Chemical Engineering

Energy Balances Terminology

Question 1
Marks : +2 | -2
Pass Ratio : 100%
What separates the system and surroundings?
Boundary
Temperature
Pressure
None of the mentioned
Explanation:
Boundary separates system and surroundings.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following does not change in the steady state system?
Flow in rate
Flow out rate
Accumulation
None of the mentioned
Explanation:
In a steady state system accumulation is zero.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
What do we call a process having constant volume throughout?
Isobaric
Isochoric
Isothermal
Adiabatic
Explanation:
Isochoric process has constant volume throughout.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is true for an open system?
Flow system
Non flow system
Cannot say
None of the mentioned
Explanation:
Since matter can come in or out in an open system, it is a flow system.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Internal energy is which of the following function?
Path function
State function
Cannot say
None of the mentioned
Explanation:
Since internal energy does not depend on path, it is a state function.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is a state function?
Work
Entropy
Heat
None of the mentioned
Explanation:
Entropy is a state function as it does not depend on the path of the process.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is a path function?
Work
Internal Energy
Entropy
None of the mentioned
Explanation:
Since work depends on the path of a process, it is a path function.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is correct about an isothermal process?
∆T = 0
dT = 0
∆T /= 0
None of the mentioned
Explanation:
In an isothermal process, temperature does not changes throughout the process, => dT = 0.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is true about the closed system?
Flow system
Non flow system
Cannot say
None of the mentioned
Explanation:
Since matter cannot come in or out in a closed system, it is a non-flow system.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following has a steepest P-V curve?
Adiabatic
Isothermal
Isobaric
None of the mentioned
Explanation:
Slope of an adiabatic curve is greater than that of isothermal and isobaric, so it has the steepest P-V curve.