Related InterviewSolutions

• In the following questions ,a statement of assertions(A) is given followed by a corresponding statement of reason (R) just below the statements  mark the correct answer as(a)If both (A) and (R)are true and (R) is the true explanation of (A).(b) If both (A) and (R)are true but (R) is not the true explanation of (A).(c ) If (A) is true but (R) is false.(d) If both (A) and (R) is false.Assertion (A): For a particular reaction heat of combustion at constant pressure (qp) is always greater than that of constant volume (qv).Reason (R): Combustion reactions are invariably accompanied by increase in the number of moles.
• In the following questions ,a statement of assertions(A) is given followed by a corresponding statement of reason (R) just below the statements  mark the correct answer as(a)If both (A) and (R)are true and (R) is the true explanation of (A).(b) If both (A) and (R)are true but (R) is not the true explanation of (A).(c ) If (A) is true but (R) is false.(d) If both (A) and (R) is false.Assertion (A): The enthalpy of formation of gaseous oxygen molecules a 298K and under a pressure of 1 atm is zero.Reason (R): The entropy of formation of gaseous oxygen molecules under the same conditions is zero.
• Mention entropy change (ΔS) for : (i) spontaneous process (ii) non-spontaneous process (iii) at equilibrium.
• Define the term system and surroundings. Explain the different types of system.
• Give relation between Cp and Cv
• State First law of thermodynamics. Give its mathematical expression
• Write the mathematical statement of first law of thermodynamics.
• Deduce the mathematical expression of first law of thermodynamics for the following processes :(1) Isothermal process (2) Isobaric process (3) Isochoric process (4) Adiabatic process.
• Classify the following properties as intensive or extensive : (i) Temperature (ii) Density (iii) Enthalpy (iv) Mass (v) Energy (vi) Refractive index (vii) Pressure (viii) Viscosity (ix) Volume (x) Weight.
• Write one example each of extensive and intensive properties.