19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is not an intensive property?
Which of the following is a state variable?
Which of the following is a state function and also an extensive property?
In endothermic reactions,
What is the entropy change in JK–1 mol–1 when one mole of ice is converted into water at 0°C? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol–1 at 0°C)
For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by. (NEET-II 2016)
Consider the following liquid-vapour equilibrium. Liquid ⇌ Vapour Which of the following relations is correct? (NEET-I 2016) (a) v H dln P dT T (b) v H d ln P dT RT (c) v H dln G dT RT (d) v H d ln P dT RT
The work done during the expansion of a gas from a volume of 4 dm3 to 6 dm3 against a constant external pressure of 3 atm is (1 L atm = 101.32J) (2004)
Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be (Mains 2010)
Which of the following can be used to define the state of a system?
Which of the following is not a state function?
Which of the following is a path function?
Which of the following is intensive property?
Under isothermal conditions, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is [Given that 1 L bar = 100 J] (NEET 2019)
Which of the following is true about isolated system?
The bond dissociation energies of X2, Y₂ and XY are in the ratio of 1 : 0.5 : 1. ∆H for the formation of XY is – 200 kJ mol–1. The bond dissociation energy of X2 will be (NEET 2018)
System and surroundings together constitute
Which of the following is not a state function?
Which of the following is an example of open system?
Thermodynamics is not concerned about____.
Closed system can exchange (with surroundings)
Which of the following quantities is not a state function?
The volume of gas is reduced to half from its original volume. The specific heat will____.
A reaction has ∆H = – 33 kJ and ∆S = +58 J/K. This reaction would be :
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