www.mtq.in CBSE CUET NEET JEE September 2022 Pages 80 | 40 CHEMISTRY se a te ees UP for CBS je : b q Sa oe SOLVED PAPERS mn ae SESSION-2 - Trust of more than 1 oe ek Sine CON CEPT CHAPTERWISE PRACTICE PAPER MAP CUET (UG) ; CELEBRATING HARDWORK OF ALLENITES WITH GLORIOUS RESULT AIR-2 SNEHA PAREEK 2 Year Regular ALLEN Classroom Student All India Female Topper 34 in Top 100 All India Ranks A ~~ Overall 100 Percentile Overall 100 Percentile SHRENIK MOHAN SAKALA ARUDEEP KUMAR NAVYA Classroom Classroom Classroom Maharashtra Topper Bihar Topper Rajasthan Topper AIR AIR 24 Overall 100 Percentile Overall 100 Percentile Overall 100 Percentile KANISHK SHARMA KUSHAGRA SRIVASTAVA KRISHNA SHARMA Classroom Classroom Classroom Uttar Pradesh Topper Jharkhand Topper Rajasthan Topper ALLEN Result: JEE (Main) 2022 Overall 100 Percentile ALLEN Students Eligible for JEE (Adv.) 2022 17520 CCP : 12043 | DLP : 5477 174 In Top 500 All India Ranks 333 In Top 1000 All India Ranks 13 State Toppers are ALLENites 191 Scored 100%ile in Individual Subjects Herat Compson Authenticity of Result: Power of ALLEN Admission Announcement (Session 2022-23) JEE (Main+Adv.) | JEE (Main) | NEET (UG) | NTSE | OLYMPIADS | PNCF (Class 6" to 10") Commerce | Global Studies | IntelliBrain | Online (Live & Recorded) Courses t / A ALLEN'S Talent Encouragement Exam Mid #SuccessKaAssurance = ALLEN) nae CAREER INSTITUTE INDIA'S BIGGEST Talent Encouragement Exam For Class 5" to 10" Students _ Exam Dates 09 & 16 Oct. 2022 _ Corporate Office: ALLEN Career Institute Pvt. Ltd. “SANKALP’, CP-6, Indra Vihar, Kota (Raj.)-324005 a) SCHOLARSHIPS Qz) CASH PRIZES 1,25 one Scan QR to Register Gee ® tallentex.com % 0744-2750202 Email: [email protected] Web.: www.allen.ac.in Helpline: 0744-3556677, 2757575 Whatsapp : 0744-2757700 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. More than More than 80% | 80% _ Same or _ same or similar MCQs similar MCQs More than 85% _ same or similar MCQs More than More than 90% | 90% Trust MTG coy Con for getting it right, year after year Over the last 5 years, MTG has averaged a hit rate of 85% when it comes to curating the right content for your NEET preparation. Which means approx. 3.5 out of 4 questions in NEET were either exactly the same as, or similar to, questions in MTG's NEET books. The credit for this mind-blowing feat goes to MTG's skilled and experienced editorial team which painstakingly goes through volumes of NCERT subject matter that forms the basis for NEET, to create superior and relevant study material that has a high chance of success for its users. Proof lies in the pudding, right! #1 Bestseller on Amazon gg y= iol) NEET 95s a = CHAMP¥ON G U | DE —- + a hae NEET V NEET ask = BIOLOGY Chemistry i To find out which MTG NEET book is best-suited to your needs, Call our NEET helpline 0124-6601200 today. Or email [email protected] now. Visit bit.ly/mtg-neet to buy online. ala de bi i NEET Books on mtg.in Scan to buy on Amazon.in CHEMISTRY TODAY | SEPTEMBER'22 WtG Last Minute Check on your JEE Readiness __ ONLINE ft] ONLINE [Wee] , ONLINE [te] > 0 SOLVED 0 SOLVED i 0 SOLVED oR Jet 2028 \ PAPERS \ PAPERS i PAPERS ~ 675/- The Wait is Over! MTG Presents you all the 80 Fully Solved online Question Papers of JEE Main of past 4 years (2022-2019) conducted by NTA with Chapterwise graphical analysis showing the weightage of chapters and Mock Test Papers as per latest pattern of JEE Main. Get the maximum benefit from Ma ke It Ha ppen, the book through personalised course on Pedagogy app. The C RAC K J E F Ma | n best preparation for tomorrow is doing your best