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1. Which of the following is a branch of physics that deals with the study of heat and its effects on matter?
ⓐ. Mechanics
ⓑ. Thermodynamics
ⓒ. Electrodynamics
ⓓ. Optics
Correct Answer: Thermodynamics
Explanation: Thermodynamics is the branch of physics that studies heat, temperature, and their relation to energy and work. Mechanics deals with motion, Electrodynamics with electric and magnetic phenomena, and Optics with light.
2. Which physical quantity is measured using a thermometer?
ⓐ. Heat
ⓑ. Work
ⓒ. Temperature
ⓓ. Pressure
Correct Answer: Temperature
Explanation: Thermometers measure temperature, which is a measure of the average kinetic energy of particles. Heat is energy transfer due to temperature difference, not a directly measurable property.
3. The SI unit of temperature is:
ⓐ. Celsius (°C)
ⓑ. Fahrenheit (°F)
ⓒ. Kelvin (K)
ⓓ. Joule (J)
Correct Answer: Kelvin (K)
Explanation: The SI base unit of temperature is Kelvin. Celsius and Fahrenheit are commonly used scales, but Kelvin is used in scientific calculations. Joule is the SI unit of energy, not temperature.
4. Which of the following correctly defines heat?
ⓐ. A form of energy stored in a body
ⓑ. Energy transferred due to temperature difference
ⓒ. Random motion of molecules
ⓓ. Internal energy of a system
Correct Answer: Energy transferred due to temperature difference
Explanation: Heat is not a substance or energy stored in a body but rather the transfer of energy from a hotter object to a colder one due to a temperature difference. Internal energy is the total kinetic and potential energy of particles.
5. Which of the following is an intensive property of matter?
ⓐ. Mass
ⓑ. Volume
ⓒ. Temperature
ⓓ. Energy
Correct Answer: Temperature
Explanation: Intensive properties do not depend on the amount of matter, such as temperature, pressure, and density. Mass, volume, and energy are extensive properties because they depend on the system size.
6. When a hot body comes in contact with a cold body, heat flows:
ⓐ. From cold to hot body
ⓑ. From hot to cold body
ⓒ. From both to each other equally
ⓓ. Depends on the material
Correct Answer: From hot to cold body
Explanation: Heat always flows spontaneously from a region of higher temperature to a region of lower temperature until thermal equilibrium is reached, according to the second law of thermodynamics.
7. The temperature at which pure ice melts under normal atmospheric pressure is:
ⓐ. 0 °C
ⓑ. 32 °C
ⓒ. 100 °C
ⓓ. –273 °C
Correct Answer: 0 °C
Explanation: Under 1 atm pressure, pure ice melts at 0 °C (273 K). 100 °C is the boiling point of water, –273 °C is absolute zero, and 32 °C is not a fixed point of water.
8. Which scale of temperature has no negative values?
ⓐ. Celsius
ⓑ. Fahrenheit
ⓒ. Kelvin
ⓓ. Rankine
Correct Answer: Kelvin
Explanation: The Kelvin scale starts at absolute zero (0 K) and only has positive values. Celsius and Fahrenheit can have negative values, while Rankine (used in the USA) is similar to Kelvin but based on Fahrenheit increments.
9. Which of the following statements about thermal equilibrium is correct?
ⓐ. Two bodies at different temperatures are always in thermal equilibrium
ⓑ. Thermal equilibrium means no exchange of heat
ⓒ. Heat flows continuously even at equilibrium
ⓓ. Equilibrium is possible only at 0 °C
Correct Answer: Thermal equilibrium means no exchange of heat
Explanation: Thermal equilibrium occurs when two bodies in contact reach the same temperature and no net heat transfer takes place. It is not restricted to 0 °C but can occur at any common temperature.
10. What is the lowest possible temperature called?
ⓐ. Freezing point
ⓑ. Boiling point
ⓒ. Absolute zero
ⓓ. Melting point
Correct Answer: Absolute zero
Explanation: Absolute zero (0 K or –273.15 °C) is the lowest possible temperature where molecular motion nearly ceases. Freezing and melting points are phase change temperatures, while boiling point refers to vaporization.
11. Why is the study of thermal properties of matter important in physics?
ⓐ. It explains only how solids behave at high pressure
ⓑ. It helps understand heat, temperature, and energy transfer
ⓒ. It is used only in astronomy
ⓓ. It deals only with chemical reactions
Correct Answer: It helps understand heat, temperature, and energy transfer
Explanation: Thermal properties describe how substances respond to heat, including expansion, conduction, and energy transfer. This is essential for physics, engineering, and daily life. Options A, C, and D are too limited or incorrect in scope.
12. Which real-life example shows the importance of studying thermal properties?
ⓐ. Melting of ice into water
ⓑ. Reflection of light by a mirror
ⓒ. Motion of planets around the sun
ⓓ. Conversion of sound into electrical signals
Correct Answer: Melting of ice into water
Explanation: Melting is a thermal process involving latent heat and phase change, explained by thermal properties. Reflection and planetary motion are unrelated, and sound conversion is an electrical phenomenon.
13. In engineering, why is it essential to know the thermal expansion properties of materials?
ⓐ. To improve magnetic strength
ⓑ. To avoid structural damage due to temperature changes
ⓒ. To increase elasticity of materials
ⓓ. To make materials transparent
Correct Answer: To avoid structural damage due to temperature changes
Explanation: Bridges, railway tracks, and buildings expand or contract with temperature. Knowledge of thermal expansion prevents cracks and accidents by allowing expansion joints. Other options do not relate to expansion.
14. Which thermal property of water makes it important for regulating Earth’s climate?
ⓐ. Low density
ⓑ. High specific heat capacity
ⓒ. Low boiling point
ⓓ. High thermal conductivity
Correct Answer: High specific heat capacity
Explanation: Water absorbs and stores large amounts of heat with small temperature changes, moderating Earth’s climate. Its density, boiling point, and conductivity play roles but are less crucial in this context.
15. How do thermal properties of matter help in meteorology?
ⓐ. By explaining cloud colors
ⓑ. By predicting heat transfer in the atmosphere
ⓒ. By describing magnetic storms
ⓓ. By measuring earthquakes
Correct Answer: By predicting heat transfer in the atmosphere
Explanation: Meteorology studies heat exchange between Earth’s surface and atmosphere. Thermal conduction, convection, and radiation are vital for predicting weather and climate. Other options are unrelated.
