IGNOU BSC CHE 10 Spectroscopy Solved Assignment English

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CHE 10 Solved Assignment

CHE 10: Spectroscopy

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Title Name IGNOU BSC CHE 10 Spectroscopy Solved Assignment English
Type Soft Copy (E-Assignment) .pdf
University IGNOU
Degree BACHELOR DEGREE PROGRAMMES
Course Code BSC
Course Name Bachelor in Science
Subject Code CHE 10
Subject Name Spectroscopy
Year 2025
Session -
Language English
Assignment Code CHE 10/Assignment-1/2025
Product Description Assignment of BSC (Bachelor in Science) 2025. Latest CHE 010 2025 Solved Assignment Solutions
Format Ready-to-Print PDF (.soft copy)

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CHE 10 2025 - English

Tutor Marked Assignment

CHE-10: Spectroscopy

Course Code: CHE-10

Assignment Code: CHE-10/TMA/2025

Maximum Marks: 100

Note: This assigrument is based on all the four Blocks of the entire course.

All questions are compulsory. Marks for the questions are shown within brackets on the right hand side.

Please answer in your own words, do not copy from the course material.

1. What is Rydberg constant? Calculate its value. Why is its experimental value different from the calculated value? 

2. Derive the symbol for the ground state of hydrogen atom.

3 Write the symmetry elements and the point groups of the following:

(i) Water (ii) Ammonia (iii) Benzene

4. Derive the expression equation

5 The transition from J-0 to J'=1 for HCI takes place at v 21.18 cm-1. Calculate  the bond length for 1H35Cl.

6. What is anharmonicity? Draw a diagram for the variation of potential energy with  intermolecular distance for an anharmonic and harmonic oscillator

7. Draw and explain the normal modes of vibration of water molecule.

 

8. Which functional groups are expected to absorb in the 2000-1500 cm-1 region of IR spectrum? Explain.

9. Discuss the pure rotational spectrum of CO₂ using the suitable diagram

10. Give the selection rules and the schematic diagram of the vibration-rotation Raman (5) spectrum of a diatomic gas.

11. Derive the term symbol for the ground state of LiH.

12. How does solvent polarity affect ?- ?* and  ?- ?*  transitions? Explain. 

13. Give reason for the following:

(a) Mercury (II) iodide is brick red in colour.

(b) The aqueous solution of NiSO, which is pale green turns deep blue on addition of ethylenediamine

14. Answer the following:

(i) What is the role of littron mirror in IR spectrometer?

(ii) Why glass cell cannot be used for IR spectroscopy?

(iii) What are the basic requirements of any container which holds the sample?

(iv) What is the role of Water jacket in Raman Spectrometer?

(v) What is the role of Golay cell in IR spectrometer

15. Draw and explain the NMR spectrum of CH3CHO. 

16. The hydrogen atoms attached to a double bond are deshielded while in case of alkynes the protons are shielded. Explain. 

17. Draw and explain the important components of an ESR spectrometer. 

18. Discuss the ESR spectrum of ethyl radical.

19. What is simple cleavage? Illustrate with the help of a suitable example.

20. Discuss the expected spectral data for C6H5CH2OH.

 


CHE 10 2025 - Hindi

शिक्षक जांच सत्रीय कार्य

स्पेक्ट्रमिकी

रसायन विज्ञान में ऐच्छिक पाठ्यक्रम

पाठ्यक्रम कोड: CHE-10

सत्रीय कार्य कोड: CHE-10/TMA/2025

अधिकतम अंकः 100

नोट: सभी प्रश्नों के उत्तर दीजिए। सभी प्रश्नों के समान अंक हैं और दायीं ओर कोष्ठक में दिए गए हैं।

1. रिडबर्ग नियतांक क्या होता है? इसका मान परिकलित कीजिए। इसका प्रयोगिक मान परिकलित मान से भिन्न क्यों होता है? (5)

2. हाइड्रोजन परमाणु की मूल अवस्था के लिए पद-प्रतीक व्युत्पन्न कीजिए।

3. निम्नलिखित के लिए सममिति तत्व और बिन्दु समूह लिखिएः 

(i) जल

(ii) अमोनिया

(iii) बेन्ज़ीन

4. समीकरण    equation    को व्युत्पन्न कीजिए। 

5. HCI के लिए J=0 से J'= 1 के लिए संक्रमण = 21.18 cm -1 पर होता है। 1H35CI के लिए आबंध लंबाई परिकलित कीजिए।

6. अप्रसंवादिता क्या होती है? किसी अप्रसंवादी दोलक और आवर्ती दोलक के लिए अंतरा अणुक दूरी के साथ गतिज ऊर्जा परिवर्तन का चित्र बनाइए। 

7. जल के अणु के लिए कम्पन की सामान्य विधाओं को आरेखित कीजिए और उनकी व्याख्या कीजिए। 

8. अवरक्त स्पेक्ट्रम के 2000-1500 cm-1 क्षेत्र में कौन-से समूह अवशोषण करेंगे? व्याख्या कीजिए।

9. उचित चित्र की सहायता से CO₂ के शुद्ध घूर्णन स्पेक्ट्रम की चर्चा कीजिए। 

10. किसी द्विपरमाणुक गैस के लिए कम्पन-घूर्णन रामन स्पेक्ट्रम का व्यवस्थात्मक चित्र बनाइए और वरण नियम लिखिए। 

11. LiH की मूल अवस्था के लिए पद प्रतीक व्युत्पन्न कीजिए। 

12. विलायक की ध्रुवता  π - π* और n - π*  संक्रमणों को किस प्रकार प्रभावित करती है? व्याख्या कीजिए।

13. निम्नलिखित के लिए कारण बताइए :

(क) मर्करी (II) आयोडाइड का रंग इष्टिका लाल होता है। 

(ख) NiSO₄ के जलीय विलयन का रंग हल्का हरा होता है किन्तु एथिलीन डाइऐमीन मिलाने पर रंग गहरा नीला हो जाता है।

14. निम्नलिखित के उत्तर दीजिएः

(i) अवरक्त स्पेक्ट्रममापी में लिट्रॉन दर्पण की क्या भूमिका है?

(ii) अवरक्त स्पेक्ट्रम में कांच की कोष्ठिका का उपयोग क्यों नहीं किया जा सकता है?

(iii) जिस पात्र में प्रतिदर्श रखा जाता है उसकी क्या आवश्यकताएँ होती हैं?

(iv) रामन स्पेक्ट्रममापी में पानी की जैकेट की क्या भूमिका है?

(v) अवरक्त स्पेक्ट्रममापी में गोले कोष्ठिका की क्या भूमिका है?

15. CH3CHO के एन.एम.आर. स्पेक्ट्रम को आरेखित कीजिए और उसकी व्याख्या कीजिए।

16. द्वि-आबंध के साथ जुड़े हाइड्रोजन परमाणु अपरिरक्षित होते हैं जबकि ऐल्काइनों के प्रोटॉन परिरक्षित होते हैं। व्याख्या कीजिए।

17. इ.एस.आर. स्पेक्ट्रममापी के महत्वपूर्ण घटकों को आरेखित कीजिए और उनकी व्याख्या कीजिए।

18. एथिल मूलक के इ.एस.आर. स्पेक्ट्रम की चर्चा कीजिए।

19. सामान्य विदलन क्या होता है? उचित उदाहरण के द्वारा दर्शाइए।

20. C6H5CH2OH के लिए अपेक्षित स्पेक्ट्रमी आँकड़ों की चर्चा कीजिए।

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