{"id":22101,"date":"2018-11-21T15:23:26","date_gmt":"2018-11-21T09:53:26","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=22101"},"modified":"2018-12-17T14:23:11","modified_gmt":"2018-12-17T08:53:11","slug":"cbse-question-paper-2010-class-12-chemistry","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/","title":{"rendered":"CBSE Question Paper 2010 class 12 Chemistry"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/#Class_12_Chemistry_list_of_chapters\" >Class 12 Chemistry list of chapters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/#CBSE_Question_Paper_2010_class_12_Chemistry\" >CBSE Question Paper 2010 class 12 Chemistry<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/#General_Instructions\" >General Instructions<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/#Chemistry_Question_Paper_2010\" >Chemistry Question Paper 2010<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/#Previous_Year_Question_Paper_for_class_12_in_PDF\" >Previous Year Question Paper for class 12 in PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>CBSE Question Paper 2010 class 12 Chemistry<\/strong>\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2010. CBSE previous year question papers with the solution are available in the myCBSEguide mobile app and website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice papers to CBSE schools in India and abroad.<\/p>\n<p style=\"text-align: center;\"><strong>CBSE Question Paper 2010 class 12 Chemistry\u00a0<\/strong><\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-last-year-papers\/3\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/Class%2012%20Chemistry%20Book%20in%20English.jpg\" alt=\"CBSE Question Paper 2017 class 12 Chemistry\" width=\"124\" height=\"159\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_12_Chemistry_list_of_chapters\"><\/span>Class 12 Chemistry list of chapters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>The Solid State<\/li>\n<li>Solutions<\/li>\n<li>Electrochemistry<\/li>\n<li>Chemical Kinetics<\/li>\n<li>Surface Chemistry<\/li>\n<li>General Principles and Processes of Isolation of Elements<\/li>\n<li>The p-Block Elements<\/li>\n<li>The d and f Block Elements<\/li>\n<li>Coordination Compounds<\/li>\n<li>Haloalkanes and Haloarenes<\/li>\n<li>Alcohols, Phenols and Ethers<\/li>\n<li>Aldehydes, Ketones and Carboxylic Acids<\/li>\n<li>Amines<\/li>\n<li>Biomolecules<\/li>\n<li>Polymers<\/li>\n<li>Chemistry in Everyday life<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Question_Paper_2010_class_12_Chemistry\"><\/span>CBSE Question Paper 2010 class 12 Chemistry<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"General_Instructions\"><\/span><strong>General Instructions<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>\n<ol>\n<li>All questions are compulsory.<\/li>\n<li>Marks for each question are indicated against it.<\/li>\n<li>Question numbers 1 to 8\u00a0are very short-answer questions, carrying 1 mark each.\u00a0Answer these in one word or about one sentence each.<\/li>\n<li>Question numbers 9\u00a0to 18\u00a0are short-answer questions, carrying 2 marks each.\u00a0Answer these in about 30 words each.<\/li>\n<li>Question numbers 19\u00a0to 27\u00a0are short-answer questions of 3 marks each. Answer\u00a0these in about 40 words each.<\/li>\n<li>Question numbers 28\u00a0to 30\u00a0are long-answer questions of 5 marks each. Answer these in about 70 words each.<\/li>\n<li>Use Log Tables, if necessary Use of calculators is not permitted.<\/li>\n<\/ol>\n<hr \/>\n<p><strong>1. Write a feature which will distinguish a metallic solid from an ionic solid. [1]<\/strong><\/p>\n<hr \/>\n<p><strong>2. Define \u2018order of a reaction\u2019. [1]<\/strong><\/p>\n<hr \/>\n<p><strong>3. What is an emulsion? [1]<\/strong><\/p>\n<hr \/>\n<p><strong>4. Why does <img decoding=\"async\" style=\"height: 24px; width: 33px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image003.png\" \/>\u00a0dimerise? [1]<\/strong><\/p>\n<hr \/>\n<p><strong>5. Give an example of linkage isomerism. [1]<\/strong><\/p>\n<hr \/>\n<p><strong>6. A solution of <img decoding=\"async\" style=\"height: 19px; width: 42px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image007.png\" \/>\u00a0hydrolyses <img decoding=\"async\" style=\"height: 24px; width: 163px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image008.png\" \/><img decoding=\"async\" style=\"height: 24px; width: 136px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image009.png\" \/>\u00a0Which one of these is more easily hydrolysed? [1]<\/strong><\/p>\n<hr \/>\n<p><strong>7. Draw the structural formula of I-phenylpropan-l-one molecule. [1]<\/strong><\/p>\n<hr \/>\n<p><strong>8. Give the IUPAC name of <img decoding=\"async\" style=\"height: 24px; width: 