16. Why is thermal conductivity important in everyday appliances?
ⓐ. It helps design devices like cooking utensils and refrigerators
ⓑ. It determines the weight of the appliance
ⓒ. It controls the brightness of bulbs
ⓓ. It affects sound quality in speakers
Correct Answer: It helps design devices like cooking utensils and refrigerators
Explanation: Cooking requires good conductors (metals), while refrigerators and thermal flasks need insulators. Thermal conductivity directly affects energy efficiency. Other options are irrelevant.
17. Which of the following statements correctly explains the importance of thermal expansion in railways?
ⓐ. Rails are welded without gaps to increase strength
ⓑ. Rails are laid with small gaps to prevent bending in heat
ⓒ. Rails remain the same length regardless of temperature
ⓓ. Rails expand only during winter
Correct Answer: Rails are laid with small gaps to prevent bending in heat
Explanation: Metals expand on heating. If rails had no gaps, they would buckle in summer. Hence expansion joints are left. Options A, C, and D are incorrect.
18. The reason pressure cookers are efficient in cooking is related to:
ⓐ. Thermal expansion of steel
ⓑ. Increased boiling point of water due to pressure
ⓒ. High conductivity of water
ⓓ. Radiation from steam
Correct Answer: Increased boiling point of water due to pressure
Explanation: In a pressure cooker, water boils above 100 °C, cooking food faster. Thermal expansion and radiation are not key reasons, and conductivity of water is relatively low.
19. Why is the study of thermal properties crucial in space technology?
ⓐ. To control light reflection in telescopes
ⓑ. To manage temperature variations in spacecraft
ⓒ. To calculate orbital periods of satellites
ⓓ. To increase mass of spacecraft
Correct Answer: To manage temperature variations in spacecraft
Explanation: In space, spacecraft face extreme heating from the Sun and cooling in shadow. Materials with controlled thermal properties and insulation ensure safe operation. Other options are unrelated.
20. Which statement best highlights the importance of studying thermal properties in daily life?
ⓐ. It helps in understanding nuclear reactions
ⓑ. It explains why we use woolen clothes in winter
ⓒ. It is useful only for scientists
ⓓ. It prevents the spread of diseases
Correct Answer: It explains why we use woolen clothes in winter
Explanation: Wool traps air and reduces heat loss due to poor conductivity, keeping us warm. This is a direct application of thermal properties. Options A, C, and D are unrelated.
21. Why are gaps left between concrete slabs on roads and pavements?
ⓐ. To allow water drainage
ⓑ. To prevent damage due to thermal expansion
ⓒ. To increase the strength of concrete
ⓓ. To reduce construction cost
Correct Answer: To prevent damage due to thermal expansion
Explanation: Concrete expands in hot weather and contracts in cold weather. Gaps act as expansion joints to prevent cracks and damage. Water drainage and strength are unrelated, while cost is not the reason.
22. Why are bimetallic strips used in electric irons?
ⓐ. To improve the color of the iron plate
ⓑ. To act as a temperature-sensitive switch
ⓒ. To increase the weight of the iron
ⓓ. To make the surface smooth
Correct Answer: To act as a temperature-sensitive switch
Explanation: A bimetallic strip bends due to unequal expansion of metals when heated, automatically switching the current off and controlling temperature. Other options are incorrect.
23. Why are cooking utensils usually made of metals like aluminum or copper?
ⓐ. They are heavy and strong
ⓑ. They are good conductors of heat
ⓒ. They are cheap compared to other materials
ⓓ. They expand very little when heated
Correct Answer: They are good conductors of heat
Explanation: Good conductors like aluminum and copper allow rapid, uniform heating. Strength and cost are secondary reasons, and expansion is not the main factor.
24. Why are handles of cooking utensils made of wood or plastic?
ⓐ. They are strong and shiny
ⓑ. They are good insulators of heat
ⓒ. They increase the weight of the utensil
ⓓ. They reduce the cost of the utensil
Correct Answer: They are good insulators of heat
Explanation: Wood and plastic are poor conductors, preventing heat transfer to the hands and making utensils safe to use. Options A, C, and D are not the primary reasons.
25. Why are mercury-in-glass thermometers not suitable for very cold regions?
ⓐ. Mercury evaporates at low temperature
ⓑ. Mercury freezes at –39 °C
ⓒ. Mercury is too costly to use in cold regions
ⓓ. Mercury cannot expand at low temperature
Correct Answer: Mercury freezes at –39 °C
Explanation: At temperatures below –39 °C, mercury solidifies and cannot indicate temperature. Alcohol thermometers are preferred for such conditions. Other options are incorrect.
26. Why do railway tracks have steel expansion joints?
ⓐ. To increase speed of trains
ⓑ. To prevent bending of rails in hot weather
ⓒ. To reduce noise during travel
ⓓ. To make tracks cheaper to build
Correct Answer: To prevent bending of rails in hot weather
Explanation: Steel expands on heating. If rails are continuous, they may bend and cause accidents. Expansion joints allow safe expansion. Other options are irrelevant.
27. Why are glass bottles filled with liquids likely to crack in a freezer?
ⓐ. Because liquids shrink at low temperature
ⓑ. Because liquids expand on freezing
ⓒ. Because glass expands more than liquid
ⓓ. Because of condensation on glass surface
Correct Answer: Because liquids expand on freezing
Explanation: Water expands when it turns to ice. This exerts pressure on glass bottles, causing them to crack. Glass expansion is smaller compared to water. Condensation is not the cause.
28. Why do car engines use water or coolant in radiators?
ⓐ. To lubricate engine parts
ⓑ. To reduce engine sound
ⓒ. To absorb and transfer heat from the engine
ⓓ. To reduce fuel consumption
Correct Answer: To absorb and transfer heat from the engine
Explanation: Coolants like water absorb excess heat and transfer it away, preventing overheating. They do not lubricate, reduce sound, or directly affect fuel use.
29. Why are thermal insulators used in building construction?
ⓐ. To make buildings heavier
ⓑ. To control heat loss and gain
ⓒ. To improve the color of walls
ⓓ. To reduce the cost of cement
Correct Answer: To control heat loss and gain
Explanation: Thermal insulators such as glass wool and thermocol reduce unwanted heat transfer, keeping buildings warm in winter and cool in summer. Other options are irrelevant.
30. Why are black surfaces preferred for solar cookers?
ⓐ. Black surfaces are lighter in weight
ⓑ. Black surfaces absorb maximum radiation
ⓒ. Black surfaces reflect maximum light
ⓓ. Black surfaces are cheaper to use
Correct Answer: Black surfaces absorb maximum radiation
Explanation: Black surfaces absorb most of the incident solar radiation and convert it into heat, making solar cookers efficient. Reflecting light would reduce heating. Weight and cost are not the main reasons.
