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Total Questions : 151 | Page 6 of 16 pages
Question 51. The gel used in combination electrodes does not have which of the following characteristic?
  1.    Non-toxic
  2.    USP grade
  3.    Inorganic material
  4.    Polyacrylamide
 Discuss Question
Answer: Option C. -> Inorganic material
Answer: (c).Inorganic material
Question 52. Beckman coulter gel filled combination electrodes provide which of the following features to overcome various problems that occur in gel filled electrodes?
  1.    Filters
  2.    Semi-permeable membrane
  3.    Gas-permeable membrane
  4.    Micro-pore junction
 Discuss Question
Answer: Option D. -> Micro-pore junction
Answer: (d).Micro-pore junction
Question 53. In which of the following solutions must combination electrodes be soaked after cleaning?
  1.    KCl
  2.    LiCl
  3.    KNO₃
  4.    K₂SO₄
 Discuss Question
Answer: Option A. -> KCl
Answer: (a).KCl
Question 54. Gel filled combination electrodes operate in a wide temperature range.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 55. In combination electrodes, both the electrodes must be maintained at different temperatures.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 56. Which of the following is the formula for pH calculation?
  1.    log10[H+]
  2.    -log10[H+]
  3.    log2[H+]
  4.    -log2[H+]
 Discuss Question
Answer: Option B. -> -log10[H+]
Answer: (b).-log10[H+]
Question 57. Which of the following is the value of hydroxyl ion concentration of pure water?
  1.    1×10⁷ moles/litre
  2.    1×10⁵ moles/litre
  3.    1×10⁶ moles/litre
  4.    1×10⁸ moles/litre
 Discuss Question
Answer: Option A. -> 1×10⁷ moles/litre
Answer: (a).1×10⁷ moles/litre
Question 58. Pure water is known to be which of the following?
  1.    Weak electrolyte
  2.    Strong electrolyte
  3.    Neither weak nor strong
  4.    Not an electrolyte
 Discuss Question
Answer: Option A. -> Weak electrolyte
Answer: (a).Weak electrolyte
Question 59. Which of the following is the value of hydrogen ion concentration of pure water?
  1.    1×10⁷ moles/litre
  2.    1×10⁵ moles/litre
  3.    1×10⁶ moles/litre
  4.    1×10⁸ moles/litre
 Discuss Question
Answer: Option A. -> 1×10⁷ moles/litre
Answer: (a).1×10⁷ moles/litre
Question 60. Which of the following is the relation between hydrogen and hydroxyl ion concentration of pure water?
  1.    Value of hydrogen ion concentration is greater
  2.    Value of hydroxyl ion concentration is greater
  3.    They are both always the same
  4.    The concentrations keep changing
 Discuss Question
Answer: Option C. -> They are both always the same
Answer: (c).They are both always the same

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