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| Physics 9th Chapter 8 Thermal Properties of Matter Questions Bank |
Physics 9th Chapter 8 Thermal Properties of Matter Questions Bank MCQs
Choose the right answer
1. 385.0 Jkg⁻¹K⁻¹ is the specific heat capacity of:
2. 4200 Jkg⁻¹K⁻¹ is the specific heat capacity of:
3. Boiling point of water in Fahrenheit is
4. Cause of land and sea breeze is:
5. Celsius equivalent of 0K is
6. Climate of regions near sea shore remains moderate due to:
7. Crocus flower opens at:
8. Fahrenheit equivalent of 0K is:
9. Heat is a type of:
10. Human normal body temperature of 37 ᵒC in Fahrenheit is
11. Ice is a (an):
12. Linear expansion depends on:
13. Linear expansion of a rod occur along dimension (s):
14. Liquid expansion is if
15. Quantity of heat that changes one kilogram of a of solid into liquid is called:
16. SI unit of Coefficient of linear &\quad volume expansion is
17. Specific heat of water is:
18. ß =
19. Temperature is the:
20. Temperature of 30 ᵒC in Fahrenheit is
21. The characteristic of unequal expansion of different metals is employed in a device known as:
22. The device used to measure of the specific heat of an object is:
23. The kinetic energy of molecules of an object depends on
24. The liquid (s) used in thermometers is (are):
25. The quantity of heat that causes 1K change in temperature in a substance of mass 1 Kg is called
26. The SI unit of temperature is:
27. The specific heat of alcohol is:
28. The specific heat of Aluminum is:
29. The specific heat of Bricks is:
30. The specific heat of Carbon is:
31. The specific heat of Clay is:
32. The specific heat of Copper is:
33. The specific heat of Ether is:
34. The specific heat of Glass is:
35. The specific heat of Gold is:
36. The specific heat of Granite is:
37. The specific heat of Ice is:
38. The specific heat of Iron is:
39. The specific heat of Lead is:
40. The specific heat of Mercury is:
41. The specific heat of Sand is:
42. The specific heat of Silver is:
43. The specific heat of Soil (dry) is:
44. The specific heat of Steam is:
45. The specific heat of Tungsten is:
46. The specific heat of Turpentine is:
47. The temperature in the Sun’s core is:
48. The temperature in the Sun’s surface is:
49. The temperature of ice in freezer is
50. The temperature of liquid oxygen is:
51. The temperature of normal human body is
52. The temperature of the boiling water is:
53. The temperature of the electric lamp is:
54. The temperature of the freezing water is:
55. The temperature of the gas lamp is:
56. Thermostat is used in:
57. Thermostat works on the principle of:
58. Unit of specific heat is:
59. Volume expansion depends on:
60. Which flower is a natural thermometer?
61. Which of the following has highest specific heat?
62. Which of the following substances have greater average kinetic energy of its molecules at 10ᵒC?
Short Questions
1. Define and explain the latent heat of fusion.
2. Define coefficient of linear thermal expansion. Write its formula and unit.
3. Define heat capacity. Write its formula and unit.
4. Define heat. Write its unit.
5. Define latent heat of vaporization.
6. Define linear thermal expansion. On which factors does it depend?
7. Define specific heat capacity. Write its formula and unit.
8. Define temperature and write its unit.
9. Define the fusion point and freezing point?
10. Define the latent heat of vaporization.
11. Define the terms heat and temperature.
12. Define the terms of energy in transit and internal energy.
13. Define the terms of thermal conduct and thermal equilibrium.
14. Define thermal expansion.
15. Define Volume thermal expansion. On which factors does it depend?
16. Derive the relation for volume thermal expansion in solids.
17. Describe the feature of mercury-in-glass thermometer
18. Describe the feature of the liquid-in-glass thermometer
19. Differentiate between temperature and heat?
20. Differentiate between the real and apparent expansion of liquid?
21. Every thermometer makes use of some property of a material that varies with temperature. Name the property used in:
22. Explain that the bimetallic strip used in the thermostat is based on the different rate of expansion of different metals on heating.