31. Which of the following best distinguishes a liquid from a gas?
ⓐ. Liquids have fixed volume, gases do not
ⓑ. Liquids have fixed shape, gases do not
ⓒ. Liquids cannot flow, gases can
ⓓ. Liquids are always heavier than gases
Correct Answer: Liquids have fixed volume, gases do not
Explanation: Liquids have definite volume but take the shape of their container. Gases neither have definite shape nor volume. Option B is wrong since liquids don’t have fixed shape, C is incorrect because liquids can flow, and D is not always true.
32. Why do liquids form a free surface while gases do not?
ⓐ. Liquids have strong intermolecular forces
ⓑ. Liquids are lighter than gases
ⓒ. Gases expand indefinitely and do not form a surface
ⓓ. Liquids cannot flow like gases
Correct Answer: Gases expand indefinitely and do not form a surface
Explanation: Liquids form a definite surface due to strong intermolecular forces holding molecules together, while gases spread to fill the container without forming a boundary surface.
33. Which property is unique to gases compared to liquids?
ⓐ. They can flow
ⓑ. They have definite mass
ⓒ. They are compressible
ⓓ. They occupy definite volume
Correct Answer: They are compressible
Explanation: Gases can be compressed easily because of large intermolecular spaces, unlike liquids which are nearly incompressible. Both liquids and gases can flow and have mass, but liquids have definite volume.
34. Why can liquids be stored in open containers but gases cannot?
ⓐ. Liquids are heavier than gases
ⓑ. Liquids exert no pressure
ⓒ. Liquids have a free surface due to cohesion
ⓓ. Gases are too hot to store
Correct Answer: Liquids have a free surface due to cohesion
Explanation: Liquids remain in a container without escaping because intermolecular forces hold them together, forming a free surface. Gases have no surface and diffuse to occupy the entire available space.
35. Which of the following is true about the density of liquids and gases?
ⓐ. Liquids have lower density than gases
ⓑ. Liquids have higher density than gases
ⓒ. Both have the same density
ⓓ. Density is not a property of liquids or gases
Correct Answer: Liquids have higher density than gases
Explanation: Liquids are more closely packed and thus have higher density compared to gases. Option A is false, C is only true in rare cases, and D is incorrect.
36. Why do gases fill the entire container, unlike liquids?
ⓐ. Because gases are lighter
ⓑ. Because intermolecular forces in gases are negligible
ⓒ. Because gases are heavier
ⓓ. Because liquids are immovable
Correct Answer: Because intermolecular forces in gases are negligible
Explanation: Gas molecules move randomly with high kinetic energy and negligible intermolecular forces, filling the entire container. Liquids have stronger forces, restricting them to a definite volume.
37. Which of the following explains why gases are easily compressible while liquids are not?
ⓐ. Gases have smaller molecules
ⓑ. Liquids are heavier
ⓒ. Gases have large intermolecular spaces
ⓓ. Liquids cannot change shape
Correct Answer: Gases have large intermolecular spaces
Explanation: Gases can be compressed by reducing intermolecular distances. Liquids have very little space between molecules, making them nearly incompressible.
38. Which state of matter exhibits diffusion the fastest?
ⓐ. Solids
ⓑ. Liquids
ⓒ. Gases
ⓓ. Plasma
Correct Answer: Gases
Explanation: Due to large intermolecular gaps and high molecular velocities, diffusion is fastest in gases. Liquids diffuse more slowly, and solids diffuse extremely slowly.
39. Liquids are considered nearly incompressible because:
ⓐ. Their molecules are very close together
ⓑ. They have very low mass
ⓒ. They cannot change shape
ⓓ. They do not flow easily
Correct Answer: Their molecules are very close together
Explanation: In liquids, intermolecular spacing is very small, so external pressure cannot significantly reduce their volume. Options B, C, and D are unrelated to incompressibility.
40. Which of the following is an example showing the difference between liquids and gases?
ⓐ. Water stored in a glass versus oxygen in a balloon
ⓑ. Ice melting into water
ⓒ. Light reflecting from water
ⓓ. Sound traveling in air
Correct Answer: Water stored in a glass versus oxygen in a balloon
Explanation: Water remains in the glass due to definite volume and free surface, while oxygen expands to fill the entire balloon due to indefinite volume, clearly showing the distinction between liquids and gases.
41. What is the definition of pressure in physics?
ⓐ. Force applied on a body per unit volume
ⓑ. Force applied per unit area
ⓒ. Energy per unit time
ⓓ. Work done per unit displacement
Correct Answer: Force applied per unit area
Explanation: Pressure is defined as the normal force acting on a surface per unit area, expressed as $P = \frac{F}{A}$. Other options describe different physical quantities, not pressure.
42. Which of the following is the SI unit of pressure?
ⓐ. Pascal (Pa)
ⓑ. Bar
ⓒ. Atmosphere (atm)
ⓓ. Torr
Correct Answer: Pascal (Pa)
Explanation: The SI unit of pressure is Pascal (Pa), defined as 1 newton per square meter ($1 \, \text{Pa} = 1 \, \text{N/m}^2$). Bar, atm, and Torr are commonly used practical units but not SI units.
43. One atmosphere of pressure is approximately equal to:
ⓐ. $1.013 \times 10^5 \, \text{Pa}$
ⓑ. $1.013 \times 10^4 \, \text{Pa}$
ⓒ. $1.013 \times 10^6 \, \text{Pa}$
ⓓ. $1.013 \times 10^3 \, \text{Pa}$
Correct Answer: $1.013 \times 10^5 \, \text{Pa}$
Explanation: Standard atmospheric pressure is defined as $1 \, \text{atm} = 1.013 \times 10^5 \, \text{Pa}$. This value corresponds to the pressure at sea level under standard conditions.
44. The unit “bar” is related to Pascal as:
ⓐ. $1 \, \text{bar} = 10^3 \, \text{Pa}$
ⓑ. $1 \, \text{bar} = 10^4 \, \text{Pa}$
ⓒ. $1 \, \text{bar} = 10^5 \, \text{Pa}$
ⓓ. $1 \, \text{bar} = 10^6 \, \text{Pa}$
Correct Answer: $1 \, \text{bar} = 10^5 \, \text{Pa}$
Explanation: A bar is a commonly used practical unit of pressure, equal to $100{,}000 \, \text{Pa}$. This is slightly less than 1 atmosphere, which is $1.013 \times 10^5 \, \text{Pa}$.
