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CBSE Class 12 Board Exam 2019 : Chemistry (Series 4)

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SET-1 H$moS> Z . Series BVM/4 Code No. amob Z . 56/4/1 narjmWu H$moS >H$mo C ma-nwp VH$m Ho$ _wI-n >na Ad ` {bIo & Roll No. Candidates must write the Code on the title page of the answer-book. H $n`m Om M H$a b| {H$ Bg Z-n _o _w{ V n > 15 h & Z-n _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Z ~a H$mo N>m C ma-nwp VH$m Ho$ _wI-n > na {bI| & H $n`m Om M H$a b| {H$ Bg Z-n _| >27 Z h & H $n`m Z H$m C ma {bIZm ew $ H$aZo go nhbo, Z H$m H $_m H$ Ad ` {bI| & Bg Z-n H$mo n T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h & Z-n H$m {dVaU nydm _| 10.15 ~Oo {H$`m OmEJm & 10.15 ~Oo go 10.30 ~Oo VH$ N>m Ho$db Z-n H$mo n T>|Jo Am a Bg Ad{Y Ho$ Xm amZ do C ma-nwp VH$m na H$moB C ma Zht {bI|Jo & Please check that this question paper contains 15 printed pages. Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate. Please check that this question paper contains 27 questions. Please write down the Serial Number of the question before attempting it. 15 minute time has been allotted to read this question paper. The question paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the question paper only and will not write any answer on the answer-book during this period. agm`Z {dkmZ (g mp VH$) CHEMISTRY (Theory) {ZYm [aV g_` : 3 K Q>o A{YH$V_ A H$ : 70 Time allowed : 3 hours 56/4/1 Maximum Marks : 70 1 P.T.O. gm_m ` {ZX}e : (i) g^r Z A{Zdm` h & (ii) I S> A : Z g `m 1 go 5 VH$ A{V bKw-C mar` Z h Am a `oH$ Z Ho$ {bE 1 A H$ h & (iii) I S> ~ : Z g `m 6 go 12 VH$ bKw-C mar` Z h Am a `oH$ Z Ho$ {bE 2 A H$ h & (iv) I S> g : Z g `m 13 go 24 VH$ ^r bKw-C mar` Z h Am a `oH$ Z Ho$ {bE 3 A H$ h & (v) I S> X : Z g `m 25 go 27 VH$ XrK -C mar` Z h Am a `oH$ Z Ho$ {bE 5 A H$ h & (vi) Z n _| g_J {dH$ n Zht {X`m J`m h & {\$a ^r EH$ A H$ dmbo Xmo Zm| _|, Xmo A H$m| dmbo Xmo Zmo _|, VrZ A H$m| dmbo Mma Zm| _| VWm nm M A H$m| dmbo VrZm| Zm| _| {dH$ n {X`m J`m h & Eogo g^r Zm| _| go AmnH$mo EH$ hr {dH$ n H$m C ma XoZm h & (vii) `{X Amd `H$Vm hmo, Vmo Amn bKwJUH$s` gma{U`m _m J gH$Vo h & H $ Hw$boQ>am| Ho$ `moJ H$s AZw_{V Zht h & General Instructions : (i) All questions are compulsory. (ii) Section A : Questions number 1 to 5 are very short answer questions and carry 1 mark each. (iii) Section B : Questions number 6 to 12 are short answer questions and carry 2 marks each. (iv) Section C : Questions number 13 to 24 are also short answer questions and carry 3 marks each. (v) Section D : Questions