2016 JEE Chemistry Solved paper

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2. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Multiple ChoiceQuestions 1. A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of h/λ (where λ is wavelength associated with electron wave) is given by: 2meV mev Answer The heats of combustion of carbon and carbon monoxide are −393.5 and −283.5 kJ mol−1, respectively. The heat of formation (in kJ) of carbon monoxide per moleis: 676.5 -676.5 -110.5 110s Answer The species in which the N atom is in a state of sp hybridizationis: NO- 2 NO- 3 NO2 NO + 2 Answer The equilibrium constant at 298 K for a reaction A+B ⇌ C+D is 100. If the initial concentration of allthe four species were 1 M each, then equilibrium concentration of D (in mol L−1 ) will be: 0.818 1.818 1.182 0.182 Answer Which of the following atoms has the highest first ionisation energy? Na K Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

3. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Sc Rb Answer 6.Twoclosedbulbsofequalvolume(V)containinganidealgasinitiallyatpressurepiandtemperatureT1are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulbs is then raised to T2. The final pressure pfis: Answer 7. The hottest region of Bunsen flame shown in the figure belowis: region2 region3 region4 region1 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

4. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer The distillation technique most suited for separating glycerol from spent-lye in the soap industry is: fractionaldistillation steamdistillation distillation under reduced pressure simpledistillation Answer At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbonis: C3H8 C4H8 C4H12 C3H6 Answer Which one of the following statements about water is false? Water can act both as an acid and as abase. There is extensive intramolecular hydrogen bonding in the condensed phase. Iceformedbyheavywatersinksinnormalwater. Water is oxidized to oxygen duringphotosynthesis. Answer The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to the high concentrationof: Lead Nitrate Iron Fluoride Answer The main oxides formed on combustion of Li, Na and K in excess of air are, respectively: LiO2, Na2O2 andK2O LiO2, Na2O2 and KO2 LiO, Na2O2 andKO2 Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

5. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. LiO, Na2O andKO2 Answer Which of the following compounds is metallic and ferromagnetic? VO2 MnO2 TiO2 CrO2 Answer For a linear plot of log (x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct? (k and n areconstants) 1/n appears as the intercept. Only 1/n appears as theslope. log (1/n) appears as theintercept. Both k and 1/n appear in the slope term Answer 18 g glucose (C6H12O6 ) is added to 178.2 g water. The vapor pressure of water (in torr) for this aqueous solutionis: 76.0 752.4 759.0 7.6 Answer Decomposition of H2O2 follows a first order reaction. In fifty minutes the concentration of H2O2 decreases from 0.5 to 0.125 M in one such decomposition. When the concentration of H2O2 reaches 0.05 M, the rate of formation of O2 willbe: 6.93×10−4 molmin−1 2.66 L min−1 at STP 1.34×10−2 mol min−1 6.93×10−2 molmin−1 Answer 17. The pair having the same magnetic momentis: [At. No. : Cr=24, Mn=25, Fe=26,Co=27] Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

6. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. 2+ 2+ [Cr(H2O)6 ] and [Fe(H2O)6] [Mn(H O) ]2+ and [Cr(H O) ]2+ 2 6 2 6 [CoCl ]2− and [Fe(H O) ]2+ 4 2 6 [Cr(H O) ]2+ and [CoCl ]2− 2 6 4 Answer Which one of the following ores is best concentrated by froth flotation method? Siderite Galena Malachite Magnetite Answer The pair in which phosphorous atoms have a formal oxidation state of +3 is: Pyrophosphorous and hypophosphoricacids Orthophosphorous and hypophosphoric acids Pyrophosphorous and pyrophosphoric acids Orthophosphorous and pyrophosphorousacids Answer Which one of the following complexes shows optical isomerism? cis[Co(en)2Cl2]Cl trans[Co(en)2Cl2]Cl [Co(NH3)4Cl2 ]Cl [Co(NH3)3Cl3] Answer The reaction of zinc with dilute and concentrated nitric acid, respectively, produces: NO2 andNO NO and N2O NO2 and N2O N2O andNO2 Answer Galvanization is applying a coating of: Cr Cu Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

7. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Zn Pb Answer 23. 2-chloro-2-methylpentane on reaction with sodium methoxide in methanolyields: Both a andc Onlyc Both a and b All ofthese Answer Which of the following statements about low-density polythene is false? It is a poor conductor ofelectricity Its synthesis requires dioxygen or a peroxide initiator as a catalyst. It is used in the manufacture of buckets, dustbinsetc. Its synthesis requires highpressure. Answer Which of the following is an anionic detergent? Sodium laurylsulphate Cetyltrimethyl ammonium bromide Glyceryloleate Sodium stearate Answer The absolute configurationof Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

8. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. is: (2S,3R) (2S,3S) (2R,3R) (2R,3S) Answer Thiol group is present in: Cystine Cysteine Methionine Cytosine Answer In the Hofmann bromamide degradation reaction, the number of moles of NaOH and Br2 used per mole of amine producedare: Four moles of NaOH and two moles ofBr2 Two moles of NaOH and two moles of Br2 Four moles of NaOH and one mole of Br2 One mole of NaOH and one moleof Br2 Answer The reaction of propene with HOCl(Cl2+H2O) proceeds through theintermediate: CH −CH+−CH−Cl 3 2 CH −CH(OH)−C+H 3 2 CH−CHCl−C+H 3 2 CH −C+H−CH−OH 3 2 Answer The product of the reaction given below is: Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com

9. Chemistry JEE2016 Exam Year 2016 Study, Assignments, Solved Previous Year Papers .Questions and Answers. Free Forever. Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Joinwww.zigya.com