0
273
25
None of these
A. 0
Increased COP
Same COP
Decreased COP
Increased or decreased COP; depending upon the type of refrigerant
Number of intermediate chemical reactions involved
Pressure and temperature
State of combination and aggregation in the beginning and at the end of the reaction
None of these
The concentration of each component should be same in the two phases
The temperature of each phase should be same
The pressure should be same in the two phases
The chemical potential of each component should be same in the two phases
Zero
Unity
Infinity
Negative
Moisture free ice
Solid helium
Solid carbon dioxide
None of these
Escaping tendencies of the same substance in different phases of a system
Relative volatility of a mixture of two miscible liquids
Behaviour of ideal gases
None of these
[∂(G/T)/∂T] = - (H/T2)
[∂(A/T)/∂T]V = - E/T2
Both (A) and (B)
Neither (A) nor (B)
Negative
Zero
Infinity
None of these
Kp2/Kp1 = - (ΔH/R) (1/T2 - 1/T1)
Kp2/Kp1 = (ΔH/R) (1/T2 - 1/T1)
Kp2/Kp1 = ΔH (1/T2 - 1/T1)
Kp2/Kp1 = - (1/R) (1/T2 - 1/T1)
1
2
3
4
Increases
Decreases
Remain same
Decreases linearly
Freon-12
Ethylene
Ammonia
Carbon dioxide
Calorific value
Heat of reaction
Heat of combustion
Heat of formation
0
∞
+ve
-ve
-273
0
-78
5
Isothermal
Isobaric
Polytropic
Adiabatic
States that n1dμ1 + n2dμ2 + ....njdμj = 0, for a system of definite composition at constant temperature and pressure
Applies only to binary systems
Finds no application in gas-liquid equilibria involved in distillation
None of these
Low T, low P
High T, high P
Low T, high P
High T, low P
Matter
Energy
Neither matter nor energy
Both matter and energy
Van Laar
Margules
Gibbs-Duhem
Gibbs-Duhem-Margules
Increases
Decreases
Remains unchanged
May increase or decrease; depends on the substance
At low temperature and high pressure
At standard state
Both (A) and (B)
In ideal state
The values of (∂P/∂V)T and (∂2P/∂V2)T are zero for a real gas at its critical point
Heat transferred is equal to the change in the enthalpy of the system, for a constant pressure, non-flow, mechanically reversible process
Thermal efficiency of a Carnot engine depends upon the properties of the working fluid besides the source & sink temperatures
During a reversible adiabatic process, the entropy of a substance remains constant
3
4
5
6
Isothermal
Irreversible
Adiabatic
Reversible
Pressure
Temperature
Volume
Molar concentration
Zeroth
First
Second
Third
RT d ln P
RT d ln f
R d ln f
None of these
Pressure must be kept below 5.2 atm
Temperature must be kept above - 57°C
Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C
Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively
A = H - TS
A = E - TS
A = H + TS
None of these