
  3.    The concentration of sodium in steam and condensate are equal
  4.    The concentration of sodium in steam and condensate are not equal
 Discuss Question
Answer: Option D. -> The concentration of sodium in steam and condensate are not equal
Answer: (d).The concentration of sodium in steam and condensate are not equal
Question 35. In dissolved oxygen analyser, normally more than one condenser is used.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 36. Which of the following are added for pH adjustment in sodium analyser?
  1.    Acidic solution
  2.    Basic solution
  3.    Hydrazine
  4.    Ammonia buffer
 Discuss Question
Answer: Option D. -> Ammonia buffer
Answer: (d).Ammonia buffer
Question 37. Normally, electrodes measure which of the following parameters?
  1.    Activity
  2.    Activity co-efficient
  3.    Blank constant
  4.    Ionic co-efficient
 Discuss Question
Answer: Option A. -> Activity
Answer: (a).Activity
Question 38. Which of the following represent the concentration of a solution?
  1.    Only free ions
  2.    Only bound ions
  3.    Free ions and bound ions
  4.    Either free ions or bound ions
 Discuss Question
Answer: Option C. -> Free ions and bound ions
Answer: (c).Free ions and bound ions
Question 39. Which of the following are used to free bound ions or liberate bound ions?
  1.    Colouring agents
  2.    Ammonia Buffer
  3.    Reagents
  4.    Iodine solution
 Discuss Question
Answer: Option C. -> Reagents
Answer: (c).Reagents
Question 40. Sodium selective electrode provides a good response in measurement when the pH is above which of the following values?
  1.    2
  2.    3
  3.    5
  4.    10
 Discuss Question
Answer: Option D. -> 10
Answer: (d).10

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