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MCQs

Total Questions : 151 | Page 12 of 16 pages
Question 111. Which of the following causes main interference in Fluoride electrode?
  1.    H⁺ ions
  2.    OH⁻ ions
  3.    Li⁺ ions
  4.    Cl⁻ ions
 Discuss Question
Answer: Option B. -> OH⁻ ions
Answer: (b).OH⁻ ions
Question 112. Crystal membrane of ion selective electrode can be regenerated by washing with which of the following?
  1.    Alcohol
  2.    Iodine solution
  3.    Acidic solution
  4.    Basic solution
 Discuss Question
Answer: Option A. -> Alcohol
Answer: (a).Alcohol
Question 113. For fluoride electrode, the electrode response curve will not only shift but will change slope with changes in temperature.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 114. Which of the following gas permeable membrane is used for ammonia gas sensing electrode?
  1.    Silicon rubber
  2.    Microporous Teflon membrane
  3.    Fluorocarbon
  4.    Polythene
 Discuss Question
Answer: Option C. -> Fluorocarbon
Answer: (c).Fluorocarbon
Question 115. Which of the following gas permeable membrane is used for carbon dioxide gas sensing electrode?
  1.    Silicon rubber
  2.    PVC membrane
  3.    Fluorocarbon
  4.    Polythene
 Discuss Question
Answer: Option A. -> Silicon rubber
Answer: (a).Silicon rubber
Question 116. The response time of the biocatalytic membrane electrode is poor when used with complex organic molecules.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 117. Biocatalytic membrane electrode cannot be used for the measurement of which of the following gases?
  1.    Ammonia
  2.    Carbon dioxide
  3.    Hydrogen
  4.    Nitrogen
 Discuss Question
Answer: Option D. -> Nitrogen
Answer: (d).Nitrogen
Question 118. Which of the following materials are used as a gel to which biocatalytic membrane is fixed in ammonia selective electrode?
  1.    Urea
  2.    Urease
  3.    Acrylamide
  4.    Polyacrylamide
 Discuss Question
Answer: Option C. -> Acrylamide
Answer: (c).Acrylamide
Question 119. The biocatalytic membrane used in the ammonia selective electrode is which of the following?
  1.    Urea
  2.    Urease
  3.    Acrylamide
  4.    Polyacrylamide
 Discuss Question
Answer: Option B. -> Urease
Answer: (b).Urease
Question 120. Which of the following reference electrode is placed in the solution of carbon dioxide electrode?
  1.    Calomel electrode
  2.    Silver/silver chloride electrode
  3.    Mercury/mercury sulphate electrode
  4.    Glass electrode
 Discuss Question
Answer: Option B. -> Silver/silver chloride electrode
Answer: (b).Silver/silver chloride electrode

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