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The issue presents selected topics such as Structure of Atom, Redox Reactions, Electrochemistry, Coordination Compounds, the p-Block Elements, and Polymers, supported by feature sections and concept mapping. It includes PAPER-I with SECTION 1 (maximum marks: 12), consisting of four multiple-choice questions, each with a clear marking scheme and evaluated options.","Disclaimer : The content available in MTG digital/physical books is intellectual property of MTG Learning Media Pvt Ltd. Paid content on this website after purchase is not entitled for free distribution on whatsapp, telegram, twitter, facebook, and all other social media and digital channels. The registered owner/admin/ individual of any digital channel will be liable for an infringement of the copyright for illegally using the material / copyrighted content of MTG Learning Media Pvt Ltd.  \nVOLUME 35 No. 7 July 2026  \n\n| \u003Cbr>\u003Cbr> | \u003Cbr> |\n| --- | --- |\n\nCompetition Edge  \nSubscribe online at [www.mtg.in](www.mtg.in)  \n\n| SUBSCRIPTION PLAN |  |  |  |  |\n| --- | --- | --- | --- | --- |\n| Subject | Format | 1 Year | 2 Years | 3 Years |\n| Individual\u003Cbr>Physics  Chemistry\u003Cbr>Mathematics  Biology | Print issue | `749/ - | `1349/ - | `1799/ - |\n|  | Print + Digital | `1150/ - | `1850/ - | `2400/ - |\n| Combo of 3 Magazines\u003Cbr>Physics, Chemistry, Biology\u003Cbr>Physics, Chemistry, Mathematics | Print issue | `2200/ - | `4000/ - | `5400/ - |\n|  | Print + Digital | `3000/ - | `5000/ - | `6600/ - |\n| Combo of 4 Magazines\u003Cbr>Physics, Chemistry, Mathematics, Biology | Print issue | `2800/ - | `5200/ - | `6300/ - |\n|  | Print + Digital | `3800/ - | `6399/ - | `7800/ - |\n| Courier Charges\u003Cbr>Add to your subscription amount for quicker & traceable delivery |  | `800/ - | `960/ - | `1440/ - |\n\nPrinted and Published by Mahabir Singh on behalf of MTG Learning Media Pvt. Ltd. Printed at HT Media Ltd., B-2, Sector-63, Noida, UP-201307 and published at 406, Taj Apartment, Ring Road, Near Safdarjung Hospital, New Delhi-110029. Editor : Anil Ahlawat  \nReaders are advised to make appropriate thorough enquiries before acting upon any advertisement published in this magazine. Focus/ Infocus features are marketing incentives. MTG does not vouch or subscribe to the claims and representations made by advertisers. All disputes are subject to Delhi jurisdiction only.  \nCopyright© MTG Learning Media (P) Ltd.  \nAll rights reserved. Reproduction in any form is prohibited.  \nJEE Advanced Solved Paper 2026 9  \nWBJEE Solved Paper 2026 23  \nAP EAPCET Solved Paper 2026 31  \nQuiz Club 91  \nClass 11  \nCBSE Warm-up! 39  \nStructure of Atom  \nBrush up for NEET/JEE 55  \nRedox Reactions | Hydrogen  \nClass 12  \nChemistry in Focus 47  \nBonding in Coordination Compounds  \nConcept Map 50  \nCoordination Compounds  \nCBSE Warm-up! 69  \nElectrochemistry  \nBrush up for NEET/JEE 77  \nThe p-Block Elements | Polymers  \nCHEMISTRY TODAY | JULY ‘26  7  \n8  CHEMISTRY TODAY | JULY ‘26  \nPAPER-I  \nSECTION 1 (MAXIMUM MARKS : 12)  \n• This section contains FOUR (04) questions.  \n• Each question has FOUR options (a), (b), (c) and (d). ONLY ONE of these four options is the correct answer.  \n• For each question, choose the option corresponding to the correct answer.  \n• Answer to each question will be evaluated according to the following marking scheme:  \nFull Marks : +3 If ONLY the correct option is  \nchosen;  \nZero Marks : 0 If none of the options is chosen (i.e., the question is unanswered);  \nNegative Marks : –1 In all other cases.  \n1. An ideal gas (0.5 mol), initially at 2 bar pressure,  \nis compressed at a constant temperature of 600 Kin two steps: first, against a constant external pressure of P bar (2 \u003C P \u003C 8), and then against constant external pressure of 8 bar. At each step, the compression is stopped only when the pressure of the gas becomes equal to the external pressure. The total work done on the gas in these steps is W. Considering all possible values of P (2 \u003C P \u003C 8) and taking the gas constant as R (in J K−1 mol−1), the minimum value of | W| (in J) is (a) 207R (b) 600R (c) 630R (d) 900R  \n2. For a reversible reaction R  P, at constant temperature, both the forward and the backward reactions are first order elementary reactions with rate constants kf and kb, respectively. At time zero, the concentration of R is [R]0 and the concentration of P is zero. At any given time, [R] and [P] a","cbCaiamBX7aXVeeU","https://ap.wps.com/l/cbCaiamBX7aXVeeU","pdf",40681746,1,100,"English","en",105,"# PAPER-I\n## SECTION 1 (MAXIMUM MARKS : 12)\n## Competition Edge\n## Class 11 Chemistry in Focus\n## Class 12 Chemistry in Focus","[{\"question\":\"What is the marking scheme for the four questions in PAPER-I SECTION 1?\",\"answer\":\"Full Marks are +3 for choosing only the correct option. Zero marks are 0 if unanswered. 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