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Heat & Thermodynamics - Thermometers MCQs

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Heat & Thermodynamics - Thermometers

Heat & Thermodynamics - Thermometers MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
What property is used in a digital resistance thermometer?
A. Electrical resistance changes with temperature
B. Gravity reverses
C. Mass vanishes with temperature
D. Magnetic poles disappear
Correct Answer: A
Resistance temperature detectors infer temperature from predictable resistance changes.
CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
Why is mercury historically useful in thermometers?
A. It has no thermal expansion
B. It freezes at 100°C
C. It is a gas at room temperature
D. It expands fairly uniformly and is easily visible over a useful range
Correct Answer: D
Mercury's predictable expansion made it useful, though safety concerns have reduced its use.
CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
Which SI temperature scale uses kelvin?
A. Beaufort scale
B. Kelvin scale
C. Fahrenheit scale
D. Celsius scale only
Correct Answer: B
Kelvin is the SI base unit of thermodynamic temperature.
CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
What is absolute zero in Celsius approximately?
A. −273.15°C
B. 273.15°C
C. 0°C
D. −100°C
Correct Answer: A
Absolute zero is 0 K, equal to about −273.15°C.
CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
Which temperature scale sets water's freezing point at 0° and boiling point at 100° at standard pressure?
A. Rankine
B. Celsius
C. Fahrenheit
D. Kelvin
Correct Answer: B
The Celsius scale uses 0°C and 100°C for those reference points under standard conditions.
CSS - PMS - CCE - PCS - General Science Heat & Thermodynamics - Thermometers
What does a thermometer measure?
A. Heat energy directly
B. Mass
C. Temperature
D. Pressure only
Correct Answer: C
A thermometer measures temperature using a calibrated physical property.
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