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The heat required to raise the temperature of a body by 1 K is called

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Important Questions on Chemical Thermodynamics

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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
ΔU is equal to:
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Which of the following options is an intensive property of a system?
MEDIUM
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 3 7 . 0 ∘ C. As it does so, it absorbs 208 J of heat. The values of q and w for the process will be 
(R = 8.314 J/mol K) (ln7.5 = 2.01)
MEDIUM
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
The molar enthalpy change for H2Ol⇌H2Og at 373 K and 1 atm is 40 kJ/mol . Assuming ideal behaviour, the internal energy change for vaporization of 1 mol of water at 373 K and 1 atm in kJ mol-1 is:
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Identify the correct set of intensive properties from the following
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
A gas undergoes change from state A to state B. In this process, the heat absorbed and work done by the gas is 5 J and 8 J, respectively. Now gas is brought back to A by another process during which 3 J of heat is evolved. In this reverse process of B to A.
HARD
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
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The above P-V diagram represents the thermodynamic cycle of an engine, operating with an ideal mono-atomic gas. The amount of heat, extracted from the source in a single cycle, is:
MEDIUM
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
The correct option for free expansion of an ideal gas under adiabatic condition is
MEDIUM
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
During a reversible adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio CpCV for the gas is
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
For an adiabatic change in a system, the condition which is applicable will be
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
During compression of a spring the work done is 10 kJ and 2 kJ escaped to the surroundings as heat. The change in internal energy, ΔUin kJ is:
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
In a closed insulated container, a liquid is stirred with a paddle to increase its temperature. In this process, which of the following is true?
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Following figure shows two processes A and B  for a gas. If ∆QA and ∆QB are the amount of heat absorbed by the system in two cases, and ∆UA and ∆UB are changes in internal energies, respectively, then:
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
The first law of thermodynamics for isothermal process is
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :
MEDIUM
Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
365 calorie heat is required to evaporate one gram water at 100C∘. If the work done by the system is 651.3 calorie, then the increase in internal energy per mole of water will be
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Which of the following can be considered as the definition/principle of energy?
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Thermodynamic properties are divided into two broad types: intensive properties and extensive properties. Which of the following is NOT an intensive property?
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Which of the following is NOT an intensive property?
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Chemistry>Physical Chemistry>Chemical Thermodynamics>Enthalpy and Enthalpy Change
Among the following, the set of parameters that represents path functions, is:
i) q+w
ii) q
iii) w
iv) H-TS