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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.

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.

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

A Large reactor followed by smaller one

B Smaller reactor followed by larger one

C Either of the arrangement A. or B. will give the same yield

D Data insufficient, can’t be predicted

Review Detailed Answer

Correct Answer: Either of the arrangement A. or B. will give the same yield

The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase ______________ times, if the temperature rises from 10 to 100°C?

A 256

B 512

C 112

D 612

Review Detailed Answer

Correct Answer: 512

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

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_________________?

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase ______________ times, if the temperature rises from 10 to 100°C?