Temperature Measurement & Scales
1 / 10
What is 300 K in Celsius?
Explanation: To convert Kelvin to Celsius, subtract 273.15. So, 300 K = 300 – 273.15 ≈ 27°C.
2 / 10
Which device relies on thermal equilibrium to measure temperature?
Explanation: A thermometer measures temperature by reaching thermal equilibrium with the system, per the Zeroth Law.
3 / 10
If a system’s temperature is 25°C, what is it in Fahrenheit?
Explanation: Convert °C to °F: °F = (°C × 9/5) + 32. So, 25°C = (25 × 9/5) + 32 = 45 + 32 = 77°F.
4 / 10
 Which scale is used for absolute temperature in thermodynamics?
Explanation: Kelvin is the absolute temperature scale, with no negative values, ideal for thermodynamic calculations.
5 / 10
Absolute zero on the Celsius scale is:
Explanation: Absolute zero, where molecular motion theoretically stops, is -273.15°C, equivalent to 0 K
6 / 10
 What is the freezing point of water on the Fahrenheit scale?
Explanation: On the Fahrenheit scale, water freezes at 32°F under standard conditions.
7 / 10
Convert 0°C to Kelvin:
Explanation: To convert Celsius to Kelvin, add 273.15. So, 0°C = 0 + 273.15 = 273.15 K.
8 / 10
At what temperature does water freeze on the Celsius scale?
Explanation: On the Celsius scale, water freezes at 0°C under standard atmospheric pressure.
9 / 10
A thermometer measures temperature based on:
Explanation: Thermometers reach thermal equilibrium with a system, as per the Zeroth Law, to measure its temperature
10 / 10
 What is the SI unit for temperature in thermodynamics?
Explanation: Kelvin (K) is the SI unit for temperature, used in thermodynamics, starting at absolute zero (0 K = -273.15°C).
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