{"id":17611,"date":"2022-01-25T11:34:49","date_gmt":"2022-01-25T06:04:49","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=17611"},"modified":"2024-10-08T12:06:29","modified_gmt":"2024-10-08T06:36:29","slug":"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/","title":{"rendered":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry"},"content":{"rendered":"<h2><span style=\"color: #00bdeb;\"><strong>JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry<\/strong><\/span><\/h2>\n<p><strong>1.Conductivity (unit Siemen\u2019s S) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is    (2002)<\/strong><br \/>\n<strong> 1) Sm mol<sup>-1<\/sup>                    2) Sm<sup>2<\/sup> mol<sup>-1<\/sup><\/strong><br \/>\n<strong> 3) S<sup>-2<\/sup>m<sup>2<\/sup> mol\u2019<sup>1<\/sup>                 4) S<sup>2<\/sup>m<sup>2<\/sup> mol\u2019<sup>1<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-1\" width=\"378\" height=\"62\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392713094_6d4346643e_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-2\" width=\"383\" height=\"108\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726091300_cab56be26a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-2\" width=\"390\" height=\"101\" \/><\/p>\n<p><strong>3.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25724791270_47a277723a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-3\" width=\"374\" height=\"170\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397377403_34e1b84f77_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-3\" width=\"319\" height=\"43\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25904707812_c345079bd9_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-4\" width=\"334\" height=\"156\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932026191_d983596902_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-4\" width=\"330\" height=\"50\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392712674_634902673d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-5\" width=\"347\" height=\"178\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726090480_5a05580da8_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-5\" width=\"402\" height=\"126\" \/><\/p>\n<div class=\"card\" style=\"text-align: center;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/test-series\/jee-12-aits?utm_source=surge&amp;utm_medium=Org&amp;utm_campaign=AITS\"><br \/>\n<img loading=\"lazy\" class=\" lazyloaded\" style=\"width: 100%; border-radius: 10px;\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/10\/class-12-jee-test-series.jpg\" alt=\"class 12 jee test series\" width=\"1201\" height=\"636\" data-src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/10\/class-12-jee-test-series.jpg\" \/><\/a><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/test-series\/jee-12-aits?utm_source=surge&amp;utm_medium=Org&amp;utm_campaign=AITS\"><button><strong>All India Test Series for Class 12 JEE Main &amp; Advanced 2025<\/strong><\/button><\/a><\/p>\n<div style=\"text-align: center;\">Boost Your Preparation With Our All India Test Series for Class 12 JEE Main &amp; Advanced 2025<\/div>\n<\/div>\n<p><strong>6.When KMn0<sub>4<\/sub> acts as an oxidising agent and ultimately forms [MnOJ<sup>-1<\/sup>, Mn0<sub>2<\/sub>, Mn<sub>2<\/sub>0<sub>3<\/sub> and Mn<sup>+2<\/sup>. Then the number of electrons trans\u00adferred in each case respectively is (2002)<\/strong><br \/>\n<strong> 1) 4, 3, 1, 5        2) 1, 5, 3, 7<\/strong><br \/>\n<strong>3)1,3, 4, 5               4)3, 5, 7,1<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397376603_6542235198_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-6\" width=\"382\" height=\"122\" \/><\/p>\n<p><strong>7.Which of the following is a redox reaction ?(2002)<\/strong><br \/>\n<strong>(1)NaCl + KN0<sub>3<\/sub> -\u00bb NaN0<sub>3<\/sub> + KC1<\/strong><br \/>\n<strong>(2)CaC<sub>2<\/sub>0<sub>4<\/sub> + 2HC1 -&gt; CaCl<sub>2<\/sub> + H<sub>2<\/sub>C<sub>2<\/sub>0,<\/strong><br \/>\n<strong>(3)Mg(OH)<sub>2<\/sub> + 2NH<sub>4<\/sub>C1 -&gt; MgCl<sub>2<\/sub> + 2NH<sub>4<\/sub>OH<\/strong><br \/>\n<strong>(4)Zn + 2AgCN 2Ag + Zn(CN)<sub>2<\/sub><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394030004_41661968b6_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-7\" width=\"368\" height=\"54\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392712414_86a0c548e6_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-8\" width=\"379\" height=\"145\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726089670_903624e030_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-8\" width=\"342\" height=\"160\" \/><\/p>\n<p><strong>9.Standard reduction electrode potentials of three metals A, B and C are respectively + 0.5V, -3.0 V and -1.2 V. The reducing powers are in the order       (2003)<\/strong><br \/>\n<strong>1) A &gt; B &gt; C                  2) C &gt; B &gt; A<\/strong><br \/>\n<strong>3) A &gt; C &gt; B                  4) B &gt; C &gt; A<\/strong><br \/>\n<strong>Ans.