number 25 to 27 are long answer questions and carry 5 marks each. (vi) There is no overall choice. However, an internal choice has been provided in two questions of one mark, two questions of two marks, four questions of three marks and all the three questions of five marks weightage. You have to attempt only one of the choices in such questions. (vii) Use of log tables, if necessary. Use of calculators is not allowed. I S> A SECTION A 1. 1 {Z Z{b{IV {H $ Q>b _| Xmof {b{IE : X+ Y X+ Y Y Y X+ X+ X+ Y Y X+ Y X+ 56/4/1 2 Name the defect in the following crystal : X+ Y X+ Y Y Y X+ X+ X+ Y Y X+ Y X+ 2. O~ Cnghg `moOZ `m {JH$ CrCl3 . 6H2O _| AgNO3 {_bm`m J`m Vmo {V EH$ _mob `m {JH$ Ho$ {bE Xmo _mob AgCl Ho$ Adjo{nV h E & Cnghg `moOZ `m {JH$ H$m g aMZm _H$ gy `m h ? AWdm g Hw$b Am a { bdU _| `m A Va h ? 1 1 When a coordination compound CrCl3 . 6H2O is mixed with AgNO3, two moles of AgCl are precipitated per mole of the compound. What is the structural formula of the coordination compound ? OR What is the difference between a complex and a double salt ? 3. 1 EH$ CXmhaU g{hV ghMmar H$mobm BS> H$mo n[a^m{fV H$s{OE & Define associated colloid with an example. 4. n- `y{Q>b ~ mo_mBS> H$s VwbZm _| A{^{H $`merb `m| h ? t- `y{Q>b ~ mo_mBS> SN1 A{^{H $`m Ho$ {V A{YH$ 1 Why is t-butyl bromide more reactive towards SN1 reaction as compared to n-butyl bromide ? 5. hm \$_mZ ~ mo_m_mBS> {Z ZrH$aU A{^{H $`m go g ~ A{^{H $`m {b{IE & AWdm monoZo_rZ Am a N,N-S>mB_o{Wb_oWoZo_rZ _| H$m~ Z na_mUwAm| H$s g `m g_mZ hmoVo h E ^r N,N-S>mB_o{Wb_oWoZo_rZ H$s VwbZm _| monoZo_rZ H$m dWZm H$ C Va hmoVm h & `m| ? 1 1 Write the reaction involved in the Hoffmann bromamide degradation reaction. OR Propanamine and N,N-dimethylmethanamine contain the same number of carbon atoms, even though Propanamine has higher boiling point than N,N-dimethylmethanamine. Why ? 56/4/1 3 P.T.O. I S> ~ SECTION B 6. {Z Z{b{IV Ho$ {bE H$maU Xr{OE : (a) Obr` nrer O H$mo U Ob H$s VwbZm _| R> S>o Ob _| A{YH$ Amam_ go ahVr h & (b) A{YH$ D $MmB na ahZo dmbo bmoJ EoZm p g`m go nr{ S>V hmo OmVo h , \$b d $n do n Q>V`m gmoM Zht nmVo h & AWdm EogrQ>moZ Ed bmoamo\$m _ {db`Z go {H$g H$ma H$m p Wa dmWr {_lU ~ZoJm ? {db`Z _| {dH${gV A VamAUwH$ ~bm| Ho$ gm_ ` Ho$ AmYma na nwp Q> H$s{OE & 2 2 Give reasons for the following : (a) Aquatic species are more comfortable in cold water than warm water. (b) At higher altitudes people suffer from anoxia resulting in inability to think. OR What type of azeotropic mixture will be formed by a solution of acetone and chloroform ? Justify on the basis of strength of intermolecular interactions that develop in the solution. 