{"id":8195,"date":"2022-01-19T19:03:05","date_gmt":"2022-01-19T13:33:05","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=8195"},"modified":"2023-12-21T16:50:35","modified_gmt":"2023-12-21T11:20:35","slug":"cbse-sample-papers-class-12-chemistry-solved-2016-set-10","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/","title":{"rendered":"CBSE Sample Papers &#8211; Class 12 Chemistry Solved 2016 Set 10"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 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\">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\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><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><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#CBSE_Sample_Papers_-_Chemistry_2016_Set_10\" title=\"CBSE Sample Papers &#8211; Chemistry 2016 Set 10\">CBSE Sample Papers &#8211; Chemistry 2016 Set 10<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_A\" title=\"Section A\">Section A<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_B\" title=\"Section B\">Section B<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_C\" title=\"Section C\">Section C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_D\" title=\"Section D\">Section D<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_E\" title=\"Section E\">Section E<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Answers\" title=\"Answers\">Answers<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_A-2\" title=\"Section A\">Section A<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_B-2\" title=\"Section B\">Section B<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_C-2\" title=\"Section C\">Section C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_D-2\" title=\"Section D\">Section D<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/cbse-sample-papers\/class-12\/chemistry\/solved-2016-set-10\/#Section_E-2\" title=\"Section E\">Section E<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Sample_Papers_-_Chemistry_2016_Set_10\"><\/span><strong>CBSE Sample Papers &#8211; Chemistry 2016 Set 10<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Get CBSE Sample Papers for Class 12 Chemistry on Infinity Learn for free.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_A\"><\/span><strong>Section A<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>1.Convert 1\u00b0 alcohol to 2<sup>0<\/sup> alcohol.<\/p>\n<p>2.Write a test to differentiate between pentan-2-one and pentan-3-one.<\/p>\n<p>3.How do you explain the presence of all the six carbon atoms in glucose in a straight chain?<\/p>\n<p>4.Why does white ZnO(s) becomes yellow on heating?<\/p>\n<p>5.Iodine is more soluble in KI than in water.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_B\"><\/span><strong>Section B<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>6.Account for the following:<\/p>\n<p>(i) Alkaline medium inhibits the rusting of iron.<\/p>\n<p>(ii) Why is alternating current used for measuring resistance of an electrolytic solution?<\/p>\n<p>7.What are the IUPAC names and give the structure of the insecticide DDT and BHC ? Why is their use banned in India and in other countries?<\/p>\n<p>8.What will be the osmotic pressure of 0.1 M monobasic acid, its pH is 2 at 25\u00b0C ?<\/p>\n<p>9.Give two requirements for vapour phase refining.<\/p>\n<p>10. Calculate the order of the reaction from the following data<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23920506895_49ccd790b1_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-10\" width=\"833\" height=\"201\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_C\"><\/span><strong>Section C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>11.(i) Write the structure of pyrophosphoric acid, dithionic acid and Marshall\u2019s acid.<\/p>\n<p>(ii) PC1<sub>5<\/sub> reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH<sub>3<\/sub> Write the reactions involved to explain what happens?<\/p>\n<p>12.Vapour pressure of pure water at 298 K is 23.8 mmHg. 50 g of urea (NH<sub>2<\/sub>CONH<sub>2<\/sub> ) is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its relative lowering.<\/p>\n<p>13. An element occurs in bcc structure. It has a cell edge length of 250 pm. Calculate the molar mass, if its density is 8.0 g cm<sup>-3<\/sup> . Also, calculate the radius of an atom of this element.<br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23624839390_b28c57efdb_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-14\" width=\"1041\" height=\"120\" \/><\/p>\n<p>15. A solution containing 0.319 g of CrCl<sub>3<\/sub>-6H<sub>2<\/sub>0 was passed through a cation exchange resin and acid coming out of the cation exchange resin required 28.5 mL of 0.125 M NaOH. Determine the correct formula of the complex [molecular weight of the complex =266.5gmor<sup>1<\/sup>].<\/p>\n<p>16. (i) What happens when gelatin is mixed with gold sol?<\/p>\n<p>(ii) How do emulsifying agents stabilise the emulsion?<\/p>\n<p>(iii) Why does bleeding stop by rubbing moist alum?<\/p>\n<p>17.(i) Give the name and structure of the initial material used in the industrial preparation of phenol.<\/p>\n<p>(ii) Write complete reaction for the bromination of phenol in aqueous and non-aqueous medium.<\/p>\n<p>(iii) Explain, why Lewis acid is not required in bromination of phenol.<\/p>\n<p>18. In what respect do prontosil and salvarsan resemble? Is there any resemblance between azo dye and prontosil? Explain.