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MCQs

Total Questions : 212 | Page 9 of 22 pages
Question 81. Plate count of bacteria in foods generally use the plating medium consisting of
  1.    peptone, yeast extract, glucose, sodium chloride, agar and distilled water
  2.    yeast extract, glucose, sodium chloride, agar and distilled water
  3.    peptone, glucose, sodium chloride, agar and distilled water
  4.    peptone, yeast extract, glucose, sodium chloride and distilled water
 Discuss Question
Answer: Option A. -> peptone, yeast extract, glucose, sodium chloride, agar and distilled water
Answer: (a).peptone, yeast extract, glucose, sodium chloride, agar and distilled water
Question 82. The time temperature combination for HTST paterurization of 71.1°C for 15 sec is selected on the basis of
  1.    Coxiella Burnetii
  2.    E. coli
  3.    B. subtilis
  4.    C. botulinum
 Discuss Question
Answer: Option A. -> Coxiella Burnetii
Answer: (a).Coxiella Burnetii
Question 83. Yeast and mould count determination requires-
  1.    nutrient agar
  2.    acidified potato glucose agar
  3.    MacConkey agar
  4.    violet Red Bile agar
 Discuss Question
Answer: Option B. -> acidified potato glucose agar
Answer: (b).acidified potato glucose agar
Question 84. Aerobic Colony Count (ACC), is also known as
  1.    Total viable count (TVC)
  2.    Aerobic plate count (APC)
  3.    Standard plate count (SPC)
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 85. What are the intrinsic factors for the microbial growth?
  1.    pH
  2.    Moisture
  3.    Oxidation-Reduction Potential
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 86. Which of the following is true about ISO 2002 method for Salmonella detection?
  1.    Selenite cystine (SC) broth is replaced by Muller Kauffmann tetrathionate novobiocin broth (MKTTn)
  2.    Rappaport Vassiliadis (RV) broth has been replaced by Rappaport Vassiliadis Soya (RVS) broth
  3.    XLD is the first isolation medium rather than BGA
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 87. Suspected colonies of Staphylococcus aureus when grown on Baird-Parker medium shall show
  1.    coagulase activity
  2.    protease activity
  3.    catalase activity
  4.    none of these
 Discuss Question
Answer: Option A. -> coagulase activity
Answer: (a).coagulase activity
Question 88. NaCl can act as
  1.    antagonist at optimal concentrations
  2.    synergistically if added in excess of optimum level
  3.    Both (a) and (b)
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Answer: (c).Both (a) and (b)
Question 89. An excessively high temperature in the fermentation of sauerkraut may inhibit the growth of
  1.    Leuconostoc
  2.    Pediococcus cerevisiae
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> Leuconostoc
Answer: (a).Leuconostoc
Question 90. A psychrophilic halophile would be a microbe that prefers
  1.    cold temperatures and increased amounts of salt
  2.    warm temperatures and increased amounts of pressure
  3.    cold temperatures and the absence of oxygen
  4.    warm temperatures and increased amounts of acid
 Discuss Question
Answer: Option A. -> cold temperatures and increased amounts of salt
Answer: (a).cold temperatures and increased amounts of salt

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