MCQ Mock Test for B.Sc. 6th Semester Organic Spectroscopy: Rotational Spectra
If you’re preparing for your B.Sc. 6th Semester Organic Spectroscopy exams, especially focusing on Rotational Spectroscopy, you’re in the right place. This post provides a comprehensive MCQ mock test to help you revise important concepts and practice typical exam questions. Perfect for students studying rotational spectra, microwave spectroscopy, and molecular rotational transitions.
🔍 Why Study Rotational Spectroscopy?
Rotational Spectroscopy is a key topic in Organic and Physical Chemistry, particularly important for understanding molecular structure, bond length, and dipole moment. It forms the foundation for microwave spectroscopy, often included in B.Sc. Chemistry syllabi.
✅ Rotational Spectra MCQ Mock Test
Try these Multiple Choice Questions (MCQs) designed according to the latest B.Sc. 6th semester syllabus.
Rotational Spectroscopy MCQ Mock Test For B.Sc. VI Semester
Quiz-summary
0 of 12 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
Information
This Rotational Spectroscopy MCQ Mock Test is a great way to prepare for your B.Sc. 6th Semester Organic Spectroscopy exam. Understanding these fundamentals will also help you in higher studies and competitive exams like GATE and CSIR-NET.
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 12 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Spectroscopy 0%
| Pos. | Name | Entered on | Points | Result |
|---|---|---|---|---|
| Table is loading | ||||
| No data available | ||||
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- Answered
- Review
-
Question 1 of 12
1. Question
Category: SpectroscopyRotational spectra are observed in which region of the electromagnetic spectrum?
(A) Ultraviolet
(B) Infrared
(C) Visible
(D) Microwave -
Question 2 of 12
2. Question
Category: SpectroscopyWhich type of molecules show pure rotational spectra?
(A) Molecules with no dipole moment
(B) Symmetric molecules
(C) Molecules with permanent dipole moment
(D) All molecules -
Question 3 of 12
3. Question
Category: SpectroscopyThe selection rule for rotational transitions is:
(A) ΔJ = ±2
(B) ΔJ = ±1
(C) ΔJ = ±3
(D) ΔJ = 0 -
Question 4 of 12
4. Question
Category: SpectroscopyThe energy of a rotational level is given by:
(A) E = BJ
(B) E = J(J+1)
(C) E = B J(J+1)
(D) E = BJ² -
Question 5 of 12
5. Question
Category: SpectroscopyThe spacing between successive rotational lines is:
(A) 2B
(B) B
(C) J(J+1)
(D) Variable -
Question 6 of 12
6. Question
Category: SpectroscopyWhich molecule will not exhibit rotational spectra?
(A) HCl
(B) CO
(C) O₂
(D) HF -
Question 7 of 12
7. Question
Category: SpectroscopyThe moment of inertia III for a diatomic molecule is calculated as:
(A) I=μr
(B) I=μr2
(C) I=r/μ
(D) I=μ2r -
Question 8 of 12
8. Question
Category: SpectroscopyThe rotational constant B is related to moment of inertia as:
(A) B∝I
(B) B∝√I
(C) B∝1/I
(D) B is independent of I -
Question 9 of 12
9. Question
Category: SpectroscopyRotational spectroscopy provides information about:
(A) Molecular weight
(B) Bond energy
(C) Bond length
(D) Electron density -
Question 10 of 12
10. Question
Category: SpectroscopyA molecule without a permanent dipole moment:
(A) Will not show rotational spectra
(B) Will show weak spectra
(C) Will show infrared spectra
(D) None of the above -
Question 11 of 12
11. Question
Category: SpectroscopyWhich of the following has the highest moment of inertia?
(A) H₂
(B) CO
(C) ICl
(D) HF -
Question 12 of 12
12. Question
Category: SpectroscopyA rigid rotator is an ideal model that assumes:
(A) Constant bond length
(B) Constant dipole moment
(C) No centrifugal distortion
(D) Both A and C
📘 Topics Covered in This Mock Test
- Rotational energy levels
- Selection rules
- Moment of inertia
- Rotational constant (B)
- Diatomic and polyatomic molecule behavior
- Dipole moment requirement
- Microwave spectroscopy fundamentals
📚 Study Tips for B.Sc. Organic Spectroscopy (Rotational Spectra)
- Revise basic formulas: E = B J(J+1), I = ur^2, etc.
- Focus on selection rules: only transitions where ΔJ=±1\Delta J = \pm1 are allowed.
- Learn about types of molecules that can and cannot show rotational spectra.
- Practice numerical problems involving bond length and moment of inertia.
❓ FAQs: Rotational Spectroscopy MCQs for B.Sc. Chemistry
Q1. Are these questions suitable for CSIR-NET or GATE?
While the difficulty level here is suited for B.Sc. exams, the fundamental concepts overlap with entrance exams like CSIR-NET and GATE.
Q2. What is the best book for rotational spectroscopy?
“Spectroscopy” by P.S. Kalsi and “Fundamentals of Molecular Spectroscopy” by C.N. Banwell are great references.
Q3. Can symmetric molecules show rotational spectra?
Only asymmetric molecules with a permanent dipole moment exhibit rotational spectra.
🎯 Conclusion
This Rotational Spectroscopy MCQ Mock Test is a great way to prepare for your B.Sc. 6th Semester Organic Spectroscopy exam. Understanding these fundamentals will also help you in higher studies and competitive exams like GATE and CSIR-NET.
For more Chemistry MCQs and Study Notes, bookmark this site and stay tuned!