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UPSC Exam  >  UPSC Tests  >  Science & Technology for UPSC CSE  >  Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - UPSC MCQ

Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - UPSC MCQ


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10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Heat, Temperature Scales & Thermometers, Thermal Expansion

Test: Heat, Temperature Scales & Thermometers, Thermal Expansion for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Heat, Temperature Scales & Thermometers, Thermal Expansion questions and answers have been prepared according to the UPSC exam syllabus.The Test: Heat, Temperature Scales & Thermometers, Thermal Expansion MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion below.
Solutions of Test: Heat, Temperature Scales & Thermometers, Thermal Expansion questions in English are available as part of our Science & Technology for UPSC CSE for UPSC & Test: Heat, Temperature Scales & Thermometers, Thermal Expansion solutions in Hindi for Science & Technology for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Heat, Temperature Scales & Thermometers, Thermal Expansion | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Science & Technology for UPSC CSE for UPSC Exam | Download free PDF with solutions
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 1
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What is the latent heat of fusion?

Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 1
The latent heat of fusion is the amount of heat required to change a substance from a solid to a liquid state without changing its temperature. This means it's the heat needed to melt a solid.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 2
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What is the difference between heat and temperature?

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Heat is the quantity of thermal energy possessed by a body, while temperature measures the degree of hotness or coldness. In other words, heat is the amount of thermal energy, and temperature is the measurement of that energy's intensity.
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Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 3
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What is the purpose of a bimetal strip in a thermostat?

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A bimetal strip is used in a thermostat to bend when heated or cooled. This bending action is used to control temperature in devices like electrically heated rooms and ovens.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 4
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Which temperature scale assigns 0°C to the melting point of pure ice and 100°C to the boiling point of pure water?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 4
The Celsius scale assigns 0°C to the melting point of pure ice and 100°C to the boiling point of pure water under normal atmospheric pressure.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 5
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Which substance has the lowest linear expansivity?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 5
Invar has the lowest linear expansivity among the listed substances. Linear expansivity refers to how much a material expands when heated.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 6
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At what temperature does water have its minimum volume and maximum density?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 6
Water has its minimum volume and maximum density at 4°C. This unique property of water is important for aquatic life in cold weather.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 7
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What is the SI unit of temperature?
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The SI unit of temperature is the Kelvin (K).
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 8
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Which instrument measures high temperatures using emitted radiation and doesn't need to be in contact with the hot body?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 8
A pyrometer measures high temperatures using emitted radiation and does not need to be in contact with the hot body being measured.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 9
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Why is mercury preferred over alcohol as a thermometric liquid?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 9
Mercury is preferred over alcohol as a thermometric liquid because it is a better conductor of heat than alcohol and responds more rapidly to changes in temperature.
Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 10
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What is the purpose of using a bimetal strip in a thermostat?
Detailed Solution for Test: Heat, Temperature Scales & Thermometers, Thermal Expansion - Question 10
A bimetal strip in a thermostat is used to bend when heated or cooled, which allows it to regulate temperature by controlling electrical circuits in devices like electrically heated rooms and ovens.
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