Chemical Engineering — Test 189
Page 1 of 3
Question 1
Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is_______________?
Question 2
If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?
Question 3
High _____________ is an undesirable property for a good refrigerant?
Question 4
Which of the following liquid metals has the highest thermal conductivity ?
Question 5
Specific _____________ does not change during phase change at constant temperature and pressure?
Question 6
A change in state involving a decrease in entropy can be spontaneous, only if ____________________?
Question 7
For a constant volume process _____________ by the system is used only to increase the internal energy?
Question 8
Internal energy of an element at 1 atm and 25° C is ____________ kcal/kg.mole?
Question 9
Which of the following processes cannot be made reversible even under ideal condition of operation ?
Question 10
“Law of corresponding states” says that___________________?