23. Explain the thermal expansion of liquids
24. Explain the volumetric thermal expansion.
25. Give coefficient of linear thermal expansion of some common solids.
26. Give the values of β for different substances?
27. Give two uses of cooling effect by evaporation.
28. Highlight the different scale of temperature from one scale to another (Fahrenheit, Celsius and Kelvin scales)
29. How can you convert the temperature from one scale to another (Fahrenheit, Celsius and Kelvin Scales?)
30. How does heating affect the motion of molecules of a gas?
31. How evaporation differs from vaporization?
32. How specific heat differs from heat capacity?
33. List the application of thermal expansion?
34. Show that V = (1+ β Δ T)?
35. What do you mean by lower and upper fixed points in a thermometer?
36. What is a thermometer? Why mercury is preferred as a thermometric substance?
37. What is meant by the internal energy of a body?
38. What is the thermometer? Why mercury is preferred as a thermometric substance?
39. Why does heat flow from hot body to cold body?
40. Why gaps are left in railway tracks?
41. Why gaps are left in the bridge with rollers?
42. Why overhead transmission lines (wires on electric poles) are also given a certain amount of sag?
43. Why the coefficient of volume expansion of liquids is greater than solids?
Long Questions
1. Explain the volumetric thermal expansion.
2. Define specific heat. How would you find the specific heat of a solid?
3. Define and explain the latent heat of fusion.
4. What is meant by evaporation? On what factors the evaporation of liquid depends? Explain how cooling is produced by evaporation.
5. Define specific heat. How would you find the specific heat of a solid?
6. Describe the Importance of large specific heat capacity of water
7. Define heat capacity. How would you find the heat capacity of a solid?
8. Describe an activity to determine the change of state of ice into water and steam by sketching graph.
9. Find the latent heat of fusion of ice with the help of the experiment.
10. Describe experiments to determine the heat of fusion and latent heat of fusion of ice by sketching temperature-time graph on heating ice.
11. List the value of melting point, boiling point, latent heat of fusion and vaporization of some of the substances?
12. Define the latent heat of vaporization of water with the help of the experiment.
13. Describe an experiment to determine the heat of vaporization and heat of vaporization of water by sketching temperature-time graph.
14. What is meant by evaporation? On what factors the evaporation of liquid depends? Explain how cooling is produced by evaporation.
15. Derive the relation for linear thermal expansion in solids.
16. Show that Lo = (1+ α Δ T)?
17. Temperature of water in a beaker is 50°C, what is its value in Fahrenheit scale?
18. Normal human body temperature is 98.6°F, convert it into Celsius scale and kelvin scale.
19. Calculate the increase in the length of an aluminium bar 2 m long when heated from 0°C to 20°C, if the thermal coefficient of linear expansion of aluminium is 2.5.
20. A balloon contains 1.2 air at 15°C. Find its volume at 40°C. Thermal coefficient of volume expansion of air is 3.67 .
21. How much heat is required to increase the temperature of 0.5 kg of water from 10°C to 65°C?
22. An electric heater supplies heat at the rate of 1000J per second. How much time is required to raise the temperature of 200 g of water from 20°C to 90°C?
23. How much ice will melt by 5000 J of heat? Latent heat of fusion of ice = 336000 J .
24. Find the quantity of heat needed to melt 100g of ice at -10°C into the water at 10°C.
25. How much heat is required to change 100g of water at 100°C into steam? (Latent heat of vaporization of water is 2.26 .
"26. Find the temperature of the water after passing 5 g of steam at 100°C through 500 g of water at 10°C.
(Note: Specific heat of water is 4200 Jkg⁻¹ K⁻¹, Latent heat of vaporization of water is 2.26x10⁶ )"
27. What is thermometer? Explain its different types.
28. What is specific heat? Explain with examples and derive its mathematical formula.
29. Explain the importance of large specific heat capacity of water.
30. Define heat capacity. Derive its mathematical formula and write down an activity to
31. Define latent heat of fusion and write down its mathematical formula.
32. Define evaporation. On what factor speed of evaporation depend? Explain.
33. What is thermal expansion? Explain on the basis of kinetic molecular theory.
34. What is linear Expansion? On what factor it depend? Derive its mathematical
35. What is volume expansion? On what factors it depend? Derive its mathematical
36. Write down the consequences of thermal expansion.
37. Write down the applications of thermal expansion.