What is the SI unit of temperature?

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A Kelvin
B Celsius
C Fahrenheit
D All of the above

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Answer: A. Kelvin

The kelvin (K) is the SI unit of temperature. Its scale starts at absolute zero, so 0 degrees Celsius = 273.15 K. Celsius and Fahrenheit are common scales but not SI units.

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What is the SI unit of temperature?

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