<\/p>\n<p>19. Write the names and structures of monomers of<\/p>\n<p>(i) natural rubber. (ii) terylene.     (iii) teflon.<\/p>\n<p>Or<\/p>\n<p>Are polyesters and polyacrylates same? Justify your answer.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293736093_74b2070102_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-20\" width=\"644\" height=\"153\" \/><\/p>\n<p>21. (i) What are the essential and non-essential amino acids? Give two examples of each type.<\/p>\n<p>(ii) What causes the disease sickel cell anaemia?<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23552669159_28f38cf6af_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-22\" width=\"652\" height=\"206\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_D\"><\/span><strong>Section D<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>23. Oxygen atom transfer from N0<sub>2<\/sub> to CO produces NO and C0<sub>2<\/sub>.<\/p>\n<p>NO, (g) + CO(g)\u2014\u2013 \u25ba NO (g) + C0<sub>2<\/sub> (g)<\/p>\n<p>This reaction can also be utilised to remove poisonous gases like N0<sub>2<\/sub>, CO, etc., from the atmosphere.<\/p>\n<p>The rate equation for this reaction at temperature less than 500 K is Rate =k [N0<sub>2<\/sub> ]<sup>2<\/sup>.<\/p>\n<p>Based on the above information, answer the following questions.<\/p>\n<ul>\n<li>Can this reaction occur in one bimolecular step?<\/li>\n<li>If the concentration of N0<sub>2<\/sub> is doubled, what will be the rate of the reaction?<\/li>\n<li>Addition of catalyst increases the rate of the reaction. Why?<\/li>\n<li>What values do you get from the above passage?<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_E\"><\/span><strong>Section E<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>24. An alkene A (molecular formula C<sub>5<\/sub>H<sub>10<\/sub>) on ozonolysis gives a mixture of two compounds B and C . Compound B gives positive Fehling\u2019s test and also forms iodoform on treatment with I<sub>2<\/sub> and NaOH. Compound C does not give Fehling\u2019s test but forms iodoform. Identify the compounds A, B and C. Write the reaction for ozonolysis and formation of iodoform from B and C.<\/p>\n<p>Or<\/p>\n<p>When liquid A is treated with a freshly prepared ammoniacal silver nitrate solution, it gives bright silver mirror. The liquid forms a white crystalline solid on treatment with sodium hydrogen sulphite. Liquid B also forms a white crystalline solid with sodium hydrogen sulphite but it does not give test with ammoniacal silver nitrate. Which of the two liquids is aldehyde? Write the chemical equations of these reactions also.<\/p>\n<p>25. A violet compound of manganese A decomposes on heating to liberate oxygen and compounds B and C of manganese are formed. Compound C reacts with KOH in the presence of potassium nitrate to give compound<\/p>\n<p>On heating compound C with cone. H<sub>2<\/sub>S0<sub>4<\/sub> and NaCl, chlorine gas is liberated and a compound D of manganese along with other products is formed. Identify compounds A to D and also explain the reactions involved.<\/p>\n<p>Or<\/p>\n<ul>\n<li>Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III) catalyse the reaction between iodide and persulphate ions?<\/li>\n<li>Mention any three processes where transition metals act as catalysts.<\/li>\n<\/ul>\n<p>26. Assign reasons for the following.<\/p>\n<ul>\n<li>Describe the favourable conditions for the manufacturing of (a) ammonia by Haber\u2019s process, and (b) sulphuric acid by contact process.<\/li>\n<li>Draw the structures of the following.<\/li>\n<li>PCl<sub>5<\/sub>(g) (b) S<sub>8<\/sub>(g) (c) C1F<sub>3<\/sub> (g)<\/li>\n<\/ul>\n<p>Or<\/p>\n<p>Assign reasons for the following.<\/p>\n<ul>\n<li>Sulphur in vapour phase is paramagnetic.<\/li>\n<li>Ammonia (NH<sub>3<\/sub>) has greater affinity for protons than phosphine (PH<sub>3<\/sub>).<\/li>\n<li>The negative value of electron gain enthalpy of fluorine is less than that of chlorine.<\/li>\n<li>BiCl<sub>3<\/sub> is less covalent than PC1<sub>3<\/sub>. Explain.<\/li>\n<li>In noble gases, only xenon is known to form well established chemical compounds.<\/li>\n<\/ul>\n<p><strong> <\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Answers\"><\/span><strong>Answers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Section_A-2\"><\/span><strong>Section A<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>1.Convert 1\u00b0 alcohol to 2<sup>0<\/sup> alcohol.<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895800666_c62cfca7d0_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-1\" width=\"452\" height=\"191\" \/><\/p>\n<p><strong>2.Write a test to differentiate between pentan-2-one and pentan-3-one.<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921872555_db9606f23f_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-2\" width=\"488\" height=\"360\" \/><\/p>\n<p><strong>3.How do you explain the presence of all the six carbon atoms in glucose in a straight chain?<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839389151_e3a4f58591_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-3\" width=\"479\" height=\"192\" \/><\/p>\n<p><strong>4.Why does white ZnO(s) becomes yellow on heating?<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626214200_920cbfbeac_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-4\" width=\"492\" height=\"188\" \/><\/p>\n<p><strong>5.Iodine is more soluble in KI than in water.