Multiple choice

Consider the following statements:

  1. The sievert (symbol: Sv) is an International System of Units (SI) derived unit of equivalent radiation dose.
  2. Dissolved oxygen (Oxygen saturation), as a water quality parameter is expressed in mg/l.

Which of the above statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. The sievert (symbol: Sv) is the International System of Units (SI) derived unit of equivalent radiation dose, effective dose and committed dose. Quantities that are measured in sieverts are designed to represent the stochastic biological effects of ionizing radiation. The gray and sievert units are both special names for the SI derived units of joules per kilogram (m2/s2 if expressed in base units), though they are not interchangeable. 1. Sv = 1 J/kg = 1 Gy
    1. Dissolved Oxygen (Oxygen saturation): It is a relative measure of the amount of oxygen dissolved in water. Super saturation (excess of oxygen) can be harmful to organisms and also cause decompression sickness. It is expressed in mg/l.

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