7751. The enzyme which can catalyse the conversion of glucose to ethyl alcohol is
Invertase
Maltase
Diastase
Zymase
✅ The correct answer is option D.
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.
7752. For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.
Stirred tank
Tubular flow
Batch
Fixed bed
✅ The correct answer is option A.
7753. Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the
Activation energy
Equilibrium constant
Heat of reaction
None of these
✅ The correct answer is option A.
7754. Thermodynamic equilibrium constant in a system is affected by
Inerts
Pressure
Temperature
All of the above
✅ The correct answer is option C.
7755. A batch reactor is
Suitable for gas-phase reactions on commercial scale
Suitable for liquid phase reactions involving small production rate
Least expensive to operate for a given rate
Most suitable for very large production rate
✅ The correct answer is option B.
7756. A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by
Diffusion within the pellet
Reaction
External mass transfer
None of the above
✅ The correct answer is option A.
7758. Inversion of cane sugar is an example of
Unimolecular reaction with first order
Bimolecular reaction with second order
Bimolecular reaction with first order
Unimolecular reaction with second order
✅ The correct answer is option C.
7759. Reverse reaction in a chemical equilibrium is favoured by the
Removal of one of the products regularly
Increase in the concentration of oneof the products
Increase in the concentration of one of the reactants
None of these
✅ The correct answer is option B.
7760. Bulk diffusion in catalyst pore __________ with increase in pressure.
Increases
Decreases
Remains unchanged
Increases exponentially
✅ The correct answer is option B.