211px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image012.png\" \/>\u00a0[1]<\/strong><\/p>\n<hr \/>\n<p><strong>9. Non-ideal solutions exhibit either positive or negative deviations from Raoult\u2019s law. What are these deviations and why are they caused? Explain with one example for each type. [2]<\/strong><\/p>\n<hr \/>\n<p><strong>10. A reaction is of first order in reactant A and of second order in reactant B. How is the rate of this reaction affected when (i) the concentration of B alone is increased to three times (ii) the concentrations of A as well as B are doubled? [2]<\/strong><\/p>\n<hr \/>\n<p><strong>11. The rate constant for a reaction of zero order in <img decoding=\"async\" style=\"height: 24px; width: 149px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image019.png\" \/>\u00a0How long will it take for the initial concentration of A to fall from <img decoding=\"async\" style=\"height: 19px; width: 139px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image020.png\" \/>\u00a0[2]<\/strong><\/p>\n<hr \/>\n<p><strong>12. Draw the structures of white phosphorus and red phosphorus. Which one of these two types of phosphorus is more reactive and why? [2]<\/strong><\/p>\n<hr \/>\n<p><strong>13. Explain the following observations:<\/strong><\/p>\n<p><strong>(i) Generally, there is an increase in density of elements from titanium (Z = 22) to copper (Z = 29) in the first series of transition elements.<\/strong><\/p>\n<p><strong>(ii) Transition elements and their compounds are generally found to be good catalysts in chemical reactions. [2]<\/strong><\/p>\n<hr \/>\n<p><strong>14. Name the following coordination compounds according to IUPAC system of nomenclature: [2]<\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 24px; width: 177px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image026.png\" \/><\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 24px; width: 126px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image027.png\" \/><img decoding=\"async\" style=\"height: 21px; width: 178px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image028.png\" \/><\/strong><\/p>\n<hr \/>\n<p><strong>15. Illustrate the following reactions giving a chemical equation for each:<\/strong><\/p>\n<p><strong>(i) Kolbe\u2019s reaction,<\/strong><\/p>\n<p><strong>(ii) Williamson synthesis. [2]<\/strong><\/p>\n<hr \/>\n<p><strong>16. How are the following conversions carried out?<\/strong><\/p>\n<p><strong>(i) Benzyl chloride to benzyl alcohol,<\/strong><\/p>\n<p><strong>(ii) Methyl magnesium bromide to <img decoding=\"async\" style=\"height: 21px; width: 169px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image031.png\" \/>\u00a0[2]<\/strong><\/p>\n<hr \/>\n<p><strong>17. Explain the following terms:<\/strong><\/p>\n<p><strong>(i) Invert sugar<\/strong><\/p>\n<p><strong>(ii) Polypeptides<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>OR<\/strong><\/p>\n<p><strong>Name the products of hydrolysis of sucrose. Why is sucrose not a reducing sugar? [2]<\/strong><\/p>\n<hr \/>\n<p><strong>18. What are essential and non-essential amino acids in human food? Give one example of each type. [2]<\/strong><\/p>\n<hr \/>\n<p><strong>19. The well-known mineral fluorite is chemically calcium fluoride. It is known that in one unit cell of this mineral there are <img decoding=\"async\" style=\"height: 21px; width: 107px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image034.png\" \/><img decoding=\"async\" style=\"height: 21px; width: 63px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image035.png\" \/>\u00a0and that <img decoding=\"async\" style=\"height: 24px; width: 66px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image036.png\" \/>\u00a0are arranged in a fcc lattice. The <img decoding=\"async\" style=\"height: 21px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image037.png\" \/>\u00a0fill all the tetrahedral holes in the face centred cubic lattice of <img decoding=\"async\" style=\"height: 24px; width: 66px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image036.png\" \/>. The edge of the unit cell is <img decoding=\"async\" style=\"height: 21px; width: 95px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image038.png\" \/>\u00a0in length. The density of the solid is <img decoding=\"async\" style=\"height: 24px; width: 82px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image039.png\" \/>\u00a0Use this information to calculate Avogadro\u2019s number <img decoding=\"async\" style=\"height: 29px; width: 254px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image040.png\" \/>\u00a0[3]<\/strong><\/p>\n<hr \/>\n<p><strong>20. A solution prepared by dissolving <img decoding=\"async\" style=\"height: 21px; width: 46px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image045.png\" \/>\u00a0of oil of winter green (methyl