<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<h3><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"Section_B-2\"><\/span><strong>Section B<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>6.Account for the following:<\/strong><\/p>\n<p><strong>(i) Alkaline medium inhibits the rusting of iron.<\/strong><\/p>\n<p><strong>(ii) Why is alternating current used for measuring resistance of an electrolytic solution?<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813577552_b61d281976_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-6\" width=\"467\" height=\"198\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554034199_cdbdf14840_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-6a\" width=\"485\" height=\"61\" \/><\/p>\n<p><strong>7.What are the IUPAC names and give the structure of the insecticide DDT and BHC ? Why is their use banned in India and in other countries?<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895799316_687bf1d364_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-7\" width=\"490\" height=\"396\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921871245_ff29b8545b_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-7a\" width=\"497\" height=\"243\" \/><\/p>\n<p><strong>8.What will be the osmotic pressure of 0.1 M monobasic acid, its pH is 2 at 25\u00b0C ?<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813577052_fa666bc773_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-8\" width=\"484\" height=\"402\" \/><\/p>\n<p><strong>9.Give two requirements for vapour phase refining.<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921871125_00e3b4657e_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-9\" width=\"483\" height=\"157\" \/><\/p>\n<p><strong>10. Calculate the order of the reaction from the following data<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23920506895_49ccd790b1_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-10\" width=\"833\" height=\"201\" \/><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293675794_8b15e6c091_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-10\" width=\"483\" height=\"404\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921870745_e04943b0f5_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-10a\" width=\"485\" height=\"290\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895798316_b5ac9e0e5e_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-10aa\" width=\"492\" height=\"181\" \/><\/p>\n<h3><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"Section_C-2\"><\/span><strong>Section C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>11.(i) Write the structure of pyrophosphoric acid, dithionic acid and Marshall\u2019s acid.<\/strong><\/p>\n<p><strong>(ii) PC1<sub>5<\/sub> reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH<sub>3<\/sub> Write the reactions involved to explain what happens?<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839387381_ec90565b10_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-11\" width=\"484\" height=\"468\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921869885_bb4682efbe_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-11a\" width=\"481\" height=\"114\" \/><\/p>\n<p><strong>12.Vapour pressure of pure water at 298 K is 23.8 mmHg. 50 g of urea (NH<sub>2<\/sub>CONH<sub>2<\/sub> ) is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its relative lowering.<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554032589_4b90b3e464_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-12\" width=\"468\" height=\"379\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895797356_3985e00d9a_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-12a\" width=\"438\" height=\"229\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626211770_8fce1c7711_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-12aa\" width=\"495\" height=\"251\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293674434_8f947e4545_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-12aaa\" width=\"498\" height=\"222\" \/><\/p>\n<p><strong>13. An element occurs in bcc structure. It has a cell edge length of 250 pm. Calculate the molar mass, if its density is 8.0 g cm<sup>-3<\/sup> . Also, calculate the radius of an atom of this element.<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895797066_df6e6ee9fa_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-13\" width=\"459\" height=\"125\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813575162_3f3a3300bf_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-13a\" width=\"497\" height=\"274\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895796856_7bcc35339c_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-13aa\" width=\"492\" height=\"198\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23624839390_b28c57efdb_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-14\" width=\"1041\" height=\"120\" \/><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895796756_3936b901ac_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-14\" width=\"469\" height=\"353\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626210780_5c56c10c63_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-14a\" width=\"480\" height=\"296\" \/><\/p>\n<p><strong>15. A solution containing 0.319 g of CrCl<sub>3<\/sub>-6H<sub>2<\/sub>0 was passed through a cation exchange resin and acid coming out of the cation exchange resin required 28.5 mL of 0.125 M NaOH. Determine the correct formula of the complex [molecular weight of the complex =266.5gmor<sup>1<\/sup>].