<\/strong>(4) Reductional potential is least for B. Hence B is the best reductant.<\/p>\n<p><strong>10.When during electrolysis of a solution of AgN0<sub>3<\/sub> 9650 coloumbs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be (2003)<\/strong><br \/>\n<strong>1) 10.8 g                         2) 21.6 g<\/strong><br \/>\n<strong>3) 108 g                          4) 1.08 g<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906035002_d1ef91261b_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-10\" width=\"327\" height=\"98\" \/><\/p>\n<p style=\"text-align: center;\"><button style=\"width: 50%;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/one-stop-solutions-for-jee-main-prep?utm_source=surge&amp;utm_medium=interlinking\"><strong>Enroll Now to One Stop Solutions for IIT JEE Prep<\/strong><\/a><\/button><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930688771_5a8a33f848_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-11\" width=\"380\" height=\"190\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906034702_975b18760e_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-11\" width=\"317\" height=\"160\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25724789980_be20ae75c2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-12\" width=\"439\" height=\"222\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932024051_74c3f75802_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-12\" width=\"368\" height=\"92\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930688171_71a341a736_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-13\" width=\"332\" height=\"131\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932023721_eef7317970_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-13\" width=\"368\" height=\"47\" \/><\/p>\n<p style=\"text-align: center;\"><button style=\"width: 50%;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/online-mock-tests?utm_source=surge&amp;utm_medium=interlinking\"><strong>Free Online Mock Tests For IIT-JEE, NEET And CBSE Exams<\/strong><\/a><\/button><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25724789050_4e04d51979_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-14\" width=\"398\" height=\"137\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397374903_099596926b_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-14\" width=\"386\" height=\"62\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25396137503_8ddaf8c154_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-15\" width=\"412\" height=\"128\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932023211_69e82615f7_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-15\" width=\"355\" height=\"173\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25396137243_d1d1695cc9_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-16\" width=\"403\" height=\"218\" \/><br \/>\n<strong>Ans.<\/strong>(3) Ecell increases, hence k increases.<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392709924_161c4a8188_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-17\" width=\"334\" height=\"112\" \/><br \/>\n<strong>Ans.<\/strong>(1) Oxidation potential of Cr is least. So it changes easily from +2 to +3 state<\/p>\n<p><strong>18.Excess of KI reacts with CuS0<sub>4<\/sub> solution and then Na<sub>2<\/sub>S<sub>2<\/sub>0<sub>3<\/sub> solution is added to it. Which of the statements is incorrect for this reaction?<\/strong><br \/>\n<strong>(1)Cu<sub>2<\/sub>I<sub>2<\/sub> is reduced<\/strong><br \/>\n<strong>(2)Evolved I<sub>2<\/sub> is reduced<\/strong><br \/>\n<strong>(3)Na<sub>2<\/sub>S<sub>2<\/sub>0<sub>3<\/sub>is oxidized    4) CuL, is formed<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932022961_b3e535fd80_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-18\" width=\"350\" height=\"59\" \/><\/p>\n<p><strong>19.The highest electrical conductivity of the following aqueous solutions is of (2005)<\/strong><br \/>\n<strong>(1)1 M acetic acid<\/strong><br \/>\n<strong>(2)1 M chloroacetic acid<\/strong><br \/>\n<strong>(3)1 M fluoroacetic acid<\/strong><br \/>\n<strong>(4)1 M difluoroacetic acid<\/strong><br \/>\n<strong>Ans.<\/strong>(4) CF<sub>2<\/sub>COOH is stronger acid and furnishes more ions.