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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Enzymes are destroyed, when the_______________?

A Temperature is very high

B Reactant’s concentration is very high

C Reactant’s concentration is very low

D Reaction rate is independent of the reactant’s concentration

Review Detailed Answer

Correct Answer: Temperature is very high

Ionic reactions occur in____________________?

A Solid state only

B Liquid state only

C Solutions

D Any state

Review Detailed Answer

Correct Answer: Solutions

With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction_________________?

A Decreases

B Increases

C Remain unaffected

D Increases linearly with temperature

Review Detailed Answer

Correct Answer: Decreases

In a chemical reaction, _____________________ are conserved?

A Ions

B Masses

C Atoms

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

Sulphuric acid is used as a catalyst in the_______________?

A Hydrogenation of oils

B Gas phase oxidation of SO2 in chamber process

C Alkylation of hydrocarbons

D None of these

Review Detailed Answer

Correct Answer: Alkylation of hydrocarbons

An autothermal reactor is_________________?

A Most suitable for a second order reaction

B Most suitable for a reversible reaction

C Completely self-supporting in its thermal energy requirements

D Isothermal in nature

Review Detailed Answer

Correct Answer: Completely self-supporting in its thermal energy requirements

Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?

A Increasing the concentration of one of the reactants

B Increasing the concentration of one or more of the products

C Removal of at least one of the products at regular interval

D None of these

Review Detailed Answer

Correct Answer: Increasing the concentration of one or more of the products

For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?

A -rA = (k . PA . PB)/(1 + KAPA + KPPP)

B -rA = (k . PA

C -rA = (k . PA . PB)/(1 + KAPB + KBPB . KPPP)

D -rA = (k . PA . PB)/(1 + KAPA)

Review Detailed Answer

Correct Answer: -rA = (k . PA . PB)/(1 + KAPA + KPPP)

At a given temperature, K1, K2 and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g), CO(g) + H2O(g) ⇌ CO2(g) + H2(g) CH4(g) + 2H2O(g) ⇌ CO2(g) + 4H2(g) Then K1, K2 and K3 are related as ?

A K3 = K1.K2

B K3 = (K1.K2)0.5

C K3(K1+K2)/2

D K3 = (K1.K2)2

Review Detailed Answer

Correct Answer: K3 = K1.K2

For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a_________________?

A Batch reactor is preferred over a single CSTR for high yield

B Tubular reactor is preferred over a single CSTR for high yield

C Both A. and B.

D Single CSTR is the most suitable

Review Detailed Answer

Correct Answer: Both A. and B.

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Enzymes are destroyed, when the_______________?

Ionic reactions occur in____________________?

With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction_________________?

In a chemical reaction, _____________________ are conserved?

Sulphuric acid is used as a catalyst in the_______________?

An autothermal reactor is_________________?

Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?

For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?

At a given temperature, K1, K2 and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g), CO(g) + H2O(g) ⇌ CO2(g) + H2(g) CH4(g) + 2H2O(g) ⇌ CO2(g) + 4H2(g) Then K1, K2 and K3 are related as ?

For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a_________________?