Class 11 Physics Chapter 11 Thermal Properties of Matter MCQ
Thermal Properties of Matter is one of the most important chapters in Class 11 Physics. This chapter explains concepts such as temperature, heat transfer, thermal expansion, specific heat capacity, calorimetry, and thermal conductivity. Students preparing for school examinations, board exams, NEET, JEE, and other competitive examinations should practice MCQs from this chapter regularly.
In this article, we have provided important Class 11 Physics MCQ Chapter 11 Thermal Properties of Matter with answers for effective exam preparation.
Part II
Class 11 Physics MCQ Chapter 11 Thermal Properties of Matter
VSA & MCQs
I. Very Short Answer (VSA) Questions with Answers
Q. What is temperature?
Ans: Temperature is the measure of the degree of hotness or coldness of a body.
Q. What is heat?
Ans: Heat is a form of energy transferred due to a temperature difference.
Q. What is the SI unit of heat?
Ans: Joule (J).
Q. What is thermal expansion?
Ans: Increase in dimensions of a body due to a rise in temperature.
Q. What is linear expansion?
Ans: Increase in length of a solid due to heating.
Q. What is superficial expansion?
Ans: Increase in the area of a body due to a rise in temperature.
Q. What is cubical expansion?
Ans: Increase in the volume of a body due to heating.
Q. What is the coefficient of linear expansion?
Ans: Increase in unit length per degree rise in temperature.
Q. What is thermal conductivity?
Ans: The property of a material to conduct heat.
Q. Which material is a good conductor of heat?
Ans: Copper.
Q. Which material is a poor conductor of heat?
Ans: Wood.
Q. What is conduction?
Ans: Transfer of heat without movement of particles.
Q. What is convection?
Ans: Transfer of heat by actual movement of fluid particles.
Q. What is radiation?
Ans: Transfer of heat in the form of electromagnetic waves.
Q. Which mode of heat transfer does not require a medium?
Ans: Radiation.
Q. What is latent heat?
Ans: Heat absorbed or released during a change of state without temperature change.
Q. What is melting point?
Ans: The temperature at which a solid changes into a liquid.
Q. What is the boiling point?
Ans: The temperature at which a liquid changes into vapour.
Q. What is calorimetry?
Ans: Measurement of heat exchanged in physical processes.
Q. State Newton’s law of cooling.
Ans: The rate of cooling is proportional to the temperature difference between the body and its surroundings.
Multiple Choice Questions (MCQs)
