{"id":4702,"date":"2016-05-17T11:49:00","date_gmt":"2016-05-17T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-class-11-chemistry-hydrocarbons\/"},"modified":"2018-10-22T18:24:32","modified_gmt":"2018-10-22T12:54:32","slug":"ncert-solutions-class-11-chemistry-hydrocarbons","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-class-11-chemistry-hydrocarbons\/","title":{"rendered":"NCERT Solutions class-11 Chemistry Hydrocarbons"},"content":{"rendered":"

HYDROCARBONS<\/strong><\/center>1.How do you account for the formation of ethane during chlorination of methane?<\/p>\n

2. Write IUPAC names of the following compounds:<\/p>\n

a. <\/p>\n

b. <\/p>\n

c. \"14360850231921.jpg\"<\/p>\n

d. \"14360850240789.jpg\"<\/p>\n

e. \"14360850247578.jpg\"<\/p>\n

f. <\/p>\n

g. <\/p>\n

3.For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:<\/p>\n

(a) (one double bond)<\/p>\n

(b) (one triple bond)<\/p>\n

4. Write IUPAC names of the products obtained by the ozonolysis of the following compounds:<\/p>\n

(i) Pent-2-ene<\/p>\n

(ii) 3,4-Dimethyl-hept-3-ene<\/p>\n

(iii) 2-Ethylbut-1-ene<\/p>\n

(iv) 1-Phenylbut-1-ene<\/p>\n

5. An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one. Write structure and IUPAC name of ‘A’.<\/p>\n

6. An alkene ‘A’ contains three C – C, eight C – H bonds and one C – C bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.<\/p>\n

7. Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?<\/p>\n

8. Write chemical equations for combustion reaction of the following hydrocarbons:<\/p>\n

(i) Butane<\/p>\n

(ii) Pentene<\/p>\n

(iii) Hexyne<\/p>\n

(iv) Toluene<\/p>\n

9. Draw the c is<\/em> and trans<\/em> structures of hex-2-ene. Which isomer will have higher b.p. and why?<\/p>\n

10. Why is benzene extra ordinarily stable though it contains three doublebonds?<\/p>\n

11. What are the necessary conditions for any system to be aromatic?<\/p>\n

12. Explain why the following systems are not aromatic?<\/p>\n

(i)<\/p>\n

\"14360851976306.jpg\"<\/p>\n

(ii)<\/p>\n

\"14360851985264.jpg\"<\/p>\n

(iii)<\/p>\n

\"14360851992675.jpg\"<\/p>\n

13. How will you convert benzene into<\/p>\n

(i) p<\/em>-nitrobromobenzene<\/p>\n

(ii) m<\/em>-nitrochlorobenzene<\/p>\n

(iii) p<\/em> -nitrotoluene<\/p>\n

(iv) acetophenone<\/p>\n

14.In the alkane , identify 1\u00b0, 2\u00b0, 3\u00b0 carbon atoms and give the number of H atoms bonded to each one of these.<\/p>\n

15.What effect does branching of an alkane chain has on its boiling point?<\/p>\n

16. Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.<\/p>\n

17. Write down the products of ozonolysis of 1, 2-dimethylbenzene (o<\/em>-xylene). How does the result support Kekule structure for benzene?<\/p>\n

18.Arrange benzene, n<\/em>-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.<\/p>\n

19. Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?<\/p>\n

20. How would you convert the following compounds into benzene?<\/p>\n

(i) Ethyne<\/p>\n

(ii) Ethene<\/p>\n

(iii) Hexane<\/p>\n

21. Write structures of all the alkenes which on hydrogenation give 2-methylbutane.<\/p>\n

22. Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+<\/p>\n

(a) Chlorobenzene, 2,4-dinitrochlorobenzene, p<\/em>-nitrochlorobenzene<\/p>\n

(b) Toluene, .<\/p>\n

23. Out of benzene, m<\/em>-dinitrobenzene and toluene which will undergo nitration most easily and why?<\/p>\n

24. Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene.<\/p>\n

25. Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.<\/p>\n","protected":false},"excerpt":{"rendered":"

HYDROCARBONS1.How do you account for the formation of ethane during chlorination of methane? 2. Write IUPAC names of the following compounds: a. b. c. d. e. f. g. 3.For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated: (a) (one double … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47,281],"tags":[],"class_list":["post-4702","post","type-post","status-publish","format-standard","hentry","category-cbse-class-11","category-ncert-solutions"],"yoast_head":"\nNCERT Solutions class-11 Chemistry Hydrocarbons | myCBSEguide<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-class-11-chemistry-hydrocarbons\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT Solutions class-11 Chemistry Hydrocarbons | myCBSEguide\" \/>\n<meta property=\"og:description\" content=\"HYDROCARBONS1.How do you account for the formation of ethane during chlorination of methane? 2. Write IUPAC names of the following compounds: a. b. c. d. e. f. g. 3.For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated: (a) (one double ... 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