<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25904704142_545abeb5c2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-20\" width=\"417\" height=\"216\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906032682_c65ea06b2a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-20\" width=\"375\" height=\"93\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930684161_ed106abb8a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-21\" width=\"395\" height=\"144\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906032422_768205e7e9_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-21\" width=\"319\" height=\"52\" \/><\/p>\n<p><strong>22.The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is(2005)<\/strong><br \/>\n<strong>1) +4          2) +6            3) +2           4) +3<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726086730_5a17d03797_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-22\" width=\"332\" height=\"109\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930683211_30971cb286_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-23\" width=\"398\" height=\"118\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726086510_1ec91c5074_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-23\" width=\"343\" height=\"185\" \/><\/p>\n<p><strong>24.The following mechanism has been proposed for the reaction of NO with Br<sub>2<\/sub> to form NOBr: NO(g) + Br<sub>2<\/sub>(g) \u2014NOBr<sub>2<\/sub>(g) NOBr<sub>2<\/sub>(g)+NO(g) -\u00bb 2NOBr(g).If the second step is the rate determining step, the order of the reaction with respect to NO(g) is   (2006)<\/strong><\/p>\n<p><strong>1) 1            2) 0              3) 3             4) 2<\/strong><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394026384_fed7634c8c_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-24\" width=\"371\" height=\"223\" \/><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25724784610_dee82263fe_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-25\" width=\"410\" height=\"232\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397372423_2b72e91477_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-25\" width=\"370\" height=\"226\" \/><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906031062_7fc264c711_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-25-1\" width=\"417\" height=\"179\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930681111_392b209619_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-26\" width=\"399\" height=\"177\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726085320_b9eb06eceb_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-26\" width=\"349\" height=\"244\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930680641_a5e650f62d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-27\" width=\"316\" height=\"266\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397371503_4ee3bd0278_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-27\" width=\"334\" height=\"75\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392704344_a07071332f_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-28\" width=\"331\" height=\"112\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726084950_2d1099f7f3_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-28\" width=\"348\" height=\"289\" \/><\/p>\n<p><strong>29.Amount of oxalic acid present in a solution can be determined by its titration with KMn0<sub>4 <\/sub>solution in the presence of H<sub>2<\/sub>S0<sub>4<\/sub>. The titration gives unsatisfactory result when carried out in the presence of HC1, because HC1     (2008)<\/strong><br \/>\n<strong>(1)gets oxidised by oxalic acid to chlorine<\/strong><br \/>\n<strong>(2)furnishes H<sup>+<\/sup> ions in addition to those from oxalic acid<\/strong><br \/>\n<strong>(3)reduces permanganate to Mn<sup>2+<\/sup><\/strong><br \/>\n<strong>(4)Oxidises oxalic acid to carbon dioxide and water<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932019501_63a94ee5af_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-29\" width=\"375\" height=\"92\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25392704154_3b29b0c5a5_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-30\" width=\"385\" height=\"134\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397370593_0dce96a0f3_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-30\" width=\"358\" height=\"234\" \/><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25397370163_3021520a54_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-30-1\" width=\"283\" height=\"156\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930679481_ed0245a68e_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-31\" width=\"356\" height=\"119\" \/><br \/>\n<strong>Ans.<\/strong>(1) Mn<sup>2+<\/sup> is more stable.