Chemical Engineering Archives

Chemical Engineering

Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.

7881. For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

Is independent of pressure

Increases with pressure

Decreases with pressure

Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction

✅ The correct answer is option B.

7882. A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction.

Less than

Equal to

More than

Equal to or more than

✅ The correct answer is option D.

7883. B.E.T. method can be used to determine the __________ of a porous catalyst.

Solid density

Pore volume

Surface area

All of the above

✅ The correct answer is option C.

7884. The rate constant of a chemical reaction increases by increasing the

Temperature

Pressure

Reactant’s concentration

None of these

✅ The correct answer is option A.

7885. An imbalanced chemical reaction equation is against the law of

Multiple proportion

Conservation of mass

Constant proportion

None of these

✅ The correct answer is option B.

7886. Velocity of a reaction depends upon the

Nature of the reactants

Concentration of the reactants

Temperature at which the reaction is carried

All of the above

✅ The correct answer is option D.

7887. Shift conversion reaction

Converts N₂ and H₂ into NH₃

Converts CO to CO₂ with steam

Is non-catalytic

Is highly exothermic

✅ The correct answer is option B.

7888. Given, 3H₂ + CO = CH₄ + H₂O, KP = 101.84 and, 4H₂ + CO₂ = CH₄ + 2H₂O, KP = 101.17 the KP for the reaction CO + H₂O = CO₂ + H₂ is

103.01

10-0.67

10-3.01

L00.67

✅ The correct answer is option D.

7889. In the gaseous phase ammonia formation reaction (N₂ + 3H₂ ⇋ 2NH₃), the value of the equilibrium constant depends on the

Total pressure of the system

Volume of the reactor

Temperature

Initial concentration of N₂ and H₂

✅ The correct answer is option C.

7890. The space time is equivalent to the holding time in a steady state mixed reactor for

Non-isothermal gas reaction

Variable fluid density systems

Constant fluid density systems

Gas reactions with changing no. of moles

✅ The correct answer is option C.