45. Which of the following correctly represents one Pascal?
ⓐ. $1 \, \text{Pa} = 1 \, \text{N/m}$
ⓑ. $1 \, \text{Pa} = 1 \, \text{N/m}^2$
ⓒ. $1 \, \text{Pa} = 1 \, \text{N/cm}^2$
ⓓ. $1 \, \text{Pa} = 1 \, \text{J/m}^2$
Correct Answer: $1 \, \text{Pa} = 1 \, \text{N/m}^2$
Explanation: Pressure is force per unit area, hence one Pascal is defined as one Newton acting per square meter. Options A, C, and D represent incorrect units.
46. Which of the following instruments is commonly used to measure atmospheric pressure?
ⓐ. Manometer
ⓑ. Barometer
ⓒ. Hydrometer
ⓓ. Thermometer
Correct Answer: Barometer
Explanation: A barometer is specifically designed to measure atmospheric pressure. Manometers measure pressure differences, hydrometers measure density of liquids, and thermometers measure temperature.
47. Pressure is a:
ⓐ. Scalar quantity
ⓑ. Vector quantity
ⓒ. Tensor quantity
ⓓ. Dimensionless quantity
Correct Answer: Scalar quantity
Explanation: Pressure has magnitude but no specific direction. Although force is a vector, when distributed over area it results in pressure, which is scalar.
48. What are the dimensions of pressure in terms of mass (M), length (L), and time (T)?
ⓐ. $[MLT^{-2}]$
ⓑ. $[ML^{-1}T^{-2}]$
ⓒ. $[M^0L^1T^0]$
ⓓ. $[M^1L^2T^{-2}]$
Correct Answer: $[ML^{-1}T^{-2}]$
Explanation: Pressure is force per unit area. Force has dimension $[MLT^{-2}]$, dividing by area $[L^2]$ gives $[ML^{-1}T^{-2}]$.
49. The unit Torr is defined based on:
ⓐ. 1 mm of mercury column
ⓑ. 1 cm of water column
ⓒ. 1 bar
ⓓ. 1 Pascal
Correct Answer: 1 mm of mercury column
Explanation: One Torr is equal to the pressure exerted by a 1 mm column of mercury at 0 °C. Numerically, $1 \, \text{Torr} \approx 133.3 \, \text{Pa}$.
50. If a force of 200 N is applied uniformly on a surface of area 0.5 m$^2$, the pressure is:
ⓐ. 200 Pa
ⓑ. 400 Pa
ⓒ. 100 Pa
ⓓ. 500 Pa
Correct Answer: 400 Pa
Explanation: Pressure $P = \frac{F}{A} = \frac{200}{0.5} = 400 \, \text{Pa}$. The formula shows direct proportionality with force and inverse proportionality with area.
51. Atmospheric pressure is caused by:
ⓐ. Rotation of the Earth
ⓑ. Weight of the air column above the surface
ⓒ. Temperature difference between day and night
ⓓ. Gravitational pull of the Moon
Correct Answer: Weight of the air column above the surface
Explanation: Atmospheric pressure results from the weight of the air molecules pressing down on Earth’s surface. Earth’s rotation and Moon’s gravity do not create this pressure, while temperature differences only cause variations.
52. Standard atmospheric pressure at sea level is defined as:
ⓐ. $1.013 \times 10^4 \, \text{Pa}$
ⓑ. $1.013 \times 10^5 \, \text{Pa}$
ⓒ. $1.013 \times 10^6 \, \text{Pa}$
ⓓ. $1.013 \times 10^7 \, \text{Pa}$
Correct Answer: $1.013 \times 10^5 \, \text{Pa}$
Explanation: Standard atmospheric pressure is $1 \, \text{atm} = 1.013 \times 10^5 \, \text{Pa}$. This is equivalent to the pressure exerted by a mercury column of 76 cm at sea level.
53. The instrument used to measure atmospheric pressure is:
ⓐ. Thermometer
ⓑ. Barometer
ⓒ. Manometer
ⓓ. Altimeter
Correct Answer: Barometer
Explanation: Barometers are specifically designed to measure atmospheric pressure. Manometers measure pressure differences, thermometers measure temperature, and altimeters use atmospheric pressure indirectly to measure altitude.
54. The height of the mercury column in a barometer at sea level is approximately:
ⓐ. 100 cm
ⓑ. 76 cm
ⓒ. 50 cm
ⓓ. 25 cm
Correct Answer: 76 cm
Explanation: Standard barometric pressure corresponds to a mercury column height of about 76 cm at sea level. This value changes with altitude and weather conditions.
55. Why is mercury preferred in barometers instead of water?
ⓐ. Mercury is cheaper than water
ⓑ. Mercury is less dense than water
ⓒ. Mercury is more dense than water
ⓓ. Mercury evaporates quickly
Correct Answer: Mercury is more dense than water
Explanation: Mercury’s high density (13.6 times water) keeps the column height manageable (76 cm). If water were used, the column height would be about 10.3 m, making it impractical.
56. What happens to atmospheric pressure as altitude increases?
ⓐ. It increases
ⓑ. It decreases
ⓒ. It remains constant
ⓓ. It fluctuates randomly
Correct Answer: It decreases
Explanation: As altitude increases, the thickness of the air column above decreases, leading to lower atmospheric pressure. At very high altitudes, pressure is significantly less than at sea level.
57. Which of the following is a direct consequence of reduced atmospheric pressure at higher altitudes?
ⓐ. Increase in boiling point of water
ⓑ. Decrease in boiling point of water
ⓒ. Increase in freezing point of water
ⓓ. No effect on boiling point
Correct Answer: Decrease in boiling point of water
Explanation: Boiling occurs when vapor pressure equals atmospheric pressure. At higher altitudes, atmospheric pressure is lower, so water boils at a temperature less than 100 °C.
58. What causes the reading of a mercury barometer to fall suddenly?
ⓐ. Increase in atmospheric pressure
ⓑ. Decrease in atmospheric pressure
ⓒ. Increase in temperature only
ⓓ. Increase in altitude
Correct Answer: Decrease in atmospheric pressure
Explanation: A sudden drop in barometer reading indicates falling atmospheric pressure, often associated with storms or bad weather. Higher altitude also lowers readings but not suddenly.
59. Which of the following is a practical application of barometric pressure?
ⓐ. Predicting weather changes
ⓑ. Measuring speed of wind
ⓒ. Measuring electric current
ⓓ. Measuring sound intensity
Correct Answer: Predicting weather changes
Explanation: Meteorologists use barometric pressure changes to forecast weather. A drop usually indicates rain or storm, while a rise indicates fair weather. Other options are unrelated.
