Molecular Spectroscopy and Molecularity of a Reaction MCQs

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1. What does Molecular Spectroscopy mainly study?



2. Molecularity of a reaction refers to:



3. Which type of spectroscopy deals with rotational transitions?



4. A unimolecular reaction involves:



5. IR (Infrared) spectroscopy is mainly used to study:



6. A bimolecular reaction occurs when:



7. UV-Visible spectroscopy detects:



8. Termolecular reactions are rare because:



9. Which spectroscopy uses radiofrequency radiation?



10. Molecularity applies only to:



11. Raman spectroscopy is based on:



12. A reaction with molecularity of 3 is called:



13. Beer–Lambert Law is applied in which spectroscopy?



14. Molecularity can never be:



15. IR absorption occurs when:



16. A reaction step involving two molecules has order:
(Order ≠ molecularity)




17. Which region is used for vibrational frequencies?



18. Molecularity of an elementary reaction is determined by:



19. The technique used to analyze functional groups is:



20. A unimolecular reaction usually follows:



21. NMR spectroscopy is based on:



22. Molecularity cannot be determined from the:



23. Fingerprint region is found in:



24. The molecularity of decomposition of N₂O₅ in one step is:
(Single molecule decomposes)




25. UV spectroscopy mainly involves transitions from:



26. Molecularity depends on:



27. Raman shift is measured in units of:



28. A reaction having molecularity 2 is:



29. In NMR, chemical shift is measured in:



30. Molecularity is always a:



31. Microwave spectroscopy studies:



32. A reaction cannot have molecularity more than:
(Probability becomes extremely low)




33. UV-Vis absorption increases with:



34. Which is true for molecularity?



35. NMR detects:



36. A bimolecular reaction involves collision of:



37. IR region is divided into:



38. For molecularity, the slowest step is:



39. UV transitions occur due to:



40. Molecularity is not applicable to:



41. IR radiation causes molecules to:



42. A reaction involving O₃ → O₂ + O has molecularity:



43. Raman spectroscopy detects:



44. Molecularity and order are equal only when reaction is:



45. NMR spectra splitting is caused by:



46. A reaction cannot have molecularity of:



47. IR absorption bands depend on:



48. In a bimolecular step, rate depends on:



49. UV spectroscopy is useful for compounds with:



50. Termolecular reactions have:



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