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CBSE
Class 11 Chemistry
Thermodynamics Chapter 6
Quiz 1
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Which of the following relations is correct for an adiabatic process?
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P∆V = 0
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∆U = q
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∆q = 0
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q = + w
A system absorbs 500 kJ heat and performs 250 kJ work on the surroundings. The increase in internal energy of the system is:
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250 kJ
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750 kJ
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500 kJ
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1000 kJ
The enthalpies of all elements in their standard states are
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negative
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zero
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infinite
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positive
If q amount of heat is supplied to a system, the work done by the system is w . What is the change in internal energy of the system?
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ΔU = q - w
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ΔU = q / w
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ΔU = q + w
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ΔU = q x w
The difference between heats of reaction at constant pressure and constant volume for the reaction:
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-3RT
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R
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2RT
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2R
The internal energy of a system is
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Kinetic as well as potential energy
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Potential energy only
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Unpredictable
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Kinetic energy only
The process in which no exchange of heat takes place between system and surrounding is known as
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Adiabatic process
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Isothermal process
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Isobaric process
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Isochoric process
Evaporation of water is:
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An exothermic change.
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A process accompanied by chemical reaction.
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An endothermic change.
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A process in which no heat changes occur.
Which of the following is a state function?
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Heat
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Internal energy
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Pressure
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Volume
Tea placed in a closed vessel is an example of
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isolated system
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closed system
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insulated system
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open system
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