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2018 JEE Chemistry Solved paper

Download JEE Mains 2018 Solve Chemistry paper and get Prepare for your Exam. Check Previous Year Paper for all JEE Mains Subject such as Chemistry, Physics, Maths free.<br>https://www.zigya.com/previous-year-papers/jee/12/Chemistry

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2018 JEE Chemistry Solved paper

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  1. www.zigya.com Previous YearPaper Chemistry - 2018

  2. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Multiple ChoiceQuestions 1. An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination? Answer 2. The predominant form of histamine present in human blood is (pKa, Histidine =6.0) Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  3. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer 3. Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermicreaction? A andD A and B B and C C andD Answer 4. The combustion of benzene (l) gives CO2(g) and H2O(l).Given that heat of combustion of benzene at constant volume is –3263.9 kJ mol–1 at 250C; the heat of combustion (in kJ mol–1) of benzene at constant pressure will be (R = 8.314 JK–1mol–1) –3267.6 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  4. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. 4152.6 –452.46 3260 Answer The ratio of mass percent of C and H of an organic compound (CXHYOZ) is 6: 1. If one molecule of the above compound (CXHYOZ) contains half as much oxygen as required to burn one molecule of compound CXHY completely to CO2 and H2O. The empirical formula of compound CXHYOZis C2H4O3 C3H6O3 C2H4O C3H4O2 Answer Which of the following are Lewis acids? BCl3 andAlCl3 PH3 and BCl3 AlCl3 and SiCl4 PH3 andSiCl4 Answer According to molecular orbital theory, which of the following will not be a viable molecule? H22- He22+ He2+ H2- Answer Which of the following compounds contain(s) no covalent bond(s)? KCl, PH3, O2, B2H6,H2SO4 KCl,B2H6 KCl, B2H6, PH3 KCl,H2SO4 KCl Answer Total number of lone pair of electrons in I - ionis 3 12 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  5. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. 3 6 9 Answer Hydrogen peroxide oxidises Fe(CN)6]4- to [Fe(CN)6]3- in acidic medium but reduces [Fe(CN)6]3- to [Fe(CN)6]4- in alkaline medium. The other products formed are,respectively H - 2O and (H2O + OH) (H2O + O2) andH2O (H O + O ) and (H O +OH-) 2 2 2 H2O and (H2O +O2) Answer When metal ‘M’ is treated with NaOH, a white gelatinous precipitate ‘X’ is obtained, which is soluble in excess of NaOH. Compound ‘X’ when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal ‘M’is Fe Zn Ca Al Answer The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3 (PO4)2.Ca(OH)2]to [3{Ca(OH)2}. CaF2] [CaF2] [3(CaF2). Ca(OH)2] [3Ca3(PO4)2.CaF2] Answer For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point? [Co(H2O)3Cl3].3H2O [Co(H2O)6]Cl3 [Co(H2O)5Cl] Cl2.H2O [Co(H2O)4Cl2]Cl.2H2O Answer How long (approximate) should water be electrolysed by passing through 100 amperes current so thatthe Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  6. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. • oxygen released can completely burn 27.66 g of diborane? (Atomic weight of B = 10.8u) • 1.6hours • 6.4hours • 0.8hours • 3.2hours Answer • Consider the following reaction and statements: [Co(NH3)4Br2]+ + Br- → [Co(NH3)3Br3] +NH3 • Two isomers are produced if the reactant complex ion is acis-isomer • Two isomers are produced if the reactant complex ion is a trans-isomer • Only one isomer is produced if the reactant complex ion isa trans-isomer • Only one isomer is produced if the reactant complex ion is a cis – isomer The correct statementsare • (II) and(IV) • (I) and(II) • (I) and(III) • (III) and (IV) Answer • An aqueous solution contains an unknown concentration of Ba2+. When 50 mL of a 1 Msolution of Na SO is • 24 • added,BaSO4justbeginstoprecipitate.Thefinalvolumeis500mL.ThesolubilityproductofBaSO4is1x • 10–10. What is the original concentration ofBa2+? • 1.0 x 10–10M • 5 x 10–9M • 2x10–9M • 1.1 x10–9M • Answer • At518Ctherateofdecompositionofasampleofgaseousacetaldehydeinitiallyatapressureof363Torr, • was1.00Torrs–1when5%hadreactedand0.5Torrs–1when33%hadreacted.Theorderofthereactionis • 2 • 3 • 1 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  7. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer The trans-alkenes are formed by the reduction of alkynes with Sn -HCl H2 – Pd/C, BaSO4 NaBH4 Na/liq.NH3 Answer Which type of ‘defect’ has the presence of cations in the interstitial sites? Metal deficiency defect Schottky defect Vacancy defect Frenkeldefect Answer An aqueous solution contains 0.10 M H2S and 0.20 M HCl. If the equilibrium constants for the formation of HS–fromH –7 2- – –13 2- 2S is 1.0 x10 and that of S from HS ions is 1.2x10 then the concentration of S ionsin aqueous solutionis 5 x10-19 5 x10-8 3 x10–20 6 x10-21 Answer The oxidation states of Cr in [Cr(H2O)6]Cl3,[Cr(C6H6)2], and K2[Cr(CN)2 (O)2(O2)(NH3)] respectively are: +3, +2, and+4 +3, 0, and+6 +3, 0, and+4 +3, +4, and+6 Answer Which of the following compounds will be suitable for Kjeldah1’s method for nitrogenestimation? Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  8. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer Glucose on prolonged heating with HI gives 6-iodohexanal n-Hexane 1-Hexene Hexanoic acid Answer The increasing order of basicity of the following compoundsis: (d) < (b) < (a) <(c) (a) < (b) < (c) <(d) (b) < (a) < (c) <(d) (b) < (a) < (d) <(c) Answer 25. Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reactswith Br2 to Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  9. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. form product B. A and B arerespectively: Answer 26. The major product formed in the following reactionis: Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  10. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer 27. Phenol on treatment with CO2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH3CO)2O in the presence of catalytic amount ofH2SO4 produces: Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  11. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer 28. The major product of the following reactionis, Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

  12. Chemistry JEE2018 Exam Year 2018 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer The compound that does not produce nitrogen gas by the thermal decomposition is (NH4)2SO4 Ba(N3)2 (NH4)2Cr2O7 NH4NO2 Answer Which of the following salts is the most basic in aqueous solution? Pb(CH3COO)2 Al(CN)3 CH3COOK FeCl3 Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

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