7. ~b {d wV -AnKQ> m| Ho$ VZwH$aU Ho$ gmW _moba MmbH$Vm _| {dMaU H$s `m `m AmboI XoVo h E H$s{OE & 2 Explain with a graph, the variation of molar conductivity of a strong electrolyte with dilution. 8. O~ {H$gr ZmBQ >oQ> Am`Z `w $ Obr` {db`Z _| VZw \o$ag g \o$Q> {db`Z {_bmZo Ho$ n MmV gmdYmZrnyd H$ naIZbr H$s Xrdma Ho$ ghmao gm g `y[aH$ A b {_bm`m OmVm h , Vmo {db`Z VWm g `y[aH$ A b A Vamn R> na EH$ ^yar db` ~Z OmVr h & ^yar db` H$m ~ZZm {H$g G$Um`Z H$s Cnp W{V gw{Zp MV H$aVm h & ^yar db` H$m g KQ>Z `m h ? AWdm Amn HCl go Cl2 H$m {daMZ Am a Cl2 go HCl H$m {daMZ H $go H$a gH$Vo h ? Ho$db A{^{H $`mE {b{IE & When dilute ferrous sulphate solution is added to an aqueous solution containing nitrate ion followed by careful addition of concentrated sulphuric acid along the sides of test tube, a brown ring is formed at the interface between the solution and sulphuric acid layers. Which anion is confirmed by the appearance of brown ring ? What is the composition of the brown ring ? OR How can you prepare Cl2 from HCl and HCl from Cl2 ? Write reactions only. 56/4/1 4 2 2 9. Am H$ S>m| H$m Cn`moJ H$aHo$ {Z Z{b{IV Ho$ C ma Xr{OE Am a H$maU XoVo h E nwp Q> ^r H$s{OE : 1 2=2 Cr Mn Fe Co Eo 2 M /M 0 91 1 18 0 44 0 28 Eo 3 M / M2 0 41 + 1 57 + 0 77 + 1 97 (a) (b) Obr` _m `_ _| H$m Z ~bVa AnMm`H$ h , Cr2+ AWdm Fe2+ Am a `m| ? +2 Am grH$aU Ad Wm _| H$m Z-gm g~go A{YH$ Wm`r Am`Z h Am a `m| ? Use the data to answer the following and also justify giving reason : 10. Cr Mn Fe Co Eo 2 M /M 0 91 1 18 0 44 0 28 Eo 3 M / M2 0 41 + 1 57 + 0 77 + 1 97 (a) Which is a stronger reducing agent in aqueous medium, Cr2+ or Fe2+ and why ? (b) Which is the most stable ion in +2 oxidation and why ? 1 2=2 g_rH$aU g{hV n[a^m{fV H$s{OE : (a) amB_a-Q>r_Z A{^{H $`m (b) {d{b`_gZ g bofU Define with equation : 11. (a) Riemer-Tiemann Reaction (b) Williamson s Synthesis {Z Z{b{IV ~h bH$m| Ho$ EH$bH$m| H$s g aMZmE Xr{OE : (a) ZmBbm Z-6,6 (b) `yZm-S 1 2=2 Give the structures of monomers of the following polymers : (a) Nylon-6,6 (b) Buna-S 56/4/1 5 P.T.O. 12. H$maU XoVo h E {Z Z{b{IV H$mo `moJO Ed g KZZ ~h bH$m| _| dJuH $V H$s{OE : (a) Q>o bm Z (b) PHBV 1 2=2 Classify the following as addition and condensation polymers giving reason : (a) Teflon (b) PHBV I S> g SECTION C 13. H $mo{_`_ bcc g aMZm _| {H $ Q>brH $V hmoVm h & `{X BgHo$ H$moa H$s b ~mB 300 pm h , Vmo BgH$m KZ d n[aH${bV H$s{OE & H $mo{_`_ H$m na_mp dH$ `_mZ 52 u h & [NA = 6.022 1023 mol 1] Chromium crystallises in bcc structure. If its edge length is 300 pm, find its density. Atomic mass of chromium is 52 u. [NA = 6.022 1023 mol 1] 14. na 30 g {V brQ>a gm Vm dmbo byH$mog Ho$ {db`Z H$m namgaU Xm~ 4 98 bar h & `{X Bgr Vmn na byH$mog {db`Z H$m namgaU Xm~ 1 52 bar h , Vmo CgH$s gm Vm `m hmoJr ? 