<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839385691_312017eacf_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-15\" width=\"488\" height=\"223\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895796216_71ff046595_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-15a\" width=\"497\" height=\"486\" \/><\/p>\n<p><strong>16. (i) What happens when gelatin is mixed with gold sol?<\/strong><\/p>\n<p><strong>(ii) How do emulsifying agents stabilise the emulsion?<\/strong><\/p>\n<p><strong>(iii) Why does bleeding stop by rubbing moist alum?<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554031259_311f986dfa_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-16\" width=\"479\" height=\"187\" \/><\/p>\n<p><strong>17.(i) Give the name and structure of the initial material used in the industrial preparation of phenol.<\/strong><\/p>\n<p><strong>(ii) Write complete reaction for the bromination of phenol in aqueous and non-aqueous medium.<\/strong><\/p>\n<p><strong>(iii) Explain, why Lewis acid is not required in bromination of phenol.<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895795886_42a79d41e0_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-17\" width=\"477\" height=\"336\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293672764_06ef506db3_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-17a\" width=\"492\" height=\"327\" \/><\/p>\n<p><strong>18. In what respect do prontosil and salvarsan resemble? Is there any resemblance between azo dye and prontosil? Explain.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23295095003_c606af3210_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-18\" width=\"512\" height=\"420\" \/><\/p>\n<p><strong>19. Write the names and structures of monomers of<\/strong><\/p>\n<p><strong>(i) natural rubber. (ii) terylene.     (iii) teflon.<\/strong><\/p>\n<p><strong>Or<\/strong><\/p>\n<p><strong>Are polyesters and polyacrylates same? Justify your answer.<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839384391_a3a39a3a86_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-19\" width=\"479\" height=\"468\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813572742_b976cdece2_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-19a\" width=\"486\" height=\"267\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293736093_74b2070102_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-20\" width=\"644\" height=\"153\" \/><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293671024_31257295c1_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-20\" width=\"471\" height=\"178\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895794016_a28d2a7435_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-20a\" width=\"460\" height=\"171\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813572222_8f1a83bbd5_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-20aa\" width=\"487\" height=\"227\" \/><\/p>\n<p><strong>21. (i) What are the essential and non-essential amino acids? Give two examples of each type.<\/strong><\/p>\n<p><strong>(ii) What causes the disease sickel cell anaemia?<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626207960_3177a5b3f6_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-21\" width=\"476\" height=\"209\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23295093173_fb1b797a32_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-21a\" width=\"485\" height=\"120\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23552669159_28f38cf6af_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-22\" width=\"652\" height=\"206\" \/><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895793136_e30588d17d_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-22\" width=\"479\" height=\"292\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_D-2\"><\/span><strong>Section D<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>23. Oxygen atom transfer from N0<sub>2<\/sub> to CO produces NO and C0<sub>2<\/sub>.<\/strong><\/p>\n<p><strong>NO, (g) + CO(g)\u2014\u2013 \u25ba NO (g) + C0<sub>2<\/sub> (g)<\/strong><\/p>\n<p><strong>This reaction can also be utilised to remove poisonous gases like N0<sub>2<\/sub>, CO, etc., from the atmosphere.<\/strong><\/p>\n<p><strong>The rate equation for this reaction at a temperature less than 500 K is Rate =k [N0<sub>2<\/sub> ]<sup>2<\/sup>.<\/strong><\/p>\n<p><strong>Based on the above information, answer the following questions.<\/strong><\/p>\n<ul>\n<li><strong>Can this reaction occur in one bimolecular step?<\/strong><\/li>\n<li><strong>If the concentration of N0<sub>2<\/sub> is doubled, what will be the rate of the reaction?<\/strong><\/li>\n<li><strong>The addition of a catalyst increases the rate of the reaction. Why?<\/strong><\/li>\n<li><strong>What values do you get from the above passage?<\/strong><\/li>\n<\/ul>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626206760_5a690f9f22_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-23\" width=\"486\" height=\"315\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554027719_95ebaa0d4f_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-23a\" width=\"495\" height=\"264\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_E-2\"><\/span><strong>Section E<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>24. An alkene A (molecular formula C<sub>5<\/sub>H<sub>10<\/sub>) on ozonolysis gives a mixture of two compounds B and C . Compound B gives positive Fehling\u2019s test and also forms iodoform on treatment with I<sub>2<\/sub> and NaOH. Compound C does not give Fehling\u2019s test but forms iodoform. Identify the compounds A, B and C. Write the reaction for ozonolysis and formation of iodoform from B and C.