Q. The SI unit of heat is:
(a) Calorie
(b) Joule
(c) Watt
(d) Pascal
Ans: (b) Joule
Q. Heat is a form of:
(a) Matter
(b) Force
(c) Energy
(d) Pressure
Ans: (c) Energy
Q. The SI unit of temperature is:
(a) Celsius
(b) Fahrenheit
(c) Kelvin
(d) Joule
Ans: (c) Kelvin
Q. Which mode of heat transfer occurs in a vacuum?
(a) Conduction
(b) Convection
(c) Radiation
(d) Expansion
Ans: (c) Radiation
Q. Which metal is a good conductor of heat?
(a) Wood
(b) Glass
(c) Copper
(d) Plastic
Ans: (c) Copper
Q. Thermal expansion in solids is maximum in:
(a) Length
(b) Area
(c) Volume
(d) None
Ans: (c) Volume
Q. The formula (Q=mc\Delta T) is related to:
(a) Pressure
(b) Heat energy
(c) Density
(d) Work done
Ans: (b) Heat energy
Q. Transfer of heat through liquids mainly occurs by:
(a) Conduction
(b) Radiation
(c) Convection
(d) Reflection
Ans: (c) Convection
Q. Which of the following expands most on heating?
(a) Solid
(b) Liquid
(c) Gas
(d) Metal
Ans: (c) Gas
Q. The temperature of a body remains constant during:
(a) Heating of solid
(b) Melting
(c) Cooling
(d) Expansion
Ans: (b) Melting
Q. The heat required to change liquid into vapour is called:
(a) Specific heat
(b) Latent heat of fusion
(c) Latent heat of vaporisation
(d) Thermal energy
Ans: (c) Latent heat of vaporisation
Q. Which thermometer is used for clinical purposes?
(a) Mercury thermometer
(b) Clinical thermometer
(c) Laboratory thermometer
(d) Gas thermometer
Ans: (b) Clinical thermometer
Q. Sea breeze occurs due to:
(a) Conduction
(b) Radiation
(c) Convection
(d) Reflection
Ans: (c) Convection
Q. Which colour is the best absorber of heat radiation?
(a) White
(b) Red
(c) Black
(d) Yellow
Ans: (c) Black
Q. Conduction mainly occurs in:
(a) Solids
(b) Liquids
(c) Gases
(d) Vacuum
Ans: (a) Solids
Q. Which quantity determines the heat required to raise the temperature?
(a) Mass only
(b) Specific heat only
(c) Temperature change only
(d) All of these
Ans: (d) All of these
Q. The SI unit of latent heat is:
(a) J/kg
(b) Joule
(c) Watt
(d) Pascal
Ans: (a) J/kg
Q. Which of the following is a poor conductor of heat?
(a) Copper
(b) Aluminium
(c) Iron
(d) Wood
Ans: (d) Wood
Q. The tendency of heat to flow is from:
(a) Cold body to hot body
(b) Hot body to cold body
(c) Lower density to higher density
(d) Vacuum to matter
Ans: (b) Hot body to cold body
Q. What happens to the density of most substances on heating?
(a) Increases
(b) Decreases
(c) Remains the same
(d) Becomes zero
Ans: (b) Decreases
Q. Which temperature scale has no negative values?
(a) Celsius
(b) Fahrenheit
(c) Kelvin
(d) Centigrade
Ans: (c) Kelvin
Q. Thermal conductivity is highest in:
(a) Metals
(b) Liquids
(c) Gases
(d) Wood
Ans: (a) Metals
Q. The process of heat transfer without a medium is:
(a) Conduction
(b) Convection
(c) Radiation
(d) Evaporation
Ans: (c) Radiation
Q. Which phenomenon explains the land breeze?
(a) Radiation
(b) Conduction
(c) Convection
(d) Reflection
Ans: (c) Convection
Q. During boiling, the temperature of the liquid:
(a) Increases
(b) Decreases
(c) Remains constant
(d) Becomes zero
Ans: (c) Remains constant
Q. Assertion (A): Radiation does not require any material medium.
Reason (R): Heat is transferred through electromagnetic waves.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Ans: (a) Both A and R are true and R is the correct explanation of A.
Q. Assertion (A): Metals are good conductors of heat.
Reason (R): Metals contain free electrons that transfer heat energy.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Ans: (a) Both A and R are true and R is the correct explanation of A.
Q. Assertion (A): Black surfaces absorb heat radiation better.
Reason (R): Black surfaces are good absorbers of radiation.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false, but R is true.
Ans: (a) Both A and R are true, and R is the correct explanation of A.
Q. Assertion (A): Temperature remains constant during melting.
Reason (R): The heat supplied is used as latent heat.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Ans: (a) Both A and R are true and R is the correct explanation of A.
Q. Assertion (A): Sea breeze occurs during daytime.
Reason (R): Land gets heated faster than sea during day.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Ans: (a) Both A and R are true and R is the correct explanation of A.
Q. Assertion (A): Specific heat capacity of water is high.
Reason (R): Water requires more heat to raise its temperature.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Ans: (a) Both A and R are true and R is the correct explanation of A.
Important Topics from Thermal Properties of Matter
Students should focus on the following topics:
Temperature and Heat
Thermal Expansion
Coefficient of Linear Expansion
Area and Volume Expansion
Calorimetry
Specific Heat Capacity
Heat Transfer
Conduction
Convection
Radiation
Stefan’s Law
Newton’s Law of Cooling
Thermal Conductivity
Anomalous Expansion of Water
Exam Preparation Tips
Learn all important formulas thoroughly.
Practice previous year MCQs regularly.
Understand the concepts of heat transfer and calorimetry.
Revise thermal expansion formulas frequently.
Solve numerical problems along with objective questions.
Conclusion
Class 11 Physics Chapter 11 Thermal Properties of Matter is an important chapter for board exams and competitive examinations. Practicing MCQs regularly helps students improve conceptual understanding and score higher marks. The questions provided above cover the most important concepts of the chapter and are useful for quick revision before examinations.
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