<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25930679131_563122cd02_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-32\" width=\"388\" height=\"196\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394023624_3eb9b7176b_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-32\" width=\"345\" height=\"142\" \/><\/p>\n<p><strong>33.A vessel at 1000 K contains C0<sub>2<\/sub> with a pressure of 0.5 atm. Some of the C0<sub>2<\/sub> is converted in to CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of K is (2011)<\/strong><br \/>\n<strong>1) 0.3 atm                      2) 0.18 atm<\/strong><br \/>\n<strong>3) 1.8 atm                      4) 3 atm<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932018331_43d350ae07_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-33\" width=\"335\" height=\"171\" \/><\/p>\n<p><strong>34.The standard reduction potentials for Zn<sup>2+<\/sup> \/ Zn, Ni<sup>2+<\/sup> \/ Ni and Fe<sup>2+<\/sup> \/ Fe are -0.76, -0.23 and -0.44 V respectively. The reaction, x + y<sup>2+<\/sup>-&gt;x<sup>2+<\/sup> + y will be spontaneous when                      (2012)<\/strong><br \/>\n<strong>1) X = Ni, Y = Fe           2)X = Ni,Y = Zn<\/strong><br \/>\n<strong>3) X = Fe, Y = Zn          4) X = Zn, Y = Ni<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726082980_c88cc732f1_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-34\" width=\"458\" height=\"154\" \/><\/p>\n<p><strong>35.How many litres of water must be added to 1 litre of an aqueous solution of HC\/ with a pH of 1 to create an aqueous solution with pH of 2 ? (2013)<\/strong><br \/>\n<strong>1) 0.1 L 2) 0.9 L 3) 2.0 L 4) 9.0 L<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394022684_24b206bba3_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-35\" width=\"258\" height=\"77\" \/><\/p>\n<p><strong>36.Given below are the half-cell reactions \u2018 Mn<sup>2+<\/sup> + 2e -&gt; Mn; E\u00b0=-1.18V 2(Mn<sup>3+<\/sup> + e- -&gt; Mn<sup>2+<\/sup>); E\u00b0 = +1.51V The E\u00b0 for 3Mn<sup>2+<\/sup> -&gt; Mn + 2Mn<sup>3+<\/sup> will be<\/strong><br \/>\n<strong>(1)-0.33 V; the reaction will occur (2014)<\/strong><br \/>\n<strong>(2)-2.69 V; the reaction will not occur<\/strong><br \/>\n<strong>(3)-2.69 V; the reaction will occur<\/strong><br \/>\n<strong>(4)-0.33 V; the reaction will not occur<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394022644_1835a2051a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-36\" width=\"294\" height=\"29\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25393673824_60f7c9d4f5_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-37\" width=\"399\" height=\"186\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726082630_69a76172d7_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-37\" width=\"233\" height=\"33\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25725737190_c3f2253c2d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-38\" width=\"404\" height=\"213\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394022574_fe4170907c_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-38\" width=\"357\" height=\"183\" \/><\/p>\n<p><strong>39.Two Faraday of electricity is passed through a solution of CuS0<sub>4<\/sub>. The mass of copper deposited at the cathode is (at mass of Cu = 63.5 amu)                     (2015)<\/strong><br \/>\n<strong>1) Og 2) 63.5g 3) 2g 4) 127g<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394022304_f2e16ec068_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry-39\" width=\"284\" height=\"85\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry 1.Conductivity (unit Siemen\u2019s S) is directly proportional [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"JEE Mains","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.","custom_permalink":"study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/"},"categories":[21],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry - Infinity Learn by Sri Chaitanya\" \/>\n<meta property=\"og:description\" content=\"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/\" \/>\n<meta property=\"og:site_name\" content=\"Infinity Learn by Sri Chaitanya\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/InfinityLearn.SriChaitanya\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-25T06:04:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-08T06:36:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@InfinityLearn_\" \/>\n<meta name=\"twitter:site\" content=\"@InfinityLearn_\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Prasad Gupta\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"17 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry - Infinity Learn by Sri Chaitanya","description":"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/","og_locale":"en_US","og_type":"article","og_title":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry - Infinity Learn by Sri