PPSC Chemistry Part I Physical Chemistry Online Test With Answers

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PPSC Chemistry Part I Physical Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following statements is not correct with respect to second law of thermodynamics. It helps in know the position of chemical equilibrium It helps to know the position of chemical equilibrium It determines the conversion of heat into work It is based on Nerst heat theorem
2 When two bodies have equality of temperature with a 3rd body they in turn have equality of temperature with each other. This is a statement of. First law of thermodynamics Zeroth law of thermodynamics Second law of thermodynamics Third law of thermodynamics
3 Regarding the internal energy of the molecules, which one of the following statements in not correct. It is the sum of vibration rotational and electronic energy It is a path function It is a state function It is an exact differential
4 Which of the following enthalpies is always negative. Enthalpy of melting Enthalpy of combustion Enthalpy of solution Enthalpy of formation
5 Which of the following reactions have small enthalpy change. NaOH with HCl NaOH with CH3 COOH HCl with NH4 OH None of these
6 The variation of enthalpy of reaction with temperature is given by. Hesse's law Clasisus Clapayron equation Kirchoffs equation Arrhenious equation.
7 Which of the following statements is not related with joule Thomson effect. Joule Thomson is 0 isenthalpic in nature H2 and He show heating effect All gases show change in temperature The change in temperature depends on initial temperature and nature of the gas. Joule Thomson coefficient is defined as meo= (op/oT)H
8 Which of the following is always true for the adiabatic expansion of gas. Temperature rises Pressure rises W=0 Q = 0
9 Which of the following statement is not related to applications and limitations of first law of thermodynamics. This law explains why chemical reactions proceed to completion It is silent about the source of heat It is silent about the direction of heat It does not tell us about the reversible process.
10 In an isochoric process Energy remains constant Volume remains constant Pressure remains constant Temperature remains constant
11 A process in which no heat enters leaves the system is called. Isochoric Isobaric Adiabatic Reveraible
12 Which of the following is not an extensive property. Work Entropy Free energy Volume
13 Which of the following is not an intensive property. Melting point Refractive index Entropy Density
14 Any property whose magnitude is independent of the amount of substance present is called a/an Extensive property Colligative property Structural propety Intensive property
15 A closed system is one which can exchange with surrounding. Matter but not energy Energy but not matter Both matter and energy Neither matter nor energy
16 A system which can exchange energy as well as natter with its surrounding is said to be a/an Closed system Inert system Open system All of above
17 Branch of chemistry that deals with the basic principles governing energy changes during various processes is called. Wave mechanics Chemical kinetics Chemical thermodynamics Electro chemistry
18 The compound contains two types of X and Y its crystal structure is a cubic lattice with X-atoms at the corners of the unit cells and Y-atom t the body centre, The simplest formulae of this compound is. X2Y XY XY2 X8Y
19 In sodium chloride type lattice, the ratio of coordination number of cation to anion is. 6:6 7:7 4:8 4:4
20 The particle would be stationary in a lattice only at. 273 K 0 K 298 K 373 K
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