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| Title Name | IGNOU CHE 5 Solved Assignment 2025 |
|---|---|
| Type | Soft Copy (E-Assignment) .pdf |
| University | IGNOU |
| Degree | BACHELOR DEGREE PROGRAMMES |
| Course Code | BSC |
| Course Name | Bachelor in Science |
| Subject Code | CHE 5 |
| Subject Name | Organic Chemistry |
| Year | 2025 |
| Session | |
| Language | English Medium |
| Assignment Code | CHE-05/Assignmentt-1//2025 |
| Product Description | Assignment of BSC (Bachelor in Science) 2025. Latest CHE 05 2025 Solved Assignment Solutions |
| Last Date of IGNOU Assignment Submission | Last Date of Submission of IGNOU CHE-05 (BSC) 2025 Assignment is for January 2025 Session: 30th September, 2025 (for December 2025 Term End Exam).Semester WiseJanuary 2025 Session: 30th March, 2025 (for June 2025 Term End Exam).July 2025 Session: 30th September, 2025 (for December 2025 Term End Exam). |
Ques 1.
Give the IUPAC names of the following compounds:
Ques 2.
Give the structure of the following compounds:
(i) 1, 3-Cyclohexadiene
(ii) N-methylcyclohexanamine
Ques 3.
Draw various stereoisomers of 2, 3-pentanediol and classify them as enantiomers or disastereomers.
Ques 4.
Draw the potential energy diagram for the conformations of n-butane. Compare the stabilities of the important conformations.
Ques 5.
Differentiate between intermolecular and intramolecular hydrogen bonding giving suitable examples.
Ques 6.
Arrange the following in the increasing order of their acid strengths:
Chloroethanoic acid, fluoroethanoic acid, propanoic acid.
Give reason in support of your answer.
Ques 7.
How can cyclopentane be prepared from hexanedioic acid ?
Ques 8.
How would you prepare alkanes from the following? (Give only one example).
(i) Alkyl halide
(ii) Carboxylic acid
Ques 9.
In the mass spectra, alkanes give a series of peaks separated by 14 mass units.
Ques 10.
Alkanes with odd number of carbon atoms have lower melting points than those with an even number of carbon atoms.
Ques 11.
Addition reactions of alkenes are exothermic processes. Explain.
Ques 12.
An alkene having molecular formula C6H12 an ozonolysis yielded butanal and ethanal. What is the structural formula of alkene
Ques 13.
An alkene having molecular formula C6H12 an ozonolysis yielded butanal and ethanal. What is the structural formula of alkene
Ques 14.
Complete the following reactions:
(i) CH3CH2CH2BH2
(ii) (CH3)2C=O + Ph3P = CH2
Ques 15.
Arrange the following bases in increasing order of basic strength and give reason for your answer.
Ques 16.
How would you prepare the following?
(i) 3-Octyne from 1-hexyne
(ii) cis-3-Hexene from 3-hexyne
Ques 17.
Why does nitrobenzene not undergo Friedel-Crafts alkylation?
Ques 18.
What do you understand by para-directing activators, para-directing deactivators and meta-directing deactivators?
Ques 19.
What is Huckel’s rule? Which of the following compound(s) is aromatic? Justify your answer.
(i) Cycloctatatraene
(ii) Nitrobenzene
Ques 20.
Predict the major and minor products of the following reactions:
(i) Friedel-Crafts acylation of pyrrole
(ii) Friedel-Crafts alkylation of pyridine
Ques 21.
Write the structure of 3-methyl-1,3-thiozol.
Ques 22.
2-Position in furan is more reactive than the 3-position towards electrophilic substitution
Ques 23.
Pyrrole is more basic than pyridine.
Ques 24.
Among alkyl halides, order of reactivity of SN2 reaction is
CH3X > p-RX > Sec-RX > tert-RX
Discuss the factors which are mainly responsible for this order.
Ques 25.