salicylate) in <img decoding=\"async\" style=\"height: 21px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image046.png\" \/>\u00a0of benzene has a boiling point of <img decoding=\"async\" style=\"height: 21px; width: 62px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image047.png\" \/>\u00a0Determine the molar mass of this compound. <img decoding=\"async\" style=\"height: 21px; width: 246px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image048.png\" \/><img decoding=\"async\" style=\"height: 25px; width: 229px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image049.png\" \/>\u00a0[3]<\/strong><\/p>\n<hr \/>\n<p><strong>21. What is the difference between multi molecular and macromolecular colloids? Give one example of each type. How are associated colloids different from these two types of colloids? [3]<\/strong><\/p>\n<hr \/>\n<p><strong>22. Describe how the following changes are brought about:<\/strong><\/p>\n<p><strong>(i) Pig iron into steel.<\/strong><\/p>\n<p><strong>(ii) Zinc oxide into metallic zinc.<\/strong><\/p>\n<p><strong>(iii) Impure titanium into pure titanium. [3]<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>OR<\/strong><\/p>\n<p><strong>Describe the role of<\/strong><\/p>\n<p><strong>(i) <img decoding=\"async\" style=\"height: 19px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image055.png\" \/>\u00a0in the extraction of gold from gold are.<\/strong><\/p>\n<p><strong>(ii) <img decoding=\"async\" style=\"height: 24px; width: 34px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image056.png\" \/>\u00a0in the extraction of copper from copper matte.<\/strong><\/p>\n<p><strong>(iii) Iodine in the refining of zirconium.<\/strong><\/p>\n<p><strong>Write chemical equations for the involved reactions.<\/strong><\/p>\n<hr \/>\n<p><strong>23. How would you account for the following?<\/strong><\/p>\n<p><strong>(i) The atomic radii of the metals of the third <img decoding=\"async\" style=\"height: 27px; width: 78px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image065.png\" \/>\u00a0of transition elements are virtually the same as those of the corresponding members of the second <img decoding=\"async\" style=\"height: 27px; width: 82px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image066.png\" \/><\/strong><\/p>\n<p><strong>(ii) The <img decoding=\"async\" style=\"height: 18px; width: 23px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image067.png\" \/>\u00a0value for the <img decoding=\"async\" style=\"height: 21px; width: 82px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image068.png\" \/>\u00a0couple is much more positive than that for <img decoding=\"async\" style=\"height: 21px; width: 73px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image069.png\" \/>\u00a0couple or <img decoding=\"async\" style=\"height: 21px; width: 73px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image070.png\" \/>\u00a0couple.<\/strong><\/p>\n<p><strong>(iii) The highest oxidation state of a metal is exhibited in its oxide or fluoride. [3]<\/strong><\/p>\n<hr \/>\n<p><strong>24. (i) State one use each of DDT and iodoform.<\/strong><\/p>\n<p><strong>(ii) Which compound in the following couples will react faster in <img decoding=\"async\" style=\"height: 25px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image073.png\" \/>\u00a0displacement and why?<\/strong><\/p>\n<p><strong>(a) 1-Bromopentane or 2-bromopentane<\/strong><\/p>\n<p><strong>(b) 1-Bromo-2-methylbutane or 2-bromo-2-methylbutane. [3]<\/strong><\/p>\n<hr \/>\n<p><strong>25. In the following cases rearrange the compounds as directed: [3]<\/strong><\/p>\n<p><strong>(i) In an increasing order of basic strength:<\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 27px; width: 178px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image074.png\" \/><img decoding=\"async\" style=\"height: 27px; width: 178px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image075.png\" \/><\/strong><\/p>\n<p><strong>(ii) In a decreasing order of basic strength:<\/strong><\/p>\n<p><strong>Aniline, p-nitroaniline and p-toluidine<\/strong><\/p>\n<p><strong>(iii) In an increasing order of <img decoding=\"async\" style=\"height: 24px; width: 30px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image076.png\" \/>\u00a0values:<\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 27px; width: 248px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image077.png\" \/><img decoding=\"async\" style=\"height: 24px; width: 98px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image078.png\" \/><\/strong><\/p>\n<hr \/>\n<p><strong>26. Give one example each of<\/strong><\/p>\n<p><strong>(i) addition polymers,<\/strong><\/p>\n<p><strong>(ii) condensation polymers,<\/strong><\/p>\n<p><strong>(iii) copolymers. [3]<\/strong><\/p>\n<hr \/>\n<p><strong>27. What are analgesic medicines? How are they classified and when are they commonly recommended for use? [3]<\/strong><\/p>\n<hr \/>\n<p><strong>28. (a) State Kohlrausch law of independent migration of ions. Write an expression for the molar conductivity of acetic acid at infinite dilution according to Kohlrausch law.