Q.1
The equation of the second law of thermodynamics says that____
  • a) Total change in entropy is always zero
  • b) We cannot find entropy for an irreversible process
  • c) Entropy change is defined as the heat added in an irreversible process
  • d) Entropy is a state process
Q.2
Which is the correct result according to the second law of thermodynamics?
  • a) Total change in entropy is always zero
  • b) Total change in entropy in a reversible process is always zero
  • c) Total change in entropy in an irreversible process is always zero
  • d) Total change in entropy for an irreversible process is negative
Q.3
For a block of ice on a plate, second law of thermodynamics says that____
  • a) The plate will get hotter
  • b) Ice will get cooler
  • c) Cannot give conclusive direction
  • d) Ice will melt
Q.4
First law when expressed in terms of entropy takes the form_____
  • a) T ds = de – p dv
  • b) T ds = dh – p dv
  • c) T ds = de + p dv
  • d) T ds = dh + p dv
Q.5
For a calorically perfect gas, entropy is not________
  • a) State function
  • b) Conserved in a reversible process
  • c) A function of two thermodynamic variables
  • d) Zero always
Q.6
An isentropic process is restrictive and is not feasible in real life.
  • a) False
  • b) True
Q.7
Flow over a rocket outside the boundary layer is isentropic.
  • a) False
  • b) True
0 h : 0 m : 1 s