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NEET UG Thermodynamics — practice questions

Explore 95 free Thermodynamics questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Thermodynamics questions and exercises with answers

Showing questions 1–30 of 95.

Which kind of thermodynamic system exchanges both energy and matter with its surroundings?Read the answer and worked solution →Reactants kept in a sealed copper vessel form which type of system?Read the answer and worked solution →Reactants sealed inside a thermos flask are an example of which system?Read the answer and worked solution →What can a closed system exchange with its surroundings?Read the answer and worked solution →A state function is a quantity whose value depends on:Read the answer and worked solution →Which of these quantities is NOT a state function?Read the answer and worked solution →A process with no heat transfer between system and surroundings is called:Read the answer and worked solution →Joule found that a fixed amount of adiabatic work:Read the answer and worked solution →Under the IUPAC sign convention, work done on a system is taken as:Read the answer and worked solution →Using IUPAC signs, which equation states the first law of thermodynamics?Read the answer and worked solution →The first law of thermodynamics says the energy of an isolated system:Read the answer and worked solution →A process that runs infinitely slowly through a series of equilibrium states is:Read the answer and worked solution →For isothermal reversible expansion of n mol of ideal gas, the work w equals:Read the answer and worked solution →An ideal gas expands isothermally from 3 L to 8 L against a constant 2 atm. Heat absorbed?Read the answer and worked solution →At constant volume, the heat absorbed by a system is equal to:Read the answer and worked solution →Heat absorbed by a system at constant pressure measures the change in:Read the answer and worked solution →The gap between ∆H and ∆U is usually negligible for a reaction involving:Read the answer and worked solution →Which relation links ∆H and ∆U for a reaction of ideal gases?Read the answer and worked solution →In ∆H = ∆U + ∆ngRT, the term ∆ng stands for:Read the answer and worked solution →For N2(g) + 3H2(g) → 2NH3(g), what is the value of ∆ng?Read the answer and worked solution →For H2(g) + Cl2(g) → 2HCl(g), how do ∆H and ∆U compare?Read the answer and worked solution →A liquid has molar ∆vapH = 30.0 kJ/mol at 300 K. Treating the vapour as ideal, ∆vapU is about:Read the answer and worked solution →The coefficient C in the relation q = C∆T is called the:Read the answer and worked solution →A large heat capacity means a given heat input causes:Read the answer and worked solution →How much heat raises 50 g of water by 10 °C if its specific heat is 4.18 J/g °C?Read the answer and worked solution →A bomb calorimeter directly measures which quantity for a reaction?Read the answer and worked solution →Inside a bomb calorimeter, the sample is burnt in:Read the answer and worked solution →A calorimeter of heat capacity 15.0 kJ/K warms by 2.0 K during a reaction. Heat q of the reaction?Read the answer and worked solution →The standard state of a substance at a given temperature is its pure form at:Read the answer and worked solution →Standard enthalpies of fusion of solids are always:Read the answer and worked solution →

Worked practice questions

Which kind of thermodynamic system exchanges both energy and matter with its surroundings?

  1. Open system
  2. Adiabatic system
  3. Isolated system
  4. Closed system
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Correct answer: A. Open system

An open system lets both energy and matter cross its boundary, like reactants in an open beaker.

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Reactants kept in a sealed copper vessel form which type of system?

  1. Closed system
  2. Adiabatic system
  3. Isolated system
  4. Open system
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Correct answer: A. Closed system

A sealed conducting vessel stops matter from leaving but lets heat pass through its walls.

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Reactants sealed inside a thermos flask are an example of which system?

  1. Conducting system
  2. Closed system
  3. Isolated system
  4. Open system
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Correct answer: C. Isolated system

A thermos flask blocks the exchange of both heat and matter, so its contents form an isolated system.

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More Chemistry topics

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