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      Question

      The time required to kill 90% of the microorganisms in

      a sample at a specific temperature is the a)       thermal death point b)      F value c)       D value d)      Z value
      A Only A is correct Correct Answer Incorrect Answer
      B Only B is correct Correct Answer Incorrect Answer
      C Only C is correct Correct Answer Incorrect Answer
      D A and B are correct Correct Answer Incorrect Answer
      E C and D are correct Correct Answer Incorrect Answer

      Solution

      Explanation: The D -value  refers to time taken at a given temperature to reduce the population of exposed microorganisms by 90% or achieve a 1-log reduction.

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