today so, go and get your copy. Get the complete feel of Online exam by attempting tests on computers Highlights See. * Fully Solved Authentic 80 Online Papers * 6895 Questions for Practice * Chapterwise Tabular and Graphical Analysis Showing the Weightage of Chapters * 5MTPsas per the latest JEE Main pattern Practice Online Tests to Predict Your Rank Available at all leading book shops throughout the country. To buy online visit www.mtg.in. For more information or for help in placing your order, Call 0124-6601200 or email: [email protected] SEBID EaDiote Spal) [tote JEE Books on mtg.in 0 CHEMISTRY TODAY | sePTEMBER'22 Individual Subscription Rates » a £| CONTENTS CHEMISTRY Managing Editor Mahabir Singh Editor Anil Ahlawat Subscribe online at WWW.mtg.in Combined Subscription Rates 9 months 15 months 27 months 9 months 15 months 27 months Mathematics Today 300 Chemistry Today 300 Physics For You 300 Biology Today 300 500 850 500 850 500 850 500 850 PCM 900 1400 2500 PCB 900 1400 2500 PCMB 1200 1900 3400 Send D.D/M.0 in favour of MTG Learning Media (P) Ltd. Payments should be made directly to : MTG Learning Media (P) Ltd, Plot No. 99, Sector 44, Gurugram - 122003 (Haryana) We have not appointed any subscription agent. May Volume 31 No. 9 September 2022 Corporate Office: Plot 99, Sector 44 Institutional area, Gurugram -122 003 (HR). Tel :0124-6601200 e-mail : [email protected] website : www.mtg.in Regd. Office: 406, Taj Apartment, Near Safdarjung Hospital, New Delhi - 110029. Competition Edge JEE Main 7 Solved Paper 2022 (Session - 2) AMU Engineering 13 Solved Paper 2022 CUET (UG) Chapterwise Practice Paper 19 Solid State | Solutions Class 11 Brush Up for NEET / JEE 26 Some Basic Concepts of Chemistry | Structure of Atom Monthly Test Drive 37 States of Matter | Thermodynamics Concept Map 40 Aromatic Hydrocarbons CBSE Warm Up 42 Classification of Elements and Periodicity in Properties | Chemical Bonding and Molecular Structure Class 12 Brush Up for NEET / JEE 50 Solid State | Solutions CBSE Warm Up 64 The d- and f-Block Elements Monthly Test Drive 72 Aldehydes, Ketones and Carboxylic Acids | Amines Printed 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 Readers are adviced to make appropriate thorough enquiries before acting upon any advertisements 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. Copyright© MTG Learning Media (P) Ltd. All rights reserved. Reproduction in any form is prohibited. CHEMISTRY TODAY | SEPTEMBER ‘22 © WEG The Best tool for success In JEE Main 21 Years’ JEE Main Chapterwise-Topicwise Solutions Physics, Chemistry and Mathematics contain not only chapterwise - topicwise questions that have appeared over the last 217 years in JEE Main / AIEEE but also their complete solutions. Needless to say these books are essential for any student to compete successfully in JEE Main. 21 Years | Years |: Years MM + 2012-2008 MERE | MM + 2O02-DOOF AIEEE MIN & 2002-20? AIEEE HIGHLIGHTS: Visit + Chapterwise-Topicwise Questions (Online & Offline) of last 21 years" www.mtg.in (2022-2002) of JEE Main! AIEEE for latest offers +» Chapterwise -Topicwise segregation of questions to help you assess and to buy the level of effort required to succeed online! An unmatched series with more than 1740 pages filled with detailed solutions by experts i : ] Available at all leading book shops throughout India, MTG Learning Media (P) Ltd. For more information or for help in placing your order, Plot #99, Sector 44, Gurugram —122003(HR) | cali 0124-6601200 or e-mail:[email protected] CHEMISTRY TODAY | SEPTEMBER ‘22 Held on SOLVED PAPER 25" july, Morning Shift JEE2022 1. 