MCQ Class 11 Chemistry Chapter 5 Thermodynamics Advertisement MCQ’s For All Chapters – Chemistry Class 11th 1. The first law of thermodynamics is based on the principle of:Conservation of massConservation of energyConservation of volumeConservation of pressureQuestion 1 of 202. For an isolated system, the values of q and w are:q = 1 and w = 1q = 0 and w = 0q = wq = −wQuestion 2 of 203. At constant volume, the change in internal energy is equal to:qpqVp∆V∆HQuestion 3 of 204. Pressure-volume work is represented by:w = p∆Tw = −pex∆Vw = q + ∆Uw = ∆H − ∆UQuestion 4 of 205. During compression of a gas, the work done on the system is:PositiveNegativeZeroAlways equal to heatQuestion 5 of 206. A process that can be reversed by an infinitesimal change is called:IrreversibleAdiabaticReversibleIsolatedQuestion 6 of 207. A reversible process proceeds:InstantlyInfinitely slowly through equilibrium statesWithout any pressureOnly at constant volumeQuestion 7 of 208. Expansion of a gas into a vacuum is called:Isothermal expansionFree expansionReversible expansionConstant-pressure expansionQuestion 8 of 209. During free expansion of an ideal gas, the work done is:MaximumMinimum but not zeroZeroEqual to internal energyQuestion 9 of 2010. Enthalpy is represented by:UHqCQuestion 10 of 2011. The relationship between enthalpy and internal energy is:H = U − pVH = U + pVH = pV − UH = U/qQuestion 11 of 2012. At constant pressure, the heat absorbed by a system is equal to:∆U∆H∆V∆TQuestion 12 of 2013. For an exothermic reaction, ∆H is:PositiveNegativeZeroAlways infiniteQuestion 13 of 2014. For an endothermic reaction, ∆H is:NegativePositiveZeroAlways constantQuestion 14 of 2015. Which property depends on the quantity of matter present?TemperaturePressureVolumeDensityQuestion 15 of 2016. Which of the following is an intensive property?MassVolumeInternal energyTemperatureQuestion 16 of 2017. The heat capacity of a system is represented by:CHURQuestion 17 of 2018. The relation between heat capacity and temperature change is:q = C∆Tq = C/∆Tq = ∆T/Cq = C + ∆TQuestion 18 of 2019. Which calorimeter is used to measure heat absorbed at constant volume?Water calorimeterBomb calorimeterGas calorimeterIce calorimeterQuestion 19 of 2020. Hess’s law is based on the fact that enthalpy is a:Path functionState functionConstant quantityIntensive propertyQuestion 20 of 20 Loading...
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