Chaitanya","og_description":"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.","og_url":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/","og_site_name":"Infinity Learn by Sri Chaitanya","article_publisher":"https:\/\/www.facebook.com\/InfinityLearn.SriChaitanya\/","article_published_time":"2022-01-25T06:04:49+00:00","article_modified_time":"2024-10-08T06:36:29+00:00","og_image":[{"url":"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png"}],"twitter_card":"summary_large_image","twitter_creator":"@InfinityLearn_","twitter_site":"@InfinityLearn_","twitter_misc":{"Written by":"Prasad Gupta","Est. reading time":"17 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/infinitylearn.com\/surge\/#organization","name":"Infinity Learn","url":"https:\/\/infinitylearn.com\/surge\/","sameAs":["https:\/\/www.facebook.com\/InfinityLearn.SriChaitanya\/","https:\/\/www.instagram.com\/infinitylearn_by_srichaitanya\/","https:\/\/www.linkedin.com\/company\/infinity-learn-by-sri-chaitanya\/","https:\/\/www.youtube.com\/c\/InfinityLearnEdu","https:\/\/twitter.com\/InfinityLearn_"],"logo":{"@type":"ImageObject","@id":"https:\/\/infinitylearn.com\/surge\/#logo","inLanguage":"en-US","url":"","contentUrl":"","caption":"Infinity Learn"},"image":{"@id":"https:\/\/infinitylearn.com\/surge\/#logo"}},{"@type":"WebSite","@id":"https:\/\/infinitylearn.com\/surge\/#website","url":"https:\/\/infinitylearn.com\/surge\/","name":"Infinity Learn by Sri Chaitanya","description":"Surge","publisher":{"@id":"https:\/\/infinitylearn.com\/surge\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/infinitylearn.com\/surge\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#primaryimage","inLanguage":"en-US","url":"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png?v=1642486769","contentUrl":"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png?v=1642486769","width":409,"height":67},{"@type":"WebPage","@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#webpage","url":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/","name":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry - Infinity Learn by Sri Chaitanya","isPartOf":{"@id":"https:\/\/infinitylearn.com\/surge\/#website"},"primaryImageOfPage":{"@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#primaryimage"},"datePublished":"2022-01-25T06:04:49+00:00","dateModified":"2024-10-08T06:36:29+00:00","description":"Get JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry on Infinity learn.","breadcrumb":{"@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/infinitylearn.com\/surge\/"},{"@type":"ListItem","position":2,"name":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry"}]},{"@type":"Article","@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#article","isPartOf":{"@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#webpage"},"author":{"@id":"https:\/\/infinitylearn.com\/surge\/#\/schema\/person\/143c89c9c2f5e56ed91f96dde47b0b05"},"headline":"JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry","datePublished":"2022-01-25T06:04:49+00:00","dateModified":"2024-10-08T06:36:29+00:00","mainEntityOfPage":{"@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#webpage"},"wordCount":747,"publisher":{"@id":"https:\/\/infinitylearn.com\/surge\/#organization"},"image":{"@id":"https:\/\/infinitylearn.com\/surge\/study-material\/notes\/jee-main-previous-year-papers-questions-with-solutions-chemistry-redox-reactions-and-electrochemistry\/#primaryimage"},"thumbnailUrl":"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906037432_4a7ef6ffb2_o.png","articleSection":["Study Materials"],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/infinitylearn.com\/surge\/#\/schema\/person\/143c89c9c2f5e56ed91f96dde47b0b05","name":"Prasad Gupta","image":{"@type":"ImageObject","@id":"https:\/\/infinitylearn.com\/surge\/#personlogo","inLanguage":"en-US","url":"https:\/\/secure.gravatar.com\/avatar\/200104b443e586c76c46cadc113d931c?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/200104b443e586c76c46cadc113d931c?s=96&d=mm&r=g","caption":"Prasad Gupta"},"url":"https:\/\/infinitylearn.com\/surge\/author\/prasad\/"}]}},"_links":{"self":[{"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/posts\/17611"}],"collection":[{"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/comments?post=17611"}],"version-history":[{"count":0,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/posts\/17611\/revisions"}],"wp:attachment":[{"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/media?parent=17611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/categories?post=17611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/tags?post=17611"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/infinitylearn.com\/surge\/wp-json\/wp\/v2\/table_tags?post=17611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}