3. | SECTION-A (MULTIPLE CHOICE QUESTIONS) _| SO,Cl, on reaction with excess of water results into acidic mixture SO,Cl, + 2H,0 ——> H,SO, + 2HCl 16 moles of NaOH is required for the complete neutralisation of the resultant acidic mixture. The number of moles of SO,Cl, used is (a) 16 (b) 8 (c) 4 (d) 2 Which of the following sets of quantum numbers is not allowed? (a) n=3,1=2,m, 1 =0,s=+— 2 1 (b) n=3,1=2,m, =-2,s sa (c) 3,18 my 8 (d) n=3,1=0, m =0,s=-— The depression in freezing point observed for a formic acid solution of concentration 0.5 mL L! is 0.0405°C. Density of formic acid is 1.05 g mL”. The Van't Hoff factor of the formic acid solution is nearly (Given for water kp= 1.86 K kg mol’) (a) 08 (b) 11 = (c) 19 (d) 2.4 20 mL of 0.1 M NH,OH is mixed with 40 mL of 0.05 M HCl. The pH of the mixture is nearest to (Given : K,(NH,OH) = 1 x 107, log 2 = 0.30, log 3 = 0.48, log 5 = 0.69, log 7 = 0.84, log 11 = 1.04) (a) 3.2 (b) 42 (c) 5.2 (d) 6.2 Match List-I with List-II. List -I List-II (A) |Nog +3Hyg > 2NHx) |() | Cu (B) |CO@ + 3H) > CHyg | (II). | Cu/ZnO oe + FO]: 7 C1203 (C) COw® + Fa) => HCHO) (III) Fe,O Choose the correct answer from the options given below: (a) A - (II), B- (IV), C - (1), (D) - (IID) (b) A - (ID), B - (I), C - (IV), (D) - (II) (c) A - (III), B- (IV), C - (1), (D) - (11) (d) A - (III), B - (1), C - (IV), (D) - (11) The IUPAC nomenclature of an element with electronic configuration [Rn] 5f'* 6d! 7s” is (a) Unnilbium (b) Unnilunium (c) Unnilquadium (d) Unniltrium. The compound(s) that is(are) removed as slag during the extraction of copper is (A) CaO (B) FeO (C) ALO; (D) ZnO (E) NiO Choose the correct answer from the options given below: (a) (C); (D) only (c) (A), (B) only The reaction of H,O, with potassium permanganate in acidic medium leads to the formation of mainly (a) Mn?* (b) Mn** (c) Mn** (d) Mn°* Choose the correct order of density of the alkali metals. (a) Li<xK<Na<Rb<Cs (b) Li< Na<K<Rb<Cs (c) Cs<RbD<K<Na<Li (d) Li<Na<K<Cs<Rb (b) (A), (B), (E) only (d) (B) only CHEMISTRY TODAY | SEPTEMBER ‘22 @ 10. The geometry around boron in the product B O O formed from the following reaction is BF, + NaH 2% 4 + NaF (a) a_i, H A+NMe; —>B PA-BESO, (a) trigonal planar (b) tetrahedral (c) pyramidal (d) square planar. CN (i) DIBAL-H H 11. The interhalogen compound formed from the (b) IS (HO? OF reaction of bromine with excess of fluorine is a ; (a) hypohalite (b) halate CO2C2Hs (c) perhalate (d) halite. «) iG (AIG Bs 12. The photochemical smog does not generally contain , (a) NO (b) NO, (c) SO, (d) HCHO (a) OH (i) |) NaCriOr 13. A compound A on reaction with X and Y produces (ESO, 10” H,0 th j duct but different by-product «same mm] a pm ne ee enna ero ee | 16. An organic compound A on reaction with NH, and b, Oxidation of a, gives a substance produced by . . : followed by heating gives compound B, which ants. . : CH, CH; on further strong heating gives compound | | C(CgH;NO,). Compound C tial reacti x _ gHsNO,). pound C on sequential reaction O=C—CH,—C—CH. os ous at ey 3 with ethanolic KOH, alkyl chloride and hydrolysis H,C=C—CH,—C—CH; ny with alkali gives a primary amine. The compound dort Gis CH Ais Ganspoenda $b +0=C—CH,—C—CH, CHO ba (a) (b) 3 X and Y respectively are COOH (a) KMnO,/H* and dil. KMnO,, 273K COOH CHO (b) KMnO, (dilute), 273 K and KMnO,/H* (<) (d) OH (c) KMnO,/H* and 03, H,O/Zn GOGH (d) O3, H,O/Zn and KMnO,/H* 17. Melamine polymer is formed by the condensation of N 14. Most stable product of the following reaction is E_NS ae (a) 4 Ne + HCHO OH (i) HC < \- SO,Cl, Pyridine Nv 7 ? NH, (ii) NaCN, DMF aeae H) (b) + HCHO CN CN NX (a) (b) on oe = a “+b HCHO ON @) AY NN Oo 15. Which one of the following reactions does not (d) N + + HCHO represent correct combination of substrate and product under the given conditions? & CHEMISTRY TODAY | SEPTEMBER ‘22 18. 