<\/strong><\/p>\n<p><strong>(b) Calculate <img decoding=\"async\" style=\"height: 25px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image084.png\" \/>\u00a0for acetic acid.<\/strong><\/p>\n<p><strong>Given that <img decoding=\"async\" style=\"height: 27px; width: 191px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image085.png\" \/><\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 27px; width: 198px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image086.png\" \/><\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 27px; width: 231px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image087.png\" \/>\u00a0[5]<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>OR<\/strong><\/p>\n<p><strong>(a) Write the anode and cathode reactions and the overall reaction occurring in a lead storage battery.<\/strong><\/p>\n<p><strong>(b) A copper-silver cell is set up. The copper ion concentration is <img decoding=\"async\" style=\"height: 19px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image088.png\" \/>\u00a0The concentration of silver ion is not known. The cell potential when measured was <img decoding=\"async\" style=\"height: 19px; width: 61px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image089.png\" \/>\u00a0Determine the concentration of silver ions in the cell. <img decoding=\"async\" style=\"height: 29px; width: 169px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image090.png\" \/><img decoding=\"async\" style=\"height: 27px; width: 126px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image091.png\" \/>\u00a0[5]<\/strong><\/p>\n<hr \/>\n<p><strong>29. (a) Complete the following chemical equations:<\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 34px; width: 171px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image112.png\" \/><\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 24px; width: 158px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image113.png\" \/><\/strong><\/p>\n<p><strong>(b) How would you account for the following?<\/strong><\/p>\n<p><strong>(i) The value of electron gain enthalpy with negative sign for sulphur is higher than that for oxygen.<\/strong><\/p>\n<p><strong>(ii) <img decoding=\"async\" style=\"height: 24px; width: 29px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image114.png\" \/>\u00a0is an exothermic compound but <img decoding=\"async\" style=\"height: 24px; width: 35px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image115.png\" \/>\u00a0is endothermic compound.<\/strong><\/p>\n<p><strong>(iii) <img decoding=\"async\" style=\"height: 24px; width: 33px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image116.png\" \/>\u00a0molecule has a T-shaped structure and not a trigonal planar one. [5]<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>OR<\/strong><\/p>\n<p><strong>(a) Complete the following chemical reaction equations:<\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 24px; width: 116px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image117.png\" \/><\/strong><\/p>\n<p><strong><img decoding=\"async\" style=\"height: 24px; width: 123px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image118.png\" \/><\/strong><\/p>\n<p><strong>(b) Explain the following observations giving appropriate reasons:<\/strong><\/p>\n<p><strong>(i) The stability of +5 oxidation state decreases down the group in group 15 of the periodic table.<\/strong><\/p>\n<p><strong>(ii) Solid phosphorus pentachloride behaves as an ionic compound.<\/strong><\/p>\n<p><strong>(iii) Halogens are strong oxidizing agents. [5]<\/strong><\/p>\n<hr \/>\n<p><strong>30. (a) Explain the mechanism of a nucleophilic attack on the carbonyl group of an alciehyde or a ketone.<\/strong><\/p>\n<p><strong>(b) An organic compound <img decoding=\"async\" style=\"height: 27px; width: 222px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image133.png\" \/>\u00a0was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidation of (C) with chromic acid also produced (B). On dehydration <img decoding=\"async\" style=\"height: 27px; width: 152px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/chemistry\/2010_01\/image134.png\" \/>\u00a0Write the equations for the reactions involved. [5]<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>OR<\/strong><\/p>\n<p><strong>(a) Give chemical tests to distinguish between the following pairs of compounds:<\/strong><\/p>\n<p><strong>(i) Ethanal and Propanal<\/strong><\/p>\n<p><strong>(ii) Phenol and Benzoic acid<\/strong><\/p>\n<p><strong>(b) How will you bring about the following conversions? 