\n3<\/td>\n | Do not react with NaOH solution.<\/td>\n | 3<\/td>\n | React with NaOH solution and form corresponding sodium salt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Question 13. \na) Complete the following: (March – 2016)<\/span> \n \nb) Explain the following: \ni) Estenfication \nii) Williamson Synthesis \nAnswer: \n \nb) i) Esterification – Alcohols and phenols react with carboxylic acids, and acid anhydrides in presence of small amount of concentrated sulphuric acid and with acid chlorides in presence of pyridine to form esters. This reaction is known as estenfi cation.<\/p>\nOr, any of the following chemical equations: \n<\/p>\n ii) Wihiamson synthesis – When and alkyl halide is treated with sodium alkoxide ether is formed. It is an important laboratory method for the preparation of symmetrical and unsymmetrical ethers.<\/p>\n Or, the chemical equation: \nR-X + R\u2019 – ONa \u2192 R-O-R\u2019 + NaX<\/p>\n Or, any other specific example.<\/p>\n Question 14. \na) Phenol when treated with Con. HNO3 gives, (Say – 2016)<\/span> \ni) o-Nitrophenol \nii) p-Nitropbenol \niii) 2,4,6 -Thnitro phenol \niv) a mixture of o-nitrophenol and p-nitrophenol.<\/p>\nb) Methanol and ethanol are two commercially important alcohols. Write one method each for the preparation of methanol and ethanol. \nAnswer: \na) iii) 2,4,6-Tnnitrophenol \nb) Methods of preparatIon of methanol : \n1. Destructive distillation of wood. \n2. Catalytic hydrogenation of carbon monoxide at high pressure and temperature in the presence of ZnO – Cr2<\/sub>O3<\/sub> catalyst. \n<\/p>\nMethods of preparation of ethanol: \nFermentation: The sugar in sugarcane or grapes is converted to glucose and fructose in the presence of an enzyme invertase. Glucose and fructose are converted to ethanol and CO2<\/sub> by the enzyme zymase, which is found in yeast.<\/p>\nOR<\/p>\n <\/p>\n Question 15. \na) Arrange the following compounds in the order of increasing boiling points: (March – 2017)<\/span> \nEthanol, Propan-1-ol, Butan-1 -01, Butan-2-ol<\/p>\nb) In the lab students were asked to carry out the reaction between phenol arid conc. HNO3<\/sub>. But one student, \u2018A\u2019 carried out the reaction between phenol and dil. HNO3<\/sub>. Do you think that the student \u2018A\u2019 got the same result as others. Substantiate with suitable explanations. (Also write the chemical equations wherever necessary.) \nAnswer: \na) Ethanol < Propan-1-ol < Butan-2-ol < Butan-1-ol \nb) Student \u2018A\u2019 will get a mixture of o-Nitropehnol and p-Nitrophenol. \n<\/p>\nOther students will get 2,4,6-tnnirophenol (picncacid) as the product. \n<\/p>\n Question 16. \na) Identify the product (Say – 2017)<\/span> \n \nb) Complete the following: \n \nAnswer: \na) ii) CH3<\/sub>CH2<\/sub>OH \nb) i) Picric acid or 2, 4, 6, Trinitro phenol \n \nii) Salicyl aldehyde or2-hydroxy benzaldehyde or \n \niii) C6<\/sub>H5<\/sub>OH + CH3<\/sub>l \nphenol + iodomethane<\/p>\nWe hope the Kerala Plus Two Chemistry Chapter Wise Questions and Answers Chapter 11 Alcohols, Phenols and Ethers help you. If you have any query regarding Kerala Plus Two Chemistry Chapter Wise Questions and Answers Chapter 11 Alcohols, Phenols and Ethers, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":" Plus Two Chemistry Chapter Wise Previous Questions Chapter 11 Alcohols, Phenols and Ethers is part of Kerala Plus Two Chemistry Chapter Wise Previous Year Questions and Answers. Here we have given Plus Two Chemistry Chapter Wise Questions and Answers Chapter 11 Alcohols, Phenols and Ethers. Kerala Plus Two Chemistry Chapter Wise Previous Questions Chapter 11 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[42728],"tags":[],"yoast_head":"\n Plus Two Chemistry Chapter Wise Previous Questions Chapter 11 Alcohols, Phenols and Ethers - A Plus Topper<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n |