Chemical Engineering Mcqs

Compound having large heat of formation is_____________________?

• (A)  More stable
• (B)  Less stable
• (C)  Not at all stable (like nascent O2)
• (D)  Either more or less stable; depends on the compound

Answer

Submitted By :Ali Uppal

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?

• (A)  Sublimation
• (B)  Fusion
• (C)  Transition
• (D)  Vaporisation

Answer

Submitted By :Ali Uppal

To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?

• (A)  Volume of the liquid phase is negligible compared to that of vapour phase
• (B)  Vapour phase behaves as an ideal gas
• (C)  Heat of vaporisation is independent of temperature
• (D)  All A ,

Answer

Submitted By :Ali Uppal

For a given substance at a specified temperature, activity is ______________ to fugacity?

• (A)  Directly proportional
• (B)  Inversely proportional
• (C)  Equal
• (D)  None of these

Answer

Submitted By :Ali Uppal

Linde gas liquefaction process employs cooling ____________________?

• (A)  By throttling
• (B)  By expansion in an engine
• (C)  At constant pressure
• (D)  None of these

Answer

Submitted By :Ali Uppal

In the reaction, C + O2 → CO2; ΔH = – 94 kcal. What is the heat content (enthalpy) of O2 ?

• (A)  -94 kcal
• (B)  > -94 kcal
• (C)  < – 94 kcal
• (D)  Zero

Answer

Submitted By :Ali Uppal

Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?

• (A)  1st
• (B)  Zeroth
• (C)  3rd
• (D)  None of these

Answer

Submitted By :Ali Uppal

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

• (A)  Isobaric
• (B)  Isothermal
• (C)  Adiabatic
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which of the following equations is used for the prediction of activity co-efficient from experiments ?

• (A)  Van Laar equation
• (B)  Margules equation
• (C)  Wilson’s equation
• (D)  All A,

Answer

Submitted By :Ali Uppal

Melting of ice is an example of an _____________ process?

• (A)  Adiabatic
• (B)  Isothermal
• (C)  Isometric
• (D)  None of these

Answer

Submitted By :Ali Uppal