Chemical Engineering MCQs

By: Prof. Dr. Fazal Rehman | Last updated: November 23, 2024

1. Which of the following is the heteronuclear diatomic molecule that is paramagnetic in nature?

(A). HF and NO
(B). Only NO
(C). NO and O2
(D). HF and O2
(E). None of these

Multiple Choice Question Answer: b

2. The molecules that have bond order equal to 1 are__________

(A). NO, HF, HCl, Li2, CO
(B). Li2, B2, CO, NO, He2+
(C). H2, Li2, B2, HF, HCl
(D). B2, CO, He2+, NO, HF
(E). None of these

Multiple Choice Question Answer: c

3. What is the shape of the PCl5 molecule?

(A). Trigonal bipyramidal
(B). Linear
(C). Trigonal Planar
(D). Tetrahedral
(E). None of these

Multiple Choice Question Answer: a

4. An example of sp3d2 hybridised molecule is ___________

(A). SF6
(B). ClO4–
(C). HCHO
(D). PF5
(E). None of these

Multiple Choice Question Answer: a

5. What are the molecules having sp3d hybridization, because of unsymmetrical structure?

(A). Less stable and more reactive
(B). Less stable and more reasonable
(C). More stable and less reactive
(D). Less stable and less reactive
(E). None of these

Multiple Choice Question Answer: a

6. What are the numbers of chlorine atoms that form the equatorial bonds in the PCl5 molecule?

(A). 1
(B). 3
(C). 2
(D). 4
(E). None of these

Multiple Choice Question Answer: b

7. Which of the following is the bond angles in sp3d2 hybridisation?

(A). 109.5°
(B). 120°
(C). 90°
(D). 180°
(E). None of these

Multiple Choice Question Answer: c

8. What is the interaction between a pair of orbitals of the same type?

(A). Attractive
(B). None of the mentioned
(C). There is no interaction
(D). Repulsive
(E). None of these

Multiple Choice Question Answer: d

9. What does the combination of H (1s1) and F (2px1) give?

(A). Bonding orbital
(B). Both bonding and antibonding orbital
(C). Antibonding orbital
(D). None of the mentioned
(E). None of these

Multiple Choice Question Answer: b

10. Which of the following is the bond order of the NO+ molecule?

(A). 3
(B). 2
(C). 2.5
(D). 4
(E). None of these

Multiple Choice Question Answer: a

11. The molecule that is least stable is ____________

(A). NO+
(B). NO
(C). N2
(D). O2
(E). None of these

Multiple Choice Question Answer: b

12. What is the percentage p-character in sp3 hybridisation?

(A). 25%
(B). 75%
(C). 50%
(D). 66.67%
(E). None of these

Multiple Choice Question Answer: b

13. What is the shape of the H2O compound based upon concepts of hybridization?

(A). Tetrahedral
(B). Pyramidal
(C). Trigonal Planar
(D). Angular or bent structure
(E). None of these

Multiple Choice Question Answer: d

14. Which of the following is the hybridisation of BeF3–?

(A). sp3
(B). sp
(C). d2sp3
(D). sp2
(E). None of these

Multiple Choice Question Answer: d

15. What is the number of s and p bonds in cyclohexadiene (C6H8)?

(A). σ bond = 14, π bond = 2
(B). σ bond = 2, π bond = 14
(C). σ bond = 12, π bond = 2
(D). σ bond = 12, π bond = 4
(E). None of these

Multiple Choice Question Answer: a

16. Which of the following is incorrect?

(A). The Valence bond theory explains the ionization or the gain of electrons that is giving the O2+ and O2– ions, if O2 has a stable octet
(B). The Molecular orbital theory always explains extra stability of the O2+ cation over the O2
(C). The Valence bond theory never explains the paramagnetic nature of O2
(D). The Resonance has no role in the Molecular orbital theory
(E). None of these

Multiple Choice Question Answer: a

17. Which of the following is the hybridisation of Acetylene?

(A). sp3
(B). sp2
(C). sp
(D). dsp2
(E). None of these

Multiple Choice Question Answer: c

18. The molecule that is not homonuclear is __________

(A). H2
(B). NO
(C). N2
(D). O2
(E). None of these

Multiple Choice Question Answer: b

Engineering Chemistry MCQs

Solved MCQs of engineering Chemistry.

1. Engineering Chemistry Important MCQs
2. Adsorption Isotherm MCQs | Chemistry
3. Biodegradable Polymers MCQs
4. Chromatography MCQs  
5. Polymer MCQs
6. Chirality MCQs
7. Conductivity and Conformations MCQs
8. Crystallization and Dendrimers MCQs
9. Distillation and Effect of Temperature on reaction rate
10. Elastomers MCQs
11. Electromeric Effect and Electronic Spectroscopy MCQs
12. Electrophilic Substitution Reaction MCQs
13. Engineering Materials and Fibers MCQs
14. Fission of Covalent Bond MCQs
15. Fractional Distillation MCQs
16. Gibb’s Phase Rule Solved MCQs
17. Hybridization, Homonuclear and Heteronuclear Molecules MCQs | Chemical Engineering MCQs
18. Hyperconjugation and Inductive Effect MCQs
19. Chemical Reactions MCQs
20. Intermolecular Forces and Melting Point MCQs
21. Laws of Photochemistry and Mesomeric Effect MCQs
22. Micelles and Molecular Aggregation MCQs Questions Answers
23. Molecular Spectroscopy and Molecularity of a Reaction MCQs
24. Nuclear Magnetic Resonance and Components MCQs Questions Answers
25. Nucleophilic Substitution Reaction MCQs
26. Optical Isomerism and Order of a Reaction MCQs
27. Organic Conducting Polymers and Origin of spectrum MCQs
28. Particle Size Measurement and Pseudo Order Reaction MCQs
29. Phases and Components MCQs
30. Photochemical Reactions and Photosynthesis MCQs
31. Polymerization, Polymer Blends, and Polymeric Composites MCQs
32. Quantum MCQs
33. Silicones and Polymeric Composites and R, S- Configuration and Water Softening MCQs
34. Stereoselectivity, Stereospecificity and Stereo Structure of Polymers MCQs
35. Steam Distillation and Surface Tension MCQs
36. Thermoplastic Polymers MCQs
37. Chromatography and Vibrational Spectroscopy MCQs
38. Valence Bond Theory and Two-Component System MCQs