PPSC Physics Chapter 3 Thermal Properties of Matter With Answers

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PPSC Physics Chapter 3 Thermal Properties of Matter

Sr. # Questions Answers Choice
1 When a fluid in a cylinder expands through a distance 'd' against a piston of area 'A' which is exerting a constant pressure 'P' the work done is equal by. PAD PA/d Pd/A Pd/A2
2 When ever a system is made to complete a cyclic process the work done during the complete cycle. Is zero Is negative Is positive Depends upon the path followed
3 The ratio between the energy dissipated in some process and the heat that appears as a result is the Specific heat Mechanical equivalent of heat Kilocalories Triple point
4 The process in which no heat enters or leaves the system is called. Isdobaric Isochoric Isothermal Adiabatic
5 The number of molecules or atoms in a specific volume of a gas is independent of their Volume Pressure Size Temperature
6 Which law states that two given samples of an ideal gas at the same temperature pressure and volume contain the same number of molecules. Charles law Avogadro's Boyles law Boizmann law
7 How many calories of heat are required to evaporate completely 1 g of ice at 0 oC 480 calories 720 calories 940 calories 1170 calories
8 The change in entropy for any reversible cycle is identically Infinite Positive Negative Zero
9 The term used for heat capacity per unit mass is. Latent heat Specific heat Energy density Specific energy
10 What is a thermal properly of a material that determines the quantity of energy required to change the phase of a unit mass of that substance. Specific heat Latent heat Internal energy Specific energy
11 On which parameter internal energy of an ideal gas depends upon. Volume Mass Pressure Temperature
12 Most cooking involves Adiabatic process Isothermal process Isobaric process Isochoric process
13 A 4 kJ mass of copper of specific heat capacity of 400 J kg-1k-1 is heated for 160 s by a heater of power 200 W what is the rise in temperature. 10 K 16 K 100 K 160 K
14 A cup of coffee at 80 oC is left to cool to 30 oc if the heat capacity of the cup and coffee is 2.0 kJ k-1 how much heat is released during the cooling. 0.04 kJ 100 KJ 60 kJ 160 kJ
15 The specific heat capacity of a substance is the amount of heat required to. Raise its temperature by 1 K Raise the temperature of 1 kg of the substance by 1 K Melt 1 kg of the substance Boil 1 kg of the substance
16 When heat a supplied to a metallic sphere which one of the following changes will occur. the mass of the sphere increases The volume of the sphere increases The density of the sphere increases The internal energy of the sphere increases
17 In which thermodynamic process enthalpy of the system remains constant. Isenthalpic process Isolated process Isobaric process Isochoric process
18 Which kind of thermodynamic process is defined as with no heat transfer into or out of a system i.e. Q =0 Isobaric process Isochoric process Isothermal process Adiabatic process
19 If a gas does 10 J of external work white expanding then the change in internal energy is equal to. 0 J 10 J -10 J 100 J
20 On what factor the internal energy of a thermodynamic system depend upon. History State Process Surroundings
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