5<\/strong><\/p>\n<p><strong>(i) Benzoic acid to benzaldehyde<\/strong><\/p>\n<p><strong>(ii) Ethanal to but-2-enal<\/strong><\/p>\n<p><strong>(iii) Propanone to propane<\/strong><\/p>\n<p><strong>Give complete reaction in each case.<\/strong><\/p>\n<\/div>\n<div>\n<p style=\"text-align: center;\"><strong>These are questions only. To view and download complete question paper with solution install myCBSEguide App from google play store or login to our\u00a0<a href=\"https:\/\/mycbseguide.com\/dashboard\/\">student dashboard<\/a>.<\/strong><\/p>\n<p style=\"text-align: center;\"><b><strong><a class=\"button\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\">Download myCBSEguide App<\/a><\/strong><\/b><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Chemistry_Question_Paper_2010\"><\/span>Chemistry Question Paper 2010<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download class 12 Chemistry question paper with solution from best CBSE App the myCBSEguide. CBSE class 12 Chemistry question paper 2010 in PDF format with solution will help you to understand the latest question paper pattern and marking scheme of the CBSE board examination. You will get to know the difficulty level of the question paper. CBSE question papers 2010 for class 12 Chemistry have 30 questions with solution.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Previous_Year_Question_Paper_for_class_12_in_PDF\"><\/span>Previous Year Question Paper for class 12 in PDF<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE question papers 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 209, 2008, 2007, 2006, 2005 and so on for all the subjects are available under this download link. Practicing real question paper certainly helps students to get confidence and improve performance in weak areas.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-last-year-papers\/3\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-last-year-papers\/3\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-mathematics\/1284\/cbse-last-year-papers\/3\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-last-year-papers\/3\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-accountancy\/1315\/cbse-last-year-papers\/3\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-business-studies\/1727\/cbse-last-year-papers\/3\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-economics\/1327\/cbse-last-year-papers\/3\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-history\/1869\/cbse-last-year-papers\/3\/\">History<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-geography\/1863\/cbse-last-year-papers\/3\/\">Geography<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-political-science\/1879\/cbse-last-year-papers\/3\/\">Political Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physical-education\/1877\/cbse-last-year-papers\/3\/\">Physical Education<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-computer-science\/1851\/cbse-last-year-papers\/3\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-informatics-practices\/1873\/cbse-last-year-papers\/3\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-english-core\/1855\/cbse-last-year-papers\/3\/\">English Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-core\/1865\/cbse-last-year-papers\/3\/\">Hindi Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-elective\/1867\/cbse-last-year-papers\/3\/\">Hindi Elective<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12\/1250\/\">Other Subjects<\/a><\/li>\n<\/ul>\n<p>To download CBSE Question Paper 2010 class 12 Accountancy, Chemistry, Physics, History, Political Science, Economics, Geography, Computer Science, Home Science, Business Studies and Home Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CBSE Question Paper 2010 class 12 Chemistry\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2010. CBSE previous year question papers with the solution are available in the myCBSEguide mobile app and website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice &#8230; <a title=\"CBSE Question Paper 2010 class 12 Chemistry\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2010-class-12-chemistry\/\" aria-label=\"More on CBSE Question Paper 2010 class 12 Chemistry\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1346,1014,1434],"tags":[1527,320,1342,80,1566],"class_list":["post-22101","post","type-post","status-publish","format-standard","hentry","category-cbse","category-cbse-question-papers","category-chemistry-cbse-class-12","tag-cbse-question-paper","tag-chemistry","tag-class-12","tag-last-year-papers","tag-previous-question-paper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - 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