2017 JEE Chemistry Solved Paper

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2. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. • Multiple ChoiceQuestions • Δ U isequal to • Isochoric work Isobaric work Adiabatic work Isothermalwork • Answer • The radius of the second Bohr orbit for the hydrogen atom is: • (Plank's const. h = 6.6262 × 10–34 Js ; mass of electron = 9.1091 × 10–31 kg ; charge of electron e = 1.60210 × 10–19 C ; permittivity ofvacuum • ∈0 = 8.854185 × 10–12 kg–1 m–3 A2) 1.65Å • 4.76Å • 0.529Å • 2.12Å • Answer • pKa of a weak acid (HA) and pKb of a weak base (BOH) are 3.2 and 3.4, respectively. The pH of their salt (AB) solutionis • 7.2 • 6.9 • 7.0 • 1.0 • Answer • Themostabundantelementbymassinthebodyofahealthyhumanadultare: • Oxygen (61.4%) ; Carbon (22.9%), Hydrogen(10.0%) ; and Nitrogen (2.6%). The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atomsis • 15kg • 37.5Kg • 7.5 Kg 40Kg • Answer • In the following reactions, ZnO is respectively acting as a/an: • ZnO + Na2O →Na2ZnO2 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

3. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. (b) ZnO + CO2 →ZnCO3 base and acid base and base acid and acid acid andbase Answer Given C(grahite) + O2(g) →CO2(g) Δ -1 rH° = - 393.5 kJmol H2(g) + 1/2O2(g) → H2O(l) Δ -1 rH° = +890.3 kJmol Based on the above thermochemical equations, the value of ΔrH° at 298 K for the reaction C(grahite) + 2H2(g) →CH4 willbe +74.8 kJmol–1 +144.0 kJmol–1 –74.8 kJ mol–1 –144.0 kJ mol–1 Answer The group having isoelectronic speciesis O2– , F–, Na+ ,Mg2+ O– , F–, Na,Mg+ O2–, F–, Na ,Mg2+ O– , F–, Na+ ,Mg2+ Answer Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect is: Both form basic carbonates Both form soluble bicarbonates Both formnitrides Nitrates of both Li and Mg yield NO2 and O2 on heating Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

4. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. 9. Which of the following molecules is least resonancestabilized? Answer 10. A water sample has ppm level concentration of followinganions F-= 10; SO 2- =100; NO -=50 4 3 the anion/anions that make/makes the water sample unsuitable for drinking is/are: only NO- 3 both 2 SO - and NO- 4 3 only F– only SO2- 4 Answer 11. A metal crystallises in a face centred cubic structure. If the edge length of its unit cell is'a', the closest approach between two atoms in metallic crystal willbe 2a Answer 12.TworeactionsR1andR2haveidenticalpre-exponentialfactors.ActivationenergyofR1exceedsthatofR2 by10kJmol–1.IfkandkarerateconstantsforreactionsR andRrespectivelyat300K,thenln(k/k) is 1 2 1 2 21 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

5. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. • equalto- • (R = 8.314 Jmol–1K–1) • 8 • 12 • 6 • 4 • Answer • The Tyndall effect is observed only when following conditions aresatisfied:- • The diameter of the dispersed particles is much smaller than the wavelength of the lightused. • The diameter of the dispersed particle is not much smaller than the wavelength of the lightused. • The refractive indices of the dispersed phase and dispersion medium are almost similar inmagnitude. • The refractive indices of the dispersed phase and dispersion medium differ greatly inmagnitude. • and(d) • and(d) • and(c) • and (c) Answer • Which of the following reactions is an example of a redox reaction? XeF4 + O2F2 → XeF6 +O2 • XeF + PF → [XeF]+PF – 2 5 6 • XeF6 + H2O → XeOF4 + 2HF XeF6 + 2H2O → XeO2F2 +4HF • Answer • The products obtained when chlorine gas reacts with cold and dilute aqueous NaOHare • ClO– and ClO– • 3 • ClO - and ClO - 2 3 • Cl– and ClO– Cl– and ClO- • 2 • Answer • Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4. 'X' reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises acidic solution of KMnO4. 'X'is • C6H5COONa Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

6. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. HCOONa Na2C2O4 CH3COONa Answer Which of the following species is not paramagnetic NO CO O2 B2 Answer The freezing point of benzene decreases by 0.45°C when 0.2 g of acetic acid is added to 20 g of benzene. If acetic acid associates to form a dimer in benzene, percentage association of acetic acid in benzene will be (K –1 f for benzene = 5.12 K kg mol ) 64.6% 80.4% 74.6% 94.6% Answer On treatment of 100 mL of 0.1 M solution of CoCl . 6H O with excess AgNO ; 1.2 × 1022 ionsare 3 2 3 precipitated. The complex is [Co(H2O)4Cl2]Cl.2H2O [Co(H2O)3Cl3].3H2O [Co(H2O)6]Cl3 [Co(H2O)5Cl]Cl2.H2O Answer 1 gram of a carbonate (M2CO3) on treatment with excess HCl produces 0.01186 mole of CO2. Themolar mass of M CO in g mol-1is 2 3 1186 84.3 118.6 11.86 Answer Given, Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

7. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Among the following, the strongest reducing agentis Cr Mn2+ Cr3+ Cl- Answer 22. Which of the following compounds will the significant amount of meta product during mono-nitration reaction? Answer 23. The increasing order of the reactivity of the following halides for the SN1 reactionis Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

8. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. (III) < (II) <(I) (II) < (I) <(III) < (III) <(II) < (III) < (I) Answer The formation of which of the following polymers involves hydrolysis reaction? Nylon6 Bakelite Nylon 6, 6 Terylene Answer Which of the following, upon treatment with tert-BuONa followed by addition of bromine water, fails to decolourize the colour ofbromine? Answer 26. 3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product.The number of possible stereoisomers for the productis Six Two Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

9. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Zero Four Answer 27. The correct sequence of reagents for the following conversion willbe + – + [Ag(NH3)2] OH , H /CH3OH, CH3MgBr CH + – 3MgBr, H /CH3OH, [Ag(NH3)2]+OH CH + – + 3MgBr, [Ag(NH3)2] OH , H /CH3OH [Ag(NH )]+ OH–, CH MgBr, H+/CHOH 3 2 3 3 Answer 28. Which of the following compounds will behave as a reducing sugar in an aqueousKOH solution? Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

10. Chemistry JEE2017 Exam Year 2017 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. 29. The major product obtained in the following reactionis t C6H5CH (O Bu)CH2C6H5 C6H5CH=CHC6H5 (+)C H CH(OtBu)CHH 6 5 25 (–)C H CH(OtBu)CH CH 6 5 2 65 Answer 30. The major product obtained in the following reactionis Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com