300 K At 300 K, 30 g of glucose present in a litre of its solution has an osmotic pressure of 4 98 bar. If the osmotic pressure of a glucose solution is 1 52 bar at the same temperature, what would be its concentration ? 15. 3 {Z Z{b{IV A{^{H $`m H$m {X`m h : rG Am a log Kc n[aH${bV H$s{OE : 3 3 Cd+2(aq) + Zn(s) Zn2+(aq) + Cd(s) Eo 2 = 0 403 V E Cd o / Cd Zn 2 / Zn = 0 763 V AWdm CrO3 dmbo A br` {db`Z go H $mo{_`_ YmVw H$m {Z Z{b{IV g_rH$aU Ho$ AZwgma {d wV -bonZ {H$`m OmVm h : CrO3(aq) + 6H+ + 6e Cr(s) + 3H2O n[aH${bV H$s{OE {H$ 24,000 Hy$bm _ go H $mo{_`_ Ho$ {H$VZo J m_ {d wV -bo{nV hmo|Jo VWm 12 5 A H$s {d wV Ymam `w $ H$aZo na 1 5 g H $mo{_`_ {d wV -bo{nV H$aZo _| {H$VZm g_` bJoJm ? [Cr H$m na_mUw ^ma = 52 g mol 1, 1 F = 96500 C mol 1] 56/4/1 6 3 Calculate rG and log Kc for the following reaction : Cd+2(aq) + Zn(s) Zn2+(aq) + Cd(s) Given : = 0 403 V Eo 2 Cd / Cd = 0 763 V Eo 2 Zn / Zn OR Chromium metal is electroplated using an acidic solution containing CrO3 according to the following equation : CrO3(aq) + 6H+ + 6e Cr(s) + 3H2O Calculate how many grams of chromium will be electroplated by 24,000 coulombs. How long will it take to electroplate 1 5 g chromium using 12 5 A current ? [Atomic mass of Cr = 52 g mol 1, 1 F = 96500 C mol 1] 16. {Z Z{b{IV Ho$ {bE H$maU Xr{OE : 1 3=3 (a) M_ emoYZ Ho$ n MmV M_ H$R>moa hmo OmVm h & (b) eara Ho$ {H$gr ^mJ Ho$ H$Q> OmZo na a $ md H$s Ad Wm _| KCl H$s Anojm FeCl3 H$mo dar`Vm Xr OmVr h & (c) {H$gr R>mog na J g Ho$ A{YemofU Ho$ {bE C Xm~ na \ $m ` S>{bH$ g_Vmnr Xm~ go dV hmo OmVr h & Give reasons for the following : (a) Leather gets hardened after tanning. (b) FeCl3 is preferred over KCl in case of a cut leading to bleeding. (c) 17. Freundlich isotherm becomes independent of pressure at high pressure for a gas absorbed on a solid. {Z Z{b{IV H$s `m ^y{_H$m h : 1 3=3 (a) \o$Z bdZ {d{Y _| AdZ_H$ H$s (b) _m S> H $_ _| H$m~ Z _moZm gmBS> H$s (c) ~m gmBQ>> go Eobw{_Zm Ho$ {ZjmbZ _| gm gmo{S>`_ hmBS >m gmBS> H$s AWdm ~m gmBQ> A` H$ go Eobw{_{Z`_ Ho$ {Z H$f U _ o hmoZo dmbr amgm`{ZH$ A{^{H $`mE {b{IE & 3 56/4/1 7 P.T.O. What is the role of (a) Depressants in froth floatation ? (b) Carbon monoxide in Mond s process ? (c) Concentrated sodium hydroxide in leaching of alumina from bauxite ? OR Write chemical reactions taking place in the