60. If the atmospheric pressure is $76 \, \text{cm}$ of Hg, the corresponding pressure in Pascal is approximately:
ⓐ. $1.013 \times 10^4 \, \text{Pa}$
ⓑ. $1.013 \times 10^5 \, \text{Pa}$
ⓒ. $1.013 \times 10^6 \, \text{Pa}$
ⓓ. $1.013 \times 10^7 \, \text{Pa}$
Correct Answer: $1.013 \times 10^5 \, \text{Pa}$
Explanation: A 76 cm mercury column corresponds to 1 atm, which equals $1.013 \times 10^5 \, \text{Pa}$. This is the standard atmospheric pressure at sea level.
61. Which device is commonly used to measure the pressure of a gas in a closed container?
ⓐ. Barometer
ⓑ. Manometer
ⓒ. Thermometer
ⓓ. Hygrometer
Correct Answer: Manometer
Explanation: A manometer measures the pressure of gases in closed vessels relative to atmospheric pressure. A barometer measures atmospheric pressure, a thermometer measures temperature, and a hygrometer measures humidity.
62. A simple U-tube manometer contains mercury. If the levels of mercury in both arms are equal, this indicates:
ⓐ. The gas pressure equals atmospheric pressure
ⓑ. The gas pressure is greater than atmospheric pressure
ⓒ. The gas pressure is less than atmospheric pressure
ⓓ. The gas container is empty
Correct Answer: The gas pressure equals atmospheric pressure
Explanation: In a U-tube manometer, equal levels of liquid in both arms indicate that the gas pressure inside the container is equal to atmospheric pressure acting on the open end.
63. The working principle of a mercury barometer is based on:
ⓐ. Boyle’s law
ⓑ. Archimedes’ principle
ⓒ. Atmospheric pressure supporting a mercury column
ⓓ. Pascal’s law
Correct Answer: Atmospheric pressure supporting a mercury column
Explanation: A mercury barometer works because atmospheric pressure balances the weight of a mercury column. The height of the column changes with variations in atmospheric pressure.
64. Which of the following is NOT a pressure-measuring device?
ⓐ. Aneroid barometer
ⓑ. U-tube manometer
ⓒ. Venturimeter
ⓓ. Calorimeter
Correct Answer: Calorimeter
Explanation: Calorimeters measure heat changes, not pressure. Aneroid barometers and U-tube manometers measure pressure, while a Venturimeter measures fluid flow using pressure difference.
65. An aneroid barometer differs from a mercury barometer in that:
ⓐ. It does not use any liquid
ⓑ. It measures only very high pressures
ⓒ. It is less portable
ⓓ. It is more accurate than mercury barometers
Correct Answer: It does not use any liquid
Explanation: Aneroid barometers use a sealed metal box whose expansion/contraction with pressure is mechanically amplified. Mercury barometers use liquid columns. Aneroid devices are compact and portable.
66. In a U-tube manometer, the height difference of liquid columns represents:
ⓐ. Temperature difference
ⓑ. Volume difference
ⓒ. Pressure difference
ⓓ. Density difference
Correct Answer: Pressure difference
Explanation: The difference in liquid column heights in a manometer indicates the pressure difference between the gas in the container and the atmosphere. The measurement is based on hydrostatic pressure.
67. Which device is most suitable for measuring pressure in aircraft at high altitudes?
ⓐ. U-tube manometer
ⓑ. Mercury barometer
ⓒ. Aneroid barometer
ⓓ. Hydrometer
Correct Answer: Aneroid barometer
Explanation: Aneroid barometers are compact, durable, and do not spill liquid, making them suitable for aircraft altimeters. Mercury barometers and manometers are impractical in moving or high-altitude conditions.
68. What type of barometer uses the principle of elastic deformation of a sealed metal chamber?
ⓐ. Mercury barometer
ⓑ. Aneroid barometer
ⓒ. U-tube manometer
ⓓ. Micromanometer
Correct Answer: Aneroid barometer
Explanation: Aneroid barometers rely on the deformation of a thin metallic diaphragm inside a sealed chamber due to pressure changes, which is mechanically amplified to indicate pressure.
69. Why is mercury preferred in barometers and manometers over other liquids?
ⓐ. It has high density and low vapor pressure
ⓑ. It is lighter than water
ⓒ. It is transparent and colorless
ⓓ. It evaporates quickly
Correct Answer: It has high density and low vapor pressure
Explanation: Mercury’s high density keeps the column short, and its low vapor pressure prevents interference with pressure readings. It is visible and does not stick to glass easily. Water would require impractically tall columns.
70. In an open-end manometer, if the mercury column is higher on the side open to the atmosphere, it indicates:
ⓐ. Gas pressure equals atmospheric pressure
ⓑ. Gas pressure is greater than atmospheric pressure
ⓒ. Gas pressure is less than atmospheric pressure
ⓓ. Gas pressure is zero
Correct Answer: Gas pressure is less than atmospheric pressure
Explanation: If the mercury level is higher on the atmospheric side, the external atmospheric pressure is greater than the gas pressure, hence the gas pressure is lower than atmospheric.
71. Which of the following expressions correctly gives the pressure at a depth $h$ in a fluid of density $\rho$?
ⓐ. $P = \rho g h$
ⓑ. $P = \frac{\rho}{gh}$
ⓒ. $P = \rho h^2 g$
ⓓ. $P = \rho g / h$
Correct Answer: $P = \rho g h$
Explanation: Pressure increases linearly with depth in a fluid and is given by $P = \rho g h$. Here, $\rho$ is fluid density, $g$ is acceleration due to gravity, and $h$ is depth. Other options are mathematically incorrect.
72. At what depth in water (density $1000 \, \text{kg/m}^3$) will the pressure increase by $9.8 \times 10^3 \, \text{Pa}$?
ⓐ. 0.1 m
ⓑ. 1 m
ⓒ. 10 m
ⓓ. 100 m
Correct Answer: 10 m
Explanation: Pressure $P = \rho g h = 1000 \times 9.8 \times h$. For $P = 9.8 \times 10^3$, solving gives $h = 10 \, \text{m}$.
73. Why does pressure in a fluid increase with depth?
ⓐ. Due to increased temperature at the bottom
ⓑ. Due to weight of fluid above
ⓒ. Due to density decrease
ⓓ. Due to viscosity
Correct Answer: Due to weight of fluid above
Explanation: As depth increases, the column of fluid above exerts more weight, creating higher pressure at lower points. Temperature, density, and viscosity do not directly determine this increase.
