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First Law of Thermodynamics and Its Applications questions with solutions
Practice Thermodynamics for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 42 questions
- MCQmediumThermodynamics
Consider the following statements about thermodynamics. A. The zeroth law of thermodynamics provides the concept of temperature. B. The first law of thermodynamics introduces the concept of internal energy. C. In an isothermal expansion of an ideal gas, the heat supplied is not equal to the work done by the gas. D. The product of an intensive variable and an extensive variable is extensive. E. The ratio of any extensive variable to mass is an extensive variable. Which combination contains only correct statements?
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JEE Mains 2026 5 April Morning Shift
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Heat is supplied to a diatomic ideal gas at constant pressure. Assuming the usual active translational and rotational degrees of freedom, what is the ratio ΔQ:ΔU:W for the process?
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JEE Mains 2026 2 April Morning Shift
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In an adiabatic process, which of the following statements is true?
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JEE Mains 2025 2 April Morning Shift
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1g of a liquid is converted to vapour at 3 × 10⁵ Pa pressure. If 10% of the heat supplied is used for increasing the volume by 1600 cm³ during this phase change, then the increase in internal energy in the process will be :
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JEE Mains24 January 2023Shift 1Morning Shift
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A diatomic gas (γ = 1.4) does 100 J of work in an isobaric expansion. The heat given to the gas is:
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JEE Mains 2024 08 Apr Evening Shift
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A thermodynamic process is shown in the P–V diagram. The pressure at A is 3 × 10⁴ Pa, the volume at A is 2 × 10⁻³ m³, the pressure at B is 8 × 10⁴ Pa, and the volume at D is 5 × 10⁻³ m³. In process AB, 600 J of heat is added to the system. The change in internal energy of the system in process AC would be:
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AIPMT 1991NEET Previous Year
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Figure shows two paths by which a gas goes from A to C. In process AB, 400 J of heat is added, and in process BC, 100 J of heat is added. Heat absorbed in process AC (straight line) is:
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AIPMT 2015NEET Previous Year
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In the P–V diagram, a gas goes A(2V₀,P₀) → B(3V₀,P₀) → C(3V₀,2P₀) → D(2V₀,2P₀) → E(V₀,2P₀). Find the total work done by the gas from A to E.
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JEE Mains 2025 23 Jan Evening Shift
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Heat energy of 735 J is given to a diatomic gas allowing the gas to expand at constant pressure. Each gas molecule rotates around an internal axis but does not oscillate. The increase in internal energy of the gas will be:
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JEE Mains31 January 2023Shift 2Evening Shift
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A diatomic gas (γ = 1.4) does 100 J of work when it is expanded isobarically. Then the heat given to the gas __________ J.
JEE Mains 202621 January Evening Shift
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