This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Substances with high thermal conductivities transfer thermal energy ..... substances that have low thermal conductivities. A) Into. B) Slower than. C) Faster than. D) At the same speed as. Show Answer Correct Answer: C) Faster than. 2. When there is presence of moving air, the rate of evaporation decreases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. The temperature of a liquid drops during evaporation because A) Heat is conducted away to the environment. B) Heat is radiated away to the environment. C) The molecules with more energy escape into the environment as vapour, causing the average kinetic energy of the liquid molecules to drop. D) Of the temperature difference between the liquid and the environment. Show Answer Correct Answer: C) The molecules with more energy escape into the environment as vapour, causing the average kinetic energy of the liquid molecules to drop. 4. Evaporation is ..... A) A process which liquid turns into a gas at a temperature. B) A process which liquid turns into a gas at any temperature. C) All the above. D) None of the above. Show Answer Correct Answer: B) A process which liquid turns into a gas at any temperature. 5. PROCESS OF SUBLIMATION A) GAS TO LIQUID. B) VAPOUR/GAS TO SOLID. C) LIQUID TO GAS. D) GAS TO GAS. Show Answer Correct Answer: B) VAPOUR/GAS TO SOLID. 6. Bob wants to melt an object.The object with a mass of 2 kg was initially at 20$^\circ$C and has a melting point of 56$^\circ$C.Given that the object has a specific heat capacity of 400 J/kg$^\circ$C and a specific latent heat of fusion of 2.4 kJ/kg, how much energy does Bob need to completely melt the object? A) 4800 J. B) 28800 J. C) 33600 J. D) 49600 J. Show Answer Correct Answer: C) 33600 J. 7. During melting, temperature A) Increases. B) Decreases. C) Remains the same. D) May increase or decrease. Show Answer Correct Answer: C) Remains the same. 8. The reading of a Fahrenheit thermometer will be double that of a Celsius reading at A) 320$^\circ$C. B) 160$^\circ$C. C) -40$^\circ$C. D) 0$^\circ$C. Show Answer Correct Answer: B) 160$^\circ$C. 9. If a metal rod is heated, which of the following statements is true? A) The rod contracts as its molecules lose kinetic energy. B) The rod remains the same length due to its strong molecular bonds. C) The rod expands due to increased molecular motion. D) The rod loses heat and its temperature decreases. Show Answer Correct Answer: C) The rod expands due to increased molecular motion. 10. The bulb of a thermometer is wrapped in a tube of cotton fabric. The fabric is dipped into water at room temperature and left for some time. The thermometer wrapped in wet fabric is then removed and evaporation takes place. What happens to the thermometer reading? A) It falls. B) It remains unchanged. C) It rises. D) It rises and then falls. Show Answer Correct Answer: A) It falls. 11. Bob wants to heat up his cup of water from 20$^\circ$C to 45$^\circ$C.Given that the mass of his water is 400 g and the specific heat capacity is 4.2 kJ/kg$^\circ$C, how much thermal energy does Bob need to accomplish his task? A) 33 600 J. B) 42 000 J. C) 420 000 J. D) 42 000 000 J. Show Answer Correct Answer: B) 42 000 J. 12. Fill in the blank:To convert Celsius to Kelvin, use the formula K = C + ..... A) 100. B) 273. C) 373. D) 0. Show Answer Correct Answer: B) 273. 13. Boiling point is ..... A) The temperature where solid changes to liquid without a change in temperature. B) The temperature where liquid changes to gas with a change in temperature. C) The temperature where liquid changes to gas without a change in temperatur. D) The temperature where solid changes to liquid with a change in temperature. Show Answer Correct Answer: C) The temperature where liquid changes to gas without a change in temperatur. 14. A block of iron and a volume of water both with a mass of 2.0 kg are heated to the same temperature and then allowed to cool in a room. Why does the iron cool more quickly than the water? A) Iron has a higher specific heat capacity than water. B) Iron has a lower specific heat capacity than water. C) Iron has a higher specific latent heat of fusion than water. D) Iron has a lower specific latent heat of fusion than water. Show Answer Correct Answer: B) Iron has a lower specific heat capacity than water. 15. Which of the following is the application of Regelation? A) Thermal Stress. B) Pressure Cooker. C) Snow Skating. D) None of the above. Show Answer Correct Answer: C) Snow Skating. 16. A thermal insulator is a substance that A) Can hold a lot of thermal energy. B) Cannot transfer energy. C) Cannot hold any thermal energy. D) Has a low thermal conducitivity. Show Answer Correct Answer: D) Has a low thermal conducitivity. 17. Define latent heat and its importance in phase changes. A) Latent heat is essential for understanding energy transfer during phase changes, influencing weather patterns, and designing thermal systems. B) Latent heat is a measure of temperature change during phase transitions. C) Latent heat is irrelevant to phase changes and energy transfer. D) Latent heat only affects solid materials and not liquids or gases. Show Answer Correct Answer: A) Latent heat is essential for understanding energy transfer during phase changes, influencing weather patterns, and designing thermal systems. 18. A 500W heater is placed in a boiling liquid. It takes 10 minutes for 360g of the liquid to turn into a gas. All the thermal energy supplied by the heater is used to convert the liquid into gas. What is the specific latent heat of vaporisation of the liquid? A) 1.4 x 10$^{1}$ J/kg. B) 8.3 x 10$^{2}$ J/kg. C) 1.4 x 10$^{4}$ J/kg. D) 8.3 x 10$^{5}$ J/kg. Show Answer Correct Answer: D) 8.3 x 10$^{5}$ J/kg. 19. During evaporation, thermal energy is absorbed from the surrounding, and the temperature usually ..... A) Decreases. B) Remains constant. C) Increases. D) None of the above. Show Answer Correct Answer: A) Decreases. 20. The process in which the water changes from liquid to gas or vapor form is known as ..... A) Melting point. B) Evaporation. C) Latent heat of vaporization. D) Latent heat of fusion. Show Answer Correct Answer: B) Evaporation. 21. Thermal or Internal energy is consist of Internal kinetic energy and internal potential energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. Condensation is the process whereby a substance changes from ..... A) Gas to liquid. B) Liquid to gas. C) Solid to liquid. D) Liquid to solid. Show Answer Correct Answer: A) Gas to liquid. 23. When you are having fever, why does your mother sponge you with water? A) When the water evaporates it will remove heat from the surface of the skin. B) Water will help to heat up the body. C) Water will boil on the surface of the skin. D) Water is a good conductor of heat. Show Answer Correct Answer: A) When the water evaporates it will remove heat from the surface of the skin. 24. Which of the following terms refers to the change in state from a liquid to solid? A) Melting. B) Condensation. C) Boiling. D) Freezing. Show Answer Correct Answer: D) Freezing. 25. Which statements describe what happens as ice at 0 degree celcius starts to melt to become water? A) Energy is absorbed and the temperature remains constant. B) Energy is absorbed and the temperature rises. C) Energy is released and the temperature remains constant. D) Energy is released and the temperature rises. Show Answer Correct Answer: A) Energy is absorbed and the temperature remains constant. ← PreviousNext →Related QuizzesClass 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 1Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 2Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 3Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 4Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 5Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 6Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 8Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 9Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 10Class 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books