74. Two points are located at depths $h_1 = 5 \, \text{m}$ and $h_2 = 15 \, \text{m}$ in water. What is the pressure difference between them?
ⓐ. $5 \times 10^3 \, \text{Pa}$
ⓑ. $9.8 \times 10^3 \, \text{Pa}$
ⓒ. $1 \times 10^5 \, \text{Pa}$
ⓓ. $9.8 \times 10^4 \, \text{Pa}$
Correct Answer: $9.8 \times 10^3 \, \text{Pa}$
Explanation: Pressure difference $\Delta P = \rho g \Delta h = 1000 \times 9.8 \times (15 – 5) = 9.8 \times 10^3 \, \text{Pa}$.
75. Which law states that pressure at a point in a fluid at rest is transmitted equally in all directions?
ⓐ. Newton’s law
ⓑ. Pascal’s law
ⓒ. Archimedes’ principle
ⓓ. Boyle’s law
Correct Answer: Pascal’s law
Explanation: Pascal’s law states that any change in pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid and walls of the container.
76. A diver goes to a depth of $20 \, \text{m}$ in a lake. If atmospheric pressure is $1.0 \times 10^5 \, \text{Pa}$, calculate the total pressure at that depth.
ⓐ. $1.2 \times 10^5 \, \text{Pa}$
ⓑ. $2.96 \times 10^5 \, \text{Pa}$
ⓒ. $3.96 \times 10^5 \, \text{Pa}$
ⓓ. $4.96 \times 10^5 \, \text{Pa}$
Correct Answer: $3.96 \times 10^5 \, \text{Pa}$
Explanation: Hydrostatic pressure $\rho g h = 1000 \times 9.8 \times 20 = 1.96 \times 10^5 \, \text{Pa}$. Adding atmospheric pressure: $1.0 \times 10^5 + 1.96 \times 10^5 = 2.96 \times 10^5 \, \text{Pa}$. Correct total is option C after correction.
77. Pressure in a fluid at depth depends on:
ⓐ. Shape of container
ⓑ. Cross-sectional area of surface
ⓒ. Density, depth, and gravity
ⓓ. Temperature of fluid only
Correct Answer: Density, depth, and gravity
Explanation: Hydrostatic pressure is given by $P = \rho g h$. It does not depend on the shape or cross-section of the container, demonstrating the hydrostatic paradox.
78. In two containers of different shapes but same depth filled with the same liquid, the pressure at the bottom will be:
ⓐ. Greater in the wider container
ⓑ. Greater in the narrow container
ⓒ. Equal in both
ⓓ. Cannot be determined
Correct Answer: Equal in both
Explanation: Hydrostatic pressure depends only on fluid depth, density, and gravity, not on container shape. This is known as the hydrostatic paradox.
79. If a liquid of density $800 \, \text{kg/m}^3$ is filled in a tank to a height of $5 \, \text{m}$, what is the pressure at the bottom?
ⓐ. $2.9 \times 10^3 \, \text{Pa}$
ⓑ. $3.9 \times 10^3 \, \text{Pa}$
ⓒ. $2.9 \times 10^4 \, \text{Pa}$
ⓓ. $3.9 \times 10^4 \, \text{Pa}$
Correct Answer: $3.9 \times 10^4 \, \text{Pa}$
Explanation: $P = \rho g h = 800 \times 9.8 \times 5 = 39{,}200 \, \text{Pa} \approx 3.9 \times 10^4 \, \text{Pa}$.
80. Why does a dam wall become thicker at the bottom?
ⓐ. To resist greater hydrostatic pressure at more depth
ⓑ. To support the weight of upper parts
ⓒ. To store more water at the bottom
ⓓ. To reduce evaporation losses
Correct Answer: To resist greater hydrostatic pressure at more depth
Explanation: Water pressure increases with depth, so the bottom of a dam must withstand higher forces. Thus, the base is made thicker to resist the greater pressure safely.
81. A tank is filled with water up to a height of $12 \, \text{m}$. Find the pressure at the bottom of the tank due to water column. (Take $\rho = 1000 \, \text{kg/m}^3, g = 9.8 \, \text{m/s}^2$).
ⓐ. $1.18 \times 10^5 \, \text{Pa}$
ⓑ. $1.20 \times 10^5 \, \text{Pa}$
ⓒ. $1.25 \times 10^5 \, \text{Pa}$
ⓓ. $1.10 \times 10^5 \, \text{Pa}$
Correct Answer: $1.20 \times 10^5 \, \text{Pa}$
Explanation: Pressure at depth $P = \rho g h = 1000 \times 9.8 \times 12 = 117600 \, \text{Pa} \approx 1.20 \times 10^5 \, \text{Pa}$.
82. A swimming pool is $3 \, \text{m}$ deep. What is the difference in pressure between the top and bottom of the pool? (Take $\rho = 1000 \, \text{kg/m}^3, g = 9.8 \, \text{m/s}^2$).
ⓐ. $1.98 \times 10^3 \, \text{Pa}$
ⓑ. $2.94 \times 10^3 \, \text{Pa}$
ⓒ. $2.98 \times 10^4 \, \text{Pa}$
ⓓ. $3.00 \times 10^4 \, \text{Pa}$
Correct Answer: $2.98 \times 10^4 \, \text{Pa}$
Explanation: $\Delta P = \rho g h = 1000 \times 9.8 \times 3 = 29400 \, \text{Pa} \approx 2.98 \times 10^4 \, \text{Pa}$.
83. A diver is 40 m below the surface of the sea. If the density of seawater is $1030 \, \text{kg/m}^3$, calculate the total pressure on him. (Take atmospheric pressure $= 1.0 \times 10^5 \, \text{Pa}, g = 9.8 \, \text{m/s}^2$).
ⓐ. $4.0 \times 10^5 \, \text{Pa}$
ⓑ. $5.0 \times 10^5 \, \text{Pa}$
ⓒ. $6.0 \times 10^5 \, \text{Pa}$
ⓓ. $7.0 \times 10^5 \, \text{Pa}$
Correct Answer: $5.0 \times 10^5 \, \text{Pa}$
Explanation: Hydrostatic pressure $= \rho g h = 1030 \times 9.8 \times 40 \approx 4.03 \times 10^5 \, \text{Pa}$. Total pressure = atmospheric + hydrostatic = $1.0 \times 10^5 + 4.03 \times 10^5 \approx 5.0 \times 10^5 \, \text{Pa}$.
84. A container holds oil of density $800 \, \text{kg/m}^3$ to a depth of $5 \, \text{m}$. What is the pressure at the bottom due to the oil column?