Write the chemical equation for following named reactions:
a) Reimer-Tiemann reaction
b) Kolbe reaction
c) Claisen reaction
d) Knoevenagel reaction
e) Willgerodt reaction
Ques 26.
Suggest the reaction that can best be used to prepare following ethers by Williamson ether synthesis
(a) CH3CH2- O- CH= CH2
(b)
Ques 27.
Write the mechanism for the haloform reaction.
Ques 28.
Explain Hell-Vollhard-Zelinski reaction. Also illustrate its synthetic importance.
Ques 29.
Write chemical reactions for the following:
(i) Kolbe Schmidt reaction
(ii) Strecker synthesis
(iii) Dzeckmann cobndensation
(iv) Knoevenagel reaction
(v) Perkin condensation
Ques 30.
Discuss various methods of reduction of esters giving the products formed.
Ques 31.
Why do nitro compounds dissolve in sodium hydroxide?
Ques 32.
What is aci form of nitroethane? Discuss.
Ques 33.
Match the following ions with their correct pKa values and give reasons for your answer
Ques 34.
निम्नलिखित यौगिकों के आई.यू.पी.ए.सी. नाम दीजिएः
Ques 35.
निम्नलिखित यौगिकों की संरचनाएँ दीजिएः
(1) 1, 3- साइक्लोहैक्साडाइईन
(ii) N- मेथिलसाइक्लो हैक्सेनैमीन
Ques 36.
2, 3-पेन्टेनडाइऑल के विभिन्न त्रिविम समावयव आरेखित कीजिए और उन्हें ऐनैन्टिओमरों और डाइस्टीरियोमरों में वर्गीकृत कीजिए।
Ques 37.
n-ब्यूटेन के कॉन्फॉर्मेशनों के लिए स्थितिज ऊर्जा आरेख बनाइए। महत्वपूर्ण कॉन्फॉर्मेशनों के स्थायित्वों की तुलना कीजिए।
Ques 38.
उचित उदाहरण देते हुए अंतःअणुक और अंतरा अणुक हाइड्रोजन आबंधन में अंतर कीजिए।
Ques 39.
निम्नलिखित को उनकी अम्ल प्रबलता के बढ़ते क्रम में व्यवस्थित कीजिए:
क्लोरोएथेनोइक अम्ल, फ्लुओरोएथेनोइक अम्ल, प्रोपेनाइक अम्ल
Ques 40.
अपने उत्तर के लिए कारण भी बताइए।
साइक्लोपेन्टेन को हेक्सेनडाइओइक अम्ल से किस प्रकार बनाया जा सकता है?
(ख) आप निम्नलिखित से ऐल्केन किस प्रकार बनाएंगे?
(i) ऐल्किल हैलाइड
(ii) कार्बोक्सिलिक अम्ल
Ques 41.
द्रव्यमान स्पेक्ट्रम में ऐल्केन 14 द्रव्यमान इकाइयों द्वारा पृथकित शिखरों की श्रेणी प्रदर्शित करती हैं।
Ques 42.
कार्बन परमाणुओं की विषम संख्या वाली ऐल्केनों के गलनांक सम संख्या वाली ऐल्केनों के गलनांकों की तुलना में कम होते हैं।
Ques 43.
एक ऐल्कीनों की संकलन अभिक्रियाएं उष्माक्षेपी होती हैं। व्याख्या कीजिए।
Ques 44.
एक ऐल्कीन जिसका अणु सूत्र C6H12 है, ओज़ोनोलिसिस करने पर ब्यूटेनैल और एथैनैल देती है। इस ऐल्कीन का संरचना सूत्र क्या है?
Ques 45.
निम्नलिखित अभिक्रियाओं को पूरा कीजिए:
(i) CH3CH2CH2BH2 CH3COOH
ii) (CH3)2C=O + Ph3P = CH2 CH3CH=CH-CHO
Ques 46.