19. 20. During the denaturation of proteins, which of these structures will remain intact? (a) Primary (b) Secondary (c) Tertiary (d) Quaternary Drugs used to bind to receptors, inhibiting its natural function and blocking a message are called (a) agonists (b) antagonists (c) allosterists (d) antihistaminists. Given below are two statements : Statement I : On heating with KHSO,, glycerol is dehydrated and acrolein is formed. Statement II: Acrolein has fruity odour and can be used to test glycerol’s presence. Choose the correct option. (a) Both statement I and statement II are correct. (b) Both statement I and statement II are incorrect. (c) Statement I is correct but statement II is incorrect. (d) Statement I is incorrect but statement II is correct. SECTION-B (NUMERICAL TYPE QUESTIONS) 21. 22. 23. 24. 25. Attempt any 5 questions out of 10. Among the following species Na» Nz NzNz' 5 On, O7', 07, OF" the number of species showing diamagnetism is The enthalpy of combustion of propane, graphite and dihydrogen at 298 K are-2220.0kJ mol ',-393.5kJ mol * and -285.8 kJ mol respectively. The magnitude of enthalpy of formation of propane (C3Hg) is ____ kJ moll. (Nearest integer) The pressure of a moist gas at 27°C is 4 atm. The volume of the container is doubled at the same temperature. The new pressure of the moist gas is —__ x 107! atm. (Nearest integer) (Given : The vapour pressure of water at 27°C is 0.4 atm.) The cell potential for Zn|Zn** (qq)||Sn** [Sn is 0.801 V at 298 K. The reaction quotient for the above reaction is 10”. The number of electrons involved in the given electrochemical cell reaction is__. (Given: EF n2*/20 = -0.763 V, Egat isn = +0.008 V and 2.303RT/F = 0.06 V) The half life for the decomposition of gaseous compound A is 240 s when the gaseous pressure was 500 Torr initially. When the pressure was 250 Torr, the halflife was found to be 4.0 min. The order of the reaction is___. (Nearest integer) 26. 27. 28. 29. 30. Consider the following metal complexes : [Co(NHs).]** [CoCl(NH3)5]** [Co(CN),]*- [Co(NH3)5(H,O)]** The spin-only magnetic moment value of the complexthatabsorbslightwith shortest wavelength is ___B.M. (Nearest integer) Among Co**, Ti**, V7* and Cr** ions, one if used as a reagent cannot liberate H, from dilute mineral acid solution, its spin-only magnetic moment in gaseous stateis___B.M. (Nearest integer) While estimating the nitrogen present in an organic compound by Kjeldahl’s method, the ammonia evolved from 0.25 g of the compound neutralized 2.5 mL of 2 M H,SO,. The percentage of nitrogen present in organic compoundis__. The number of sp® hybridised carbons in an acyclic neutral compound with molecular formula C,H;N In the given reaction Hc | C— OEt OEt A Hao CH O (Where Et is — C,H) The number of chiral carbon/s in product A is ‘ SOLUTIONS : SO,Cl, + 2H,0 —> H,SO, + 2HCI x mole xmole 2x mole H,SO,4 + 2NaOH —> Na,SO4 + 2H,0 x mole 2x mole HCl + NaOH — NaCl + H,O 2x mole 2x mole Total number of moles of NaOH required = 4x = 16 => x=4, (i) (ii) (c): The value of n and / cannot be equal. For any value of n, possible values of | are 0 ton - 1. (c): In 1 litre of solution, 0.5 mL of HCOOH is present. Density = ass Volume Mass of solute = d x V = 1.05 gmL x 0.5 mL = 0.525 ¢ Let mass of solution = 1 kg = 1000 g CHEMISTRY TODAY | SEPTEMBER ‘22 ‘9