NEET Physics: specific heat capacity Practice Questions
13 free multiple-choice questions on specific heat capacity (Properties of Solids and Liquids) for NEET Physics, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. The SI unit for specific heat capacity is the same as the SI unit for which physical quantity?
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Correct answer: D — Joule per kilogram per Kelvin
Specific heat capacity (c) is defined as the heat energy per unit mass per unit temperature change. The SI unit is J/(kg·K) (Joule per kilogram per Kelvin).
Q2. Which property is defined as the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius?
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Correct answer: D — Specific Heat Capacity
Specific heat capacity is the measure of the amount of heat energy required to change the temperature of a unit mass of a substance by one degree Celsius.
Q3. Which physical quantity is used to express the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius?
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Correct answer: D — Specific Heat Capacity
Specific heat capacity (specific heat) is defined as the amount of heat energy required to raise the temperature of one unit mass of a substance by one degree (Celsius or Kelvin).
Q4. Which type of energy is primarily associated with the change in the internal energy of a substance when its temperature is changed?
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Correct answer: D — Thermal Energy
Thermal energy is the energy associated with the random motion of the molecules within a substance, which manifests as a change in the substance's temperature.
Q5. Which of the following physical quantities is defined as the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius?
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Correct answer: C — Specific Heat Capacity
Specific heat capacity (c) is defined as the amount of heat energy required to raise the temperature of one unit mass of a substance by one unit degree (Celsius or Kelvin).
Q6. A substance with a higher specific heat capacity will require more energy to change its temperature by a given amount compared to a substance with a lower specific heat capacity. True or False?
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Correct answer: C — True
Since Q = mcΔT, if c is higher, Q will be higher for the same mass and temperature change, meaning more energy is required.
Q7. If 500 J of heat is supplied to 1 kg of water, and the temperature of the water increases by 10°C, what is the specific heat capacity of water?
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Correct answer: C — 50 J/kg°C
Using the formula Q = mcΔT, we have 500 = 1 × c × 10. Therefore, c = 500 / 10 = 50 J/kg°C.
Q8. Water has a high specific heat capacity. This property implies that water can absorb a large amount of heat energy without a large change in its own temperature. Why?
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Correct answer: D — Water has a high capacity to store heat energy per unit mass.
High specific heat capacity means that a large amount of heat is required to change the temperature of the substance by a certain amount.
Q9. Which of the following statements accurately describes the significance of specific heat capacity in thermal physics?
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Correct answer: D — It measures the amount of energy required to raise the temperature of a substance by one degree.
Specific heat capacity (c) is the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius (or Kelvin).
Q10. The formula relating heat (Q), mass (m), specific heat capacity (c), and the change in temperature (ΔT) is:
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Correct answer: D — Q = m · c · ΔT
The fundamental equation for heat transfer based on specific heat capacity is Q = mcΔT, where Q is heat, m is mass, c is specific heat capacity, and ΔT is the change in temperature.
Q11. The relationship between heat, mass, specific heat capacity, and temperature change is given by the formula:
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Correct answer: C — Q = mcΔT
The formula Q = mcΔT describes the principle of calorimetry, where Q is the heat energy, m is mass, c is specific heat capacity, and ΔT is the change in temperature.
Q12. Which substance generally has a higher specific heat capacity?
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Correct answer: D — Water
Water generally has a relatively high specific heat capacity compared to many common metals (like Iron or Copper) for the same mass, meaning it requires more energy to change its temperature.
Q13. The unit of specific heat capacity is the same as the unit of which physical quantity?
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Correct answer: A — Joule per kilogram per Kelvin
Since Specific Heat Capacity (c) is defined as Energy (Joule) per Mass (kg) per Temperature change (K or °C), the SI unit is J/(kg·K), which is equivalent to J/(kg·°C).
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