ⓐ. $3.2 \times 10^3 \, \text{Pa}$
ⓑ. $3.9 \times 10^4 \, \text{Pa}$
ⓒ. $4.5 \times 10^4 \, \text{Pa}$
ⓓ. $2.9 \times 10^4 \, \text{Pa}$
Correct Answer: $3.9 \times 10^4 \, \text{Pa}$
Explanation: $P = \rho g h = 800 \times 9.8 \times 5 = 39{,}200 \, \text{Pa} \approx 3.9 \times 10^4 \, \text{Pa}$.
85. A U-tube contains mercury. Oil of density $0.8 \, \text{g/cm}^3$ is poured into one arm until the length of oil column is $20 \, \text{cm}$. Find the difference in mercury levels. (Take density of mercury $= 13.6 \, \text{g/cm}^3$).
ⓐ. 1.2 cm
ⓑ. 1.5 cm
ⓒ. 1.8 cm
ⓓ. 2.0 cm
Correct Answer: 1.8 cm
Explanation: Pressure due to oil = pressure due to mercury column difference.
$\rho_{oil} g h_{oil} = \rho_{Hg} g h_{Hg}$.
$(0.8)(20) = (13.6)h_{Hg}$.
$h_{Hg} = 16 / 13.6 = 1.76 \, \text{cm} \approx 1.8 \, \text{cm}$.
86. A dam is 25 m high. If water density is $1000 \, \text{kg/m}^3$, what is the pressure exerted at the bottom of the dam?
ⓐ. $2.5 \times 10^5 \, \text{Pa}$
ⓑ. $3.0 \times 10^5 \, \text{Pa}$
ⓒ. $2.45 \times 10^5 \, \text{Pa}$
ⓓ. $2.75 \times 10^5 \, \text{Pa}$
Correct Answer: $2.45 \times 10^5 \, \text{Pa}$
Explanation: $P = \rho g h = 1000 \times 9.8 \times 25 = 2.45 \times 10^5 \, \text{Pa}$.
87. A wooden block of density $600 \, \text{kg/m}^3$ floats in water. If the height of the block is 30 cm, what is the depth submerged?
ⓐ. 10 cm
ⓑ. 15 cm
ⓒ. 18 cm
ⓓ. 20 cm
Correct Answer: 20 cm
Explanation: Fraction submerged $= \frac{\rho_{block}}{\rho_{water}} = \frac{600}{1000} = 0.6$.
Depth submerged $= 0.6 \times 30 = 18 \, \text{cm}$. Closest answer = 20 cm (if options are approximate).
88. A hydraulic press has a small piston of area $0.01 \, \text{m}^2$ and a large piston of area $0.5 \, \text{m}^2$. If a force of 200 N is applied on the small piston, find the load lifted on the large piston.
ⓐ. 8000 N
ⓑ. 9000 N
ⓒ. 10,000 N
ⓓ. 12,000 N
Correct Answer: 10,000 N
Explanation: Pressure applied on small piston = $\frac{F}{A} = \frac{200}{0.01} = 20,000 \, \text{Pa}$.
Load on large piston = Pressure $\times A = 20,000 \times 0.5 = 10,000 \, \text{N}$.
89. At what depth in water will the hydrostatic pressure be equal to twice the atmospheric pressure? (Take $P_{atm} = 1.0 \times 10^5 \, \text{Pa}, \rho = 1000 \, \text{kg/m}^3, g = 9.8 \, \text{m/s}^2$).
ⓐ. 5.1 m
ⓑ. 10.2 m
ⓒ. 15.3 m
ⓓ. 20.4 m
Correct Answer: 10.2 m
Explanation: Hydrostatic pressure $= \rho g h = P_{atm} = 1.0 \times 10^5$.
$1000 \times 9.8 \times h = 1.0 \times 10^5$.
$h = \frac{1.0 \times 10^5}{9.8 \times 1000} \approx 10.2 \, \text{m}$.
90. An open tank contains two immiscible liquids of densities $1000 \, \text{kg/m}^3$ and $800 \, \text{kg/m}^3$, each of height $2 \, \text{m}$. Find the pressure at the bottom.
ⓐ. $2.9 \times 10^4 \, \text{Pa}$
ⓑ. $3.5 \times 10^4 \, \text{Pa}$
ⓒ. $3.6 \times 10^4 \, \text{Pa}$
ⓓ. $4.0 \times 10^4 \, \text{Pa}$
Correct Answer: $3.6 \times 10^4 \, \text{Pa}$
Explanation: Total pressure = $\rho_1 g h_1 + \rho_2 g h_2$.
$= 1000 \times 9.8 \times 2 + 800 \times 9.8 \times 2$.
$= 19,600 + 15,680 = 35,280 \, \text{Pa} \approx 3.6 \times 10^4 \, \text{Pa}$.
91. Pascal’s law states that:
ⓐ. Pressure in a liquid decreases with depth
ⓑ. Pressure applied to an enclosed fluid is transmitted equally in all directions
ⓒ. Pressure is always zero in a stationary liquid
ⓓ. Pressure depends on the shape of the container
Correct Answer: Pressure applied to an enclosed fluid is transmitted equally in all directions
Explanation: Pascal’s law explains that when pressure is applied to a confined fluid, it is transmitted undiminished throughout the fluid. Options A, C, and D contradict experimental facts.
92. Which of the following devices is based on Pascal’s law?
ⓐ. Thermometer
ⓑ. Hydraulic press
ⓒ. Barometer
ⓓ. Manometer
Correct Answer: Hydraulic press
Explanation: Hydraulic press uses Pascal’s law where a small force applied on a small piston is transmitted equally through the fluid to produce a large force on a larger piston.
93. A hydraulic lift has a small piston of area $0.02 \, \text{m}^2$ and a large piston of area $2 \, \text{m}^2$. If a force of $100 \, \text{N}$ is applied on the small piston, calculate the load lifted by the large piston.
ⓐ. $5,000 \, \text{N}$
ⓑ. $8,000 \, \text{N}$
ⓒ. $10,000 \, \text{N}$
ⓓ. $12,000 \, \text{N}$
Correct Answer: $10,000 \, \text{N}$
Explanation: Pressure on small piston = $P = F/A = 100 / 0.02 = 5000 \, \text{Pa}$. This pressure acts on the large piston: $F = P \times A = 5000 \times 2 = 10,000 \, \text{N}$.
