Chemical Engineering Mcqs

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?

• (A)  Fusion
• (B)  Vaporisation
• (C)  Transition
• (D)  None of these

Answer

Submitted By :Ali Uppal

Heat is added at constant temperature in an ideal ______________ cycle?

• (A)  Stirling
• (B)  Brayton
• (C)  Rankine
• (D)  None of these

Answer

Submitted By :Ali Uppal

A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?

• (A)  Less than
• (B)  More than
• (C)  Equal to or higher than
• (D)  Less than or equal to

Answer

Submitted By :Ali Uppal

“If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is ______________ law?

• (A)  Hess’s
• (B)  Kirchoff’s
• (C)  Lavoisier and Laplace
• (D)  None of these

Answer

Submitted By :Ali Uppal

Gibbs free energy of a pure fluid approaches _____________ as the pressure tends to zero at constant temperature?

• (A)  Infinity
• (B)  Minus infinity
• (C)  Zero
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which is a state function ?

• (A)  Specific volume
• (B)  Work
• (C)  Pressure
• (D)  Temperature

Answer

Submitted By :Ali Uppal

The quantitative effect of temperature on chemical equilibrium is given by the____________________?

• (A)  Van’t-Hoff equation
• (B)  Le-Chatelier’s principle
• (C)  Arrhenius equation
• (D)  None of these

Answer

Submitted By :Ali Uppal

The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = – 22.4 kcal, is__________________?

• (A)  Endothermic
• (B)  Exothermic
• (C)  Isothermal
• (D)  Adiabatic

Answer

Submitted By :Ali Uppal

Consider the reaction, C + O2 ⇌ CO2; ΔH = – 94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2 ?

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

Answer

Submitted By :Ali Uppal

If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as__________________?

• (A)  Solubility increases as temperature increases
• (B)  Solubility increases as temperature decreases
• (C)  Solubility is independent of temperature
• (D)  Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Answer

Submitted By :Ali Uppal