Chemical Engineering Mcqs

Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as________________?

• (A)  P + F – C = 2
• (B)  C = P – F + 2
• (C)  F = C – P – 2
• (D)  P = F – C – 2

Answer

Submitted By :Ali Uppal

Entropy change in case of reversible adiabatic process is________________?

• (A)  Minimum
• (B)  Zero
• (C)  Maximum
• (D)  Indeterminate

Answer

Submitted By :Ali Uppal

Fundamental principle of refrigeration is based on the ______________ law of thermodynamics?

• (A)  Zeroth
• (B)  First
• (C)  Second
• (D)  Third

Answer

Submitted By :Ali Uppal

For a constant volume process_________________?

• (A)  dE = CpdT
• (B)  dE = CvdT
• (C)  dQ = dE + pdV
• (D)  dW = pdV

Answer

Submitted By :Ali Uppal

At absolute zero temperature, the _____________ of the gas is zero?

• (A)  Pressure
• (B)  Volume
• (C)  Mass
• (D)  None of these

Answer

Submitted By :Ali Uppal

No work is done by the system, when a reaction occurs at constant__________________?

• (A)  Volume
• (B)  Temperature
• (C)  Pressure
• (D)  None of these

Answer

Submitted By :Ali Uppal

If atmospheric temperature and dew point are nearly equal, then the relative humidity is_______________?

• (A)  Zero
• (B)  50%
• (C)  Almost 100%
• (D)  unpredictable

Answer

Submitted By :Ali Uppal

In a reversible process__________________?

• (A)  Tds = dE + dW
• (B)  dE – dW = Tds
• (C)  dW – dE = Tds
• (D)  Tds – dW + dE >0

Answer

Submitted By :Ali Uppal

A system in which there is exchange of energy but not of mass, is called a/an ____________ system?

• (A)  Isolated
• (B)  Open
• (C)  Insulated
• (D)  Closed

Answer

Submitted By :Ali Uppal

Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called ____________ solutions?

• (A)  Ideal
• (B)  Real
• (C)  Isotonic
• (D)  None of these

Answer

Submitted By :Ali Uppal