Explore topic-wise MCQs in Chemical Engineering.

This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the enthalpy change of a reaction at 90oC, if the enthalpy of reactant at 90oC and 25oC are 60 J and 25 J, and enthalpy of product at 90oC and 25oC are 80 J and 10 J, and the enthalpy change of reaction at 25oC is 5 J?

A. 10 J
B. 50 J
C. 110 J
D. 150 JView answer
Answer» D. 150 JView answer
Discussion
2.

What is the enthalpy change of a reaction at 30oC, if the enthalpy of reactant at 30oC and 25oC are 18 J and 15 J, and enthalpy of product at 30oC and 25oC are 10 J and 8 J, and the enthalpy change of reaction at 25oC is 45 J?

A. 10 J
B. 25 J
C. 50 J
D. 100 JView answer
Answer» D. 100 JView answer
Discussion
3.

What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 22 J and 15 J, and enthalpy of product at 35oC and 25oC are 10 J and 5 J, and the enthalpy change of reaction at 25oC is 36 J?

A. 12 J
B. 24 J
C. 36 J
D. 48 JView answer
Answer» E.
Discussion
4.

What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 18 J and 10 J, and enthalpy of product at 35oC and 25oC are 12 J and 8 J, and the enthalpy change of reaction at 25oC is 15 J?

A. 9 J
B. 14 J
C. 22 J
D. 27 JView answer
Answer» E.
Discussion
5.

What is the enthalpy change of a reaction at 45oC, if the enthalpy of reactant at 45oC and 25oC are 10 J and 6 J, and enthalpy of product at 45oC and 25oC are 15 J and 8 J, and the enthalpy change of reaction at 25oC is 10 J?

A. 14 J
B. 21 J
C. 27 J
D. 34 JView answer
Answer» C. 27 J
Discussion
6.

What is the enthalpy of reaction forC6H6 -> 3C2H2, if the conversion of C6H6 is 80%, and heat of formation of C6H6, and C2H2 are 24 J, and 8 J?

A. 0
B. 2.4 J
C. 4.8 J
D. 5.6 JView answer
Answer» D. 5.6 JView answer
Discussion
7.

What is the enthalpy of reaction for CO2 + 4H2 -> 2H2O + CH4, if the conversion of CO2 is 50%, and heat of formation of CO2, H2, H2O, and CH4 are 6 J, 0, 4 J and 10 J?

A. 2 J
B. 5 J
C. 6 J
D. 9 JView answer
Answer» E.
Discussion
8.

What is the enthalpy of reaction for C2H4 + 3O2 -> 2CO2+ 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?

A. 0
B. 2 J
C. 5 J
D. 10 JView answer
Answer» E.
Discussion
9.

What is the enthalpy of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?

A. 0
B. 2 J
C. 4 J
D. 6 JView answer
Answer» C. 4 J
Discussion
10.

What is the enthalpy of reaction for C + O2 -> CO2, if the conversion of C is 50%, and heat of formation of C, O2, and CO2 are 0, 0 and 10 J.

A. 5 J
B. 10 J
C. 15 J
D. 20 JView answer
Answer» B. 10 J
Discussion
11.

What is the heat of reaction for C6H6 + 3H2 -> C6H12, if heat of formation of C6H6, H2, and C6H12 are 25 J, 5 J and 50 J respectively?

A. 10 J
B. 20 J
C. 30 J
D. 35 JView answer
Answer» B. 20 J
Discussion
12.

What is the heat of reaction for C2H4 + 3O2 -> 2CO2 + 2H2O, if heat of formation of C2H4, O2, CO2, and H2O are 10 J, 5 J, 6 J and 2 J respectively?

A. -4 J
B. -2 J
C. 0
D. 4 JView answer
Answer» B. -2 J
Discussion
13.

What is the heat of reaction for 2H2 + O2 -> 2H2O, if heat of formation of H2, O2, and H2O are 2 J, 5 J, and 10 J respectively?

A. 2 J
B. 5 J
C. 8 J
D. 11 JView answer
Answer» E.
Discussion
14.

What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if heat of formation of CH4, O2, CO2 and H2O are 10 J, 5 J, 6 J, and 12 J respectively?