extraction of Aluminium from Bauxite ore. 18. H $mo_mBQ> A` H$ go gmo{S>`_ S>mBH $mo_oQ> H$s {daMZ {d{Y H$s `m `m H$s{OE & S>mBH $mo_oQ Am`Z mam \o$ag bdUm| Ho$ Am grH$aU H$mo {Z ${nV H$aZo Ho$ {bE g_rH$aU Xr{OE & 1 3=3 AWdm {Z Z{b{IV A{^{H $`mAm| H$mo nyU H$s{OE : 1 3=3 (a) MnO2 + KOH + O2 (b) I + MnO 4 + H+ (c) Cr2O7 2 + Sn2+ + H+ Explain the method of preparation of sodium dichromate from chromite ore. Give the equation representing oxidation of ferrous salts by dichromate ion. OR Complete the following reactions : 19. (a) MnO2 + KOH + O2 (b) I + MnO 4 + H+ (c) Cr2O7 2 + Sn2+ + H+ {Z Z{b{IV g Hw$bm| H$s g H$aU Ad Wm Am a Mw ~H$s` JwU {b{IE (i) [Fe(H2O)6]2+ (ii) [Ni(CN)4]2 : [na_mUw H $_m H$ : Fe = 26, Ni = 28] Write the hybridization and magnetic character of the following complexes : (i) [Fe(H2O)6]2+ (ii) [Ni(CN)4]2 [Atomic number : Fe = 26, Ni = 28] 56/4/1 8 3 20. {Z Z{b{IV Ho$ {bE H$maU Xr{OE : 1 3=3 (a) Am Wm o AWdm n am p W{V na NO2 g_yh H$s Cnp W{V h bmoEoarZm| H$s Zm{^H$amJr {V WmnZ A{^{H $`mAm| Ho$ {V {H $`merbVm ~ T>m XoVr h & (b) Am Wm o AWdm _oQ>m g_md`d H$s VwbZm _| p-S>mB bmoamo~o OrZ H$m JbZm H$ C Va hmoVm h & (c) Eo H$mohm bm| go Ep H$b bmoamBS> {daMZ Ho$ {bE Wm`mo{Zb bmoamBS> {d{Y H$mo dar`Vm Xr OmVr h & AWdm (a) 1- bmoamo `yQ>oZ go 1-Am`moS>mo `yQ>oZ Ho$ {daMZ H$m g_rH$aU {b{IE & (b) 2-~ mo_mono Q>oZ, 2-~ mo_mo-2-_o{Wb `yQ>oZ Am a 1-~ mo_mono Q>oZ _| go H$m Z-gm `m {JH$ {dbmonZ A{^{H $`m Ho$ {V A{YH$ {H $`merb h Am a `m| ? (c) IUPAC Zm_ {b{IE : 1 3=3 Give reasons for the following : (a) (b) (c) (a) (b) (c) 56/4/1 The presence of NO2 group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution reactions. p-dicholorobenzene has higher melting point than that of ortho or meta isomer. Thionyl chloride method is preferred for preparing alkyl chloride from alcohols. OR Write equation for preparation of 1-iodobutane from 1-chlorobutane. Out of 2-bromopentane, 2-bromo-2-methylbutane and 1-bromopentane, which compound is most reactive towards elimination reaction and why ? Give IUPAC name of 9 P.T.O. 21. (a) g_w{MV Eo H$sZ go Amn {Z Z{b{IV Eo H$mohm b H $go g bo{fV H$a oJo : (b) {Z Z{b{IV A{^{H $`m H$s H$m` {d{Y {b{IE : 1+2=3 H CH3CH2OH CH2 = CH2 + H2O 443 K (a) How will you synthesise the following alcohol from appropriate alkene : (b) Write the mechanism of the following reaction : H CH3CH2OH CH2 = CH2 + H2O 443 K 22. (a) {Z Z{b{IV `m {JH$ `wJbm| _| {d^oX Ho$ {bE EH$-EH$ amgm`{ZH$ narjU Xr{OE : (i) CH3NH2 Am a (CH3)2NH (ii) Eo{ZbrZ Am a EWoZo_rZ (b) Eo{ZbrZ \ $sS>ob-H $m Q> g A{^{H $`m `m| Zht XoVr h (a) Give one chemical test to distinguish between the compounds of the following pairs : (b) 56/4/1 (i) CH3NH2 and (CH3)2NH (ii) Aniline and Ethanamine ? Why aniline does not undergo Friedel-Crafts reaction ? 