<\/strong><\/p>\n<p><strong>Or<\/strong><\/p>\n<p><strong>When liquid A is treated with a freshly prepared ammoniacal silver nitrate solution, it gives bright silver mirror. The liquid forms a white crystalline solid on treatment with sodium hydrogen sulphite. Liquid B also forms a white crystalline solid with sodium hydrogen sulphite but it does not give test with ammoniacal silver nitrate. Which of the two liquids is aldehyde? Write the chemical equations of these reactions also.<\/strong><\/p>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293669064_42888d9c52_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24\" width=\"475\" height=\"353\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839381771_85be418624_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24a\" width=\"493\" height=\"201\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293668704_b08fb8c59e_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24aa\" width=\"466\" height=\"340\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554027029_ba7bc33bf9_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24aaa\" width=\"509\" height=\"131\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23626205890_cabcd4a2d4_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24aaaa\" width=\"493\" height=\"232\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921863665_59b08b38a5_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-24aaaaa\" width=\"496\" height=\"253\" \/><\/p>\n<p><strong>25. A violet compound of manganese A decomposes on heating to liberate oxygen and compounds B and C of manganese are formed. Compound C reacts with KOH in the presence of potassium nitrate to give compound<\/strong><\/p>\n<p><strong>On heating compound C with cone. H<sub>2<\/sub>S0<sub>4<\/sub> and NaCl, chlorine gas is liberated and a compound D of manganese along with other products is formed. Identify compounds A to D and also explain the reactions involved.<\/strong><\/p>\n<p><strong>Or<\/strong><\/p>\n<ul>\n<li><strong>Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III) catalyse the reaction between iodide and persulphate ions?<\/strong><\/li>\n<li><strong>Mention any three processes where transition metals act as catalysts.<\/strong><\/li>\n<\/ul>\n<p><strong>Ans.<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554026169_b1cf1670a0_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-25\" width=\"470\" height=\"225\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23293667354_d0e354cdde_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-25a\" width=\"502\" height=\"184\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23813568762_53e5b321e9_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-25aa\" width=\"497\" height=\"168\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23554025849_f3480f8a06_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-25aaa\" width=\"504\" height=\"192\" \/><\/p>\n<p><strong>26. Assign reasons for the following.<\/strong><\/p>\n<ul>\n<li><strong>Describe the favourable conditions for the manufacturing of (a) ammonia by Haber\u2019s process, and (b) sulphuric acid by contact process.<\/strong><\/li>\n<li><strong>Draw the structures of the following.<\/strong><\/li>\n<li><strong>PCl<sub>5<\/sub>(g) (b) S<sub>8<\/sub>(g) (c) C1F<sub>3<\/sub> (g)<\/strong><\/li>\n<\/ul>\n<p><strong>Or<\/strong><\/p>\n<p><strong>Assign reasons for the following.<\/strong><\/p>\n<ul>\n<li><strong>Sulphur in vapour phase is paramagnetic.<\/strong><\/li>\n<li><strong>Ammonia (NH<sub>3<\/sub>) has greater affinity for protons than phosphine (PH<sub>3<\/sub>).<\/strong><\/li>\n<li><strong>The negative value of electron gain enthalpy of fluorine is less than that of chlorine.<\/strong><\/li>\n<li><strong>BiCl<sub>3<\/sub> is less covalent than PC1<sub>3<\/sub>. Explain.<\/strong><\/li>\n<li><strong>In noble gases, only xenon is known to form well established chemical compounds.<\/strong><\/li>\n<\/ul>\n<p><strong>Ans.<\/strong><\/p>\n<p><strong> <\/strong><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921862445_39b245ae6f_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26a\" width=\"454\" height=\"310\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23295089863_bd66d2f8bc_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26aa\" width=\"488\" height=\"401\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23839379651_54c2ed4d28_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26aaa\" width=\"490\" height=\"228\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23921862095_b40694a99c_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26aaaa\" width=\"499\" height=\"339\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23295089333_0d28718001_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26aaaaa\" width=\"495\" height=\"277\" \/><br \/>\n<img loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/23895789236_66ec0560c1_o.png\" alt=\"cbse-sample-papers-for-class-12-sa2-chemistry-solved-2016-set-10-26aaaaaa\" width=\"501\" height=\"189\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CBSE Sample Papers &#8211; Chemistry 2016 Set 10 Get CBSE Sample Papers for Class 12 Chemistry on Infinity Learn for 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