A. -10 J
B. 10 J
C. -20 J
D. 20 JView answer
Answer» C. -20 J
Discussion
15.

WHAT_IS_THE_ENTHALPY_OF_REACTION_FORC6H6_->_3C2H2,_IF_THE_CONVERSION_OF_C6H6_IS_80%,_AND_HEAT_OF_FORMATION_OF_C6H6,_AND_C2H2_ARE_24_J,_AND_8_J??$

A. 0
B. 2.4 J
C. 4.8 J
D. 5.6 J
Answer» D. 5.6 J
Discussion
16.

What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 18 J and 10 J, and enthalpy of product at 35oC and 25oC are 12 J and 8 J, and the enthalpy change of reaction at 25oC is 15 J
A. 9 J
B. 14 J
C. 22 J
D. 27 J
Answer» E.
Discussion
17.

What is the enthalpy change of a reaction at 45oC, if the enthalpy of reactant at 45oC and 25oC are 10 J and 6 J, and enthalpy of product at 45oC and 25oC are 15 J and 8 J, and the enthalpy change of reaction at 25oC is 10 J?$

A. 14 J
B. 21 J
C. 27 J
D. 34 J
Answer» C. 27 J
Discussion
18.

What is the enthalpy change of a reaction at 90oC, if the enthalpy of reactant at 90oC and 25oC are 60 J and 25 J, and enthalpy of product at 90oC and 25oC are 80 J and 10 J, and the enthalpy change of reaction at 25oC is 5 J?

A. 10 J
B. 50 J
C. 110 J
D. 150 J
Answer» D. 150 J
Discussion
19.

What is the enthalpy change of a reaction at 30oC, if the enthalpy of reactant at 30oC and 25oC are 18 J and 15 J, and enthalpy of product at 30oC and 25oC are 10 J and 8 J, and the enthalpy change of reaction at 25oC is 45 J?

A. 10 J
B. 25 J
C. 50 J
D. 100 J
Answer» D. 100 J
Discussion
20.

What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 22 J and 15 J, and enthalpy of product at 35oC and 25oC are 10 J and 5 J, and the enthalpy change of reaction at 25oC is 36 J?

A. 12 J
B. 24 J
C. 36 J
D. 48 J
Answer» E.
Discussion
21.

What is the enthalpy of reaction for CO2 + 4H2 -> 2H2O + CH4, if the conversion of CO2 is 50%, and heat of formation of CO2, H2, H2O, and CH4 are 6 J, 0, 4 J and 10 J?

A. 2 J
B. 5 J
C. 6 J
D. 9 J
Answer» E.
Discussion
22.

What is the enthalpy of reaction for C2H4 + 3O2 -> 2CO2+ 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?

A. 0
B. 2 J
C. 5 J
D. 10 J
Answer» E.
Discussion
23.

What is the enthalpy of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?

A. 0
B. 2 J
C. 4 J
D. 6 J
Answer» C. 4 J
Discussion
24.

What is the enthalpy of reaction for C + O2 -> CO2, if the conversion of C is 50%, and heat of formation of C, O2, and CO2 are 0, 0 and 10 J.

A. 5 J
B. 10 J
C. 15 J
D. 20 J
Answer» B. 10 J
Discussion
25.

What is the heat of reaction for C6H6 + 3H2 -> C6H12, if heat of formation of C6H6, H2, and C6H12 are 25 J, 5 J and 50 J respectively?

A. 10 J
B. 20 J
C. 30 J
D. 35 J
Answer» B. 20 J
Discussion
26.

What is the heat of reaction for C2H4 + 3O2 -> 2CO2 + 2H2O, if heat of formation of C2H4, O2, CO2, and H2O are 10 J, 5 J, 6 J and 2 J respectively?

A. -4 J
B. -2 J
C. 0
D. 4 J
Answer» B. -2 J
Discussion
27.

What is the heat of reaction for 2H2 + O2 -> 2H2O, if heat of formation of H2, O2, and H2O are 2 J, 5 J, and 10 J respectively?

A. 2 J
B. 5 J
C. 8 J
D. 11 J
Answer» E.
Discussion
28.

What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if heat of formation of CH4, O2, CO2 and H2O are 10 J, 5 J, 6 J, and 12 J respectively?

A. -10 J
B. 10 J
C. -20 J
D. 20 J
Answer» C. -20 J
Discussion
29.

The standard heat of reaction is a heat of reaction for how many moles of compound?

A. 0
B. 1
C. 2
D. 3
Answer» C. 2
Discussion