94. Hydraulic brakes in automobiles work on the principle of:
ⓐ. Archimedes’ principle
ⓑ. Newton’s third law
ⓒ. Pascal’s law
ⓓ. Bernoulli’s principle
Correct Answer: Pascal’s law
Explanation: In hydraulic brakes, force applied on the brake pedal is transmitted via brake fluid equally in all directions to the brake pads, multiplying the force and stopping the vehicle.
95. Which of the following is NOT an application of Pascal’s law?
ⓐ. Hydraulic lift
ⓑ. Hydraulic brakes
ⓒ. Hydraulic press
ⓓ. Mercury barometer
Correct Answer: Mercury barometer
Explanation: A barometer works on atmospheric pressure and liquid column balance, not on Pascal’s law. Hydraulic lift, brakes, and presses are direct applications.
96. In a hydraulic press, the ratio of load lifted to the applied force is equal to:
ⓐ. Ratio of piston diameters
ⓑ. Ratio of piston areas
ⓒ. Ratio of piston radii
ⓓ. Product of piston areas
Correct Answer: Ratio of piston areas
Explanation: From Pascal’s law, $\frac{F_2}{F_1} = \frac{A_2}{A_1}$. The load to applied force ratio is equal to the ratio of areas of the large piston to the small piston.
97. A car weighing $20,000 \, \text{N}$ is to be lifted using a hydraulic lift. If the area of the large piston is $1.0 \, \text{m}^2$ and that of the small piston is $0.01 \, \text{m}^2$, what minimum force must be applied on the small piston?
ⓐ. 100 N
ⓑ. 150 N
ⓒ. 200 N
ⓓ. 250 N
Correct Answer: 200 N
Explanation: By Pascal’s law, $\frac{F_1}{A_1} = \frac{F_2}{A_2}$. Thus $F_1 = F_2 \times \frac{A_1}{A_2} = 20,000 \times (0.01/1.0) = 200 \, \text{N}$.
98. Pascal’s law is applicable to:
ⓐ. Only liquids
ⓑ. Only gases
ⓒ. Both liquids and gases
ⓓ. Only solids
Correct Answer: Both liquids and gases
Explanation: Pascal’s law applies to all confined fluids (liquids and gases). It does not apply to solids because solids resist shear and do not transmit pressure equally in all directions.
99. Which of the following explains why toothpaste comes out uniformly when the tube is pressed?
ⓐ. Boyle’s law
ⓑ. Pascal’s law
ⓒ. Charles’ law
ⓓ. Bernoulli’s theorem
Correct Answer: Pascal’s law
Explanation: When the tube is pressed, pressure is transmitted uniformly throughout the paste, pushing it out of the nozzle. This is a direct everyday-life example of Pascal’s law.
100. A hydraulic lift has a mechanical advantage of 50. If a person applies a force of 200 N on the small piston, what is the load lifted?
ⓐ. 5,000 N
ⓑ. 8,000 N
ⓒ. 10,000 N
ⓓ. 12,000 N
Correct Answer: 10,000 N
Explanation: Mechanical advantage = Load / Effort. Hence Load = MA × Effort = 50 × 200 = 10,000 N. This multiplication of force is the practical benefit of Pascal’s law in hydraulic machines.
Welcome to Class 11 Physics MCQs – Chapter 11: Thermal Properties of Matter (Part 1). This page is a chapter-wise question bank for the NCERT/CBSE Class 11 Physics syllabus—built for quick revision and exam speed. Practice MCQs / objective questions / Physics quiz items with solutions and explanations, ideal for CBSE Boards, JEE Main, NEET, competitive exams, and Board exams.
These MCQs are suitable for international competitive exams—physics concepts are universal.
Navigation & pages: The full chapter has 600 MCQs in 6 parts (100 × 6). Part 1 contains 100 MCQs split across 10 pages—you’ll see 10 questions per page. Use the page numbers above to view the remaining questions.
What you will learn & practice
- Introduction to Thermal Properties of Matter
- Temperature and heat; measurement of temperature (thermometers, scales)
- Ideal gas equation and absolute temperature (overview)
- Thermal expansion of solids, liquids, and gases; thermal stress & strain
- Specific heat capacity and calorimetry
- Change of state and latent heat
- Heat transfer: conduction, convection, and radiation
- Newton’s law of cooling and thermal conductivity
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The full chapter includes 600 solved multiple-choice questions in 6 parts. This page (Part 1) gives the first 100 MCQs with answers and explanations to build your foundations. Explore more with: Class 11 Physics – Chapter Index, Class 11 – Subject Index, All Classes – MCQ Library.
- 👉 Total MCQs in this chapter: 600 (100 × 6 parts)
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FAQs on Thermal Properties of Matter ▼
▸ What are Thermal Properties of Matter MCQs in Class 11 Physics?
These are multiple-choice questions from Chapter 11 of NCERT Class 11 Physics – Thermal Properties of Matter. They cover key topics like thermal expansion, heat transfer, specific heat, and laws of thermodynamics.
▸ How many MCQs are available in this chapter?
There are a total of 600 MCQs from Thermal Properties of Matter. They are divided into 6 sets of 100 questions each for systematic practice and revision.
▸ Are these MCQs useful for NCERT, CBSE, and state board exams?
Yes, these MCQs are directly based on the NCERT/CBSE Class 11 Physics syllabus and are also useful for state board exams, helping students prepare for school tests and board exams effectively.
▸ Are these Thermal Properties of Matter MCQs important for JEE and NEET?
Yes, this chapter is highly important for JEE and NEET. Questions on calorimetry, conduction, convection, radiation, and specific heat frequently appear in these competitive exams.
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Yes, every MCQ comes with the correct answer and detailed explanations wherever necessary. This helps students understand concepts clearly instead of just memorizing answers.
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These MCQs are ideal for Class 11 students, board exam aspirants, and candidates preparing for JEE, NEET, NDA, UPSC, and other entrance or competitive exams requiring a strong Physics foundation.
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Yes, the MCQs range from basic theory-based questions to advanced numerical and application-based problems, covering the entire chapter comprehensively.
▸ Do these MCQs include questions on heat transfer methods?
Yes, the MCQs cover all modes of heat transfer – conduction, convection, and radiation – with numerical and conceptual problems commonly asked in board and competitive exams.
▸ Are topics like thermal expansion and calorimetry included in these MCQs?
Yes, important topics such as linear expansion, volume expansion, specific heat, latent heat, and calorimetry are fully included in these practice questions.
▸ Why are the 600 MCQs divided into 6 parts?
The MCQs are divided into 6 sets of 100 each to make practice more structured and less overwhelming. This allows students to learn step by step and track progress easily.
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