Quantum MCQs Questions Answers

 

on the basis of quantum efficiency can be done into which categories classification of photochemical reaction.

(A).  4

(B).  2

(C).  3

(D).  5

(E). None of these

Multiple Choice Question Answer:  c

.With the number of photons absorbed for expressing the relationship between the number of molecules reacting, the concept of which one was introduced?

(A).  photon degradation

(B).  photon analysis

(C).  quantum mechanism

(D).  quantum efficiency

(E). None of these

Multiple Choice Question Answer:  d

. By which of the following Quantum efficiency is given?

(A). nq/Nhcλ

(B). nNhc/qλ

(C). ncλ/Nhq

(D). qλ/nNhc

(E). None of these

Multiple Choice Question Answer:  b

. which of the following is correct if a reaction obeys Einstein law, quantum yield?

(A).  0

(B).  more than 1

(C).  less than 1

(D).  1

(E). None of these

Multiple Choice Question Answer:  d

. The reaction has which quantum yield when the number of molecules decomposed is less than one per photon,.

(A).  variable

(B).  high

(C).  unpredictable

(D).  low

(E). None of these

Multiple Choice Question Answer:  d

. The reaction has which quantum yield when two or more molecules are decomposed per photon?

(A).  unpredictable

(B).  low

(C).  high

(D).  variable

(E). None of these

Multiple Choice Question Answer:  c

. Decomposition of HI has quantum yield equals to which one?

(A).  1

(B).  0

(C).  2

(D).  4

(E). None of these

Multiple Choice Question Answer:  c

. __________________ is the condition for high and low quantum yield.

(A).  for forming the products the molecules in the activated state should be largely unstable and decompose

(B).  in the different energy state all the reactant molecules should be

(C).  temperature dependent the reactivity of the molecules should be

(D).  quantum field=1

(E). None of these

Multiple Choice Question Answer:  a

 

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