Q:

The millimetre of mercury is a unit commonly used for the measurement of blood pressure. Which of the following statements about this unit is true

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The millimetre of mercury is a unit commonly used for the measurement of

blood pressure. Which of the following statements about this unit is true?


  1. It is part of the Australian Metric System but not part of the SI system.
  2. It is part of the SI system but not part of the Australian Metric System.
  3. It belongs to both the SI system and the Australian Metric System.
  4. It does not belong to either the SI system or the Australian Metric System.

All Answers

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D: both the SI system and the Australian Metric System are “metric”,

the mmHg is not (despite having millimetre in its name).

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