निम्नलिखित कारकों को उनकी क्षारीय प्रबलता के बढ़ते क्रम में व्यवस्थित कीजिए और अपने उत्तर के लिए कारण बताइए।
Ques 47.
आप निम्नलिखित को किस प्रकार बनाएंगे?
(i) 1-हैक्साइन से 3-ऑक्टाइन
(ii) 3-हैक्साइन से सिस 3-हैक्सीन
Ques 48.
नाइट्रोबेन्ज़ीन का फ्रीड्ल क्राफ्ट्स ऐल्किलीकरण क्यों नहीं होता है?
Ques 49.
आप पैरा-निदेशात्मक सक्रियक, पैरा-निदेशात्मक निष्क्रियक और मेटा-निदेशात्मक निष्क्रियक से क्या समझते हैं?
Ques 50.
हकल नियम क्या होता है? निम्नलिखित में से कौन-सा यौगिक ऐरोमैटिक है?
अपने उत्तर की पुष्टि कीजिए।
(i) साइक्लोऑक्टाटेट्राईन
(ii) नाइट्रोबेन्ज़ीन
Ques 51.
निम्नलिखित अभिक्रियाओं के मुख्य और अल्प उत्पाद बताइएः
(i) पिरोल का फ्रीडेल-क्राफ्ट्स ऐसिलीकरण
(ii) पिरीडीन का फ्रीडेल- क्राफ्ट्स ऐल्किलीकरण
Ques 52.
3-मेथिल-1, 3-थायाज़ोल की संरचना लिखिए।
Ques 53.
इलेक्ट्रॉन स्नेही प्रतिस्थापन के प्रति फ्यूरेन की 2-स्थिति 3-स्थिति से अधिक अभिक्रियाशील होती है।
Ques 54.
पिरोल पिरीडीन से अधिक क्षारीय है।
Ques 55.
एल्किल हैलाइडों में SN2 अभिक्रिया की अभिक्रियाशीलता की दर का क्रम निम्न प्रकार से है
CH3X > प्राथमिक RX > द्वितीयक RX > तृतीयक RX अभिक्रियाशीलता इस क्रम के कारकों की व्याख्या कीजिए।
Ques 56.
निम्नलिखित अभिक्रियाओं के लिए रासायनिक समीकरण लिखिए।
क) राइमर टीमन अभिक्रिया
ख) कोल्बे अभिक्रिया
ग) क्लेजन अभिक्रिया
घ) नोवेनेजेल अभिक्रिया
ङ) विल्जेरोट अभिक्रिया
Ques 57.
विलियम्सन ईथर संष्लेषण द्वारा निम्नलिखित ईथरों को बनाने के लिए सर्वोत्तम अभिकर्मक सुझाइएः
क) CH3CH2-O-CH=CH2
Ques 58.
हैलाफॉर्म अभिक्रिया की क्रियाविधि लिखिए।
Ques 59.
हेल-फोलॉर्ड-जेलिस्की अभिक्रिया की व्याख्या कीजिए। इसके सांश्लेषिक महत्व को भी दर्शाइए।
Ques 60.
निम्नलिखित रासायनिक अभिक्रियाओं को लिखिएः
Ques 61.
एस्टरों के अपचयन की विभिन्न विधियों की प्राप्त उत्पादों को बताते हुए चर्चा कीजिए।
Ques 62.
नाइट्रो यौगिक सोडियम हाइड्रॉक्साइड में क्यों विलेय होते हैं?
Ques 63.
नाइट्रोएथेन का ऐसि रूप क्या है? इसकी प्रकृति की चर्चा कीजिए।
Ques 64.
न्यूक्लिओटाइड क्या होते हैं? डी.एन.ए. में उपस्थित न्यूक्लिओटाइडों के नाम और संरचनाएं दीजिए।
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| Course Name | Bachelor in Science |
| Course Code | BSC |
| Programm | BACHELOR DEGREE PROGRAMMES Courses |
| Language | English |
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