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MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The correct option for free expansion of an ideal gas under adiabatic condition is. (NEET 2020)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Entropy is a measure of

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following statements is not correct?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The respective examples of extensive and intensive properties are

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Enthalpy change for the reaction, 4H(g)  → 2H₂(g) is – 869.5 kJ. The dissociation energy of H–H bond is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following reactions define o f G ? (a) diamond C O g CO g → (b) H g F g HF g → (c) H P O H O 2H PO → (d) SO g O g SO g →

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The standard free energy change  G  is related to K (equilibrium constant) as

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

2 moles of ideal gas at 27°C temperature is expanded reversibly from 2 lit. to 20 lit. find entropy change. (R = 2 cal/mol K)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

In which of the following cases, the reaction is spontaneous at all temperatures ?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

H and E  for the reaction, Fe O s 3H g 2Fe s H O l → at constant temperature are related as (a) H E (b) H E RT (c) H E RT (d) H E 3RT

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Entropy of the universe is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The densities of graphite and diamond at 298 K are 2.25 and 3.31 g cm–3, respectively. If the standard free energy difference is equal to 1895 J mol–1, the pressure at which graphite will be transformed into diamond a…

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

A reaction occurs spontaneously if (2005)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Cell reaction is spontaneous when (a) G is negative (b) G is positive (c) red G is positive (d) red G is negative

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following processes is a non-spontaneous process?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which law states that entropy of all pure crystalline solids is zero at absolute zero?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

For irreversible expansion of an ideal gas under isothermal condition, the correct option is (NEET 2021)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

It is impossible for a reaction to take place if (a) H is +ve and  S  is +ve (b) H is –ve and  S  is +ve (c) H is +ve and  S  is –ve (d) H is –ve and  S  is –ve

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following processes is irreversible?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

In an isothermal expansion of an ideal gas

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

A system absorbs 10 kJ of heat and does 4 kJ of work. The internal energy of the system

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Pick out the wrong statement

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following processes is reversible?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

In thermodynamics a process is called reversible when

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

A thermally isolated gaseous system can exchange energy with the surroundings. The mode of energy may be

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