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Thermodynamics ...

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  • Question 1
    4 / -1

    The ratio of its final volume to initial volume will be

  • Question 2
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    A gas expands with temperature according to the relation V = kT2/3. What is the done when the temperature changes by 30°C

  • Question 3
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    A gas undergoes a change of state during which 100 J of heat is supplied to it and it does 20 J of work. The system is brought back to its original state through a process during which 20J of heat is released by the gas. The work done by the gas in the second process is

  • Question 4
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    One mole of monoatomic ideal gas is taken along two cyclic processes E → F → G → E and E → F → H → E as shown in the p-V diagram. The processes involved are purely isochoric, isobaric, isothermal or adiabatic. Match the paths in List I with the magnitudes of the work done in List II and select the correct answer using the codes given below the lists.

  • Question 5
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    A centigrade and a Fahrenheit thermometer are dipped in boiling water. Thewater temperature is lowered until the Fahrenheit thermometer registers 140o. What is the fall in temperature registered by centigrade thermometer?

  • Question 6
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    The apparent coefficient of expansion of a liquid when heated in a copper vesselis C, and when heated in a silver vessel is S. If A is linear coefficient of expansionof copper, then the linear coefficient of expansion of silver is

  • Question 7
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    Equal masses of two liquids A and B contained in vessels of negligible heatcapacity are supplied heat at the same rate. The temp. time graphs for the two liquids are shown in Fig. If S represents sp. Heat and L represents latent heat of liquid, then

  • Question 8
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    A gas is expanded from volume V0 to 2V0 under three different processes. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1, ΔU2 and ΔU3 be the change in internal energy of the gas in these three processes. Then

  • Question 9
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    Fig. shows two processes a and b for a given sample of a gas. If ∆Q1, ∆Q2 are the amounts of heat absorbed by the system in the two cases; and ∆U1, ∆U2 are changes in internal energies respectively, then.

  • Question 10
    4 / -1

    In the indicator diagram, Fig., Ta, Tb, Tc, Td represent temps of gas at A, B, C, D respectively. Which of the following is correct relation?

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