10 3 23. (a) (b) (c) (a) (b) (c) 24. byH$mog H$m H$moB EH$ JwUY_ Xr{OE Omo CgH$s {dd V m Ibm g aMZm mam Zht g_Pm`m Om gH$Vm h & Eo{_bog Am a Eo{_bmonop Q>Z H$s g KQ>Zm _H$ g aMZm Ho$ nXm| _| VwbZm H$s{OE & Eo_rZmo A b C^`Y_u H ${V `m| Xem Vo h ? 1 3=3 Give any one property of glucose that cannot be explained by the open chain structure. Compare amylase with amylopectin in terms of constituting structure. Why do amino acids show amphoteric behaviour ? 1 3=3 {Z Z{b{IV H$mo C{MV CXmhaU g{hV n[a^m{fV H$s{OE : (a) ny{VamoYr (Ep Q>gop Q>H$) (b) A dmnH$ (Zm Z-ZmaH$mo{Q>H$) nr S>mhmar (c) YZm`Zr An_mO H$ Define the following with suitable example of each : (a) Antiseptics (b) Non-narcotic analgesics (c) Cationic detergents I S> X SECTION D 25. (a) 56/4/1 A{^{H $`m R P na {dMma H$s{OE {Og_| R H$s gm Vm _| g_` Ho$ gmW n[adV Z {Z Z{b{IV AmboI mam Xem `m J`m h : (i) A{^{H $`m H$s H$mo{Q> H$s mJw{ $ H$s{OE & (ii) dH $ H$s T>mb ( dUVm) `m B {JV H$aVr h 11 ? P.T.O. (b) Vmn _| 293 K go 313 K VH$ d { H$aZo na {H$gr A{^{H $`m H$m doJ Mma JwZm hmo OmVm h & Ea H$s JUZm `h _mZVo h E H$s{OE {H$ BgH$m _mZ Vmn Ho$ gmW n[ad{V V Zht hmoVm h & 1+2+2=5 [R = 8 314 JK 1 mol 1] (a) (b) (a) AWdm {H$gr amgm`{ZH$ A{^{H $`m Ho$ {bE ln k Am a 1/T Ho$ ~rM EH$ J m\$ It{ME & A V:I S> `m {Z ${nV H$aVm h ? T>mb Ed Ea Ho$ _ ` g ~ Y `m h ? EH$ W_ H$mo{Q> H$s A{^{H $`m _| 20% {d`moOZ hmoZo _| H$s JUZm H$s{OE & [log 2 = 0 3010] {_ZQ> bJVo h & t1/2 2+3=5 Consider the reaction R P for which the change in concentration of R with time is shown by the following graph : (i) (ii) (b) 30 Predict the order of reaction. What does the slope of the curve indicate ? The rate of reaction quadruples when temperature changes from 293 K to 313 K. Calculate Ea assuming that it does not change with time. [R = 8 314 JK 1 mol 1] OR (a) Draw the plot of ln k vs 1/T for a chemical reaction. What does the intercept represent ? What is the relation between slope and Ea ? (b) A first order reaction takes 30 minutes for 20% decomposition. Calculate t . [log 2 = 0.3010] 1/2 56/4/1 12 26. (a) (b) (a) (b) (a) {Z Z{b{IV H$s g aMZm It{ME : (i) HClO3 (ii) H2S2O8 {Z Z{b{IV Ho$ {bE H$maU Xr{OE : (i) g \$a 1000 K Ho$ D$na AZwMw ~H$ d Xem Vm h & (ii) ` {n bwAmoarZ H$s Bbo Q >m Z bp Y E W nr bmoarZ H$s VwbZm _| H$_ G$Um _H$ h , bo{H$Z bwAmoarZ, bmoarZ H$s Anojm ~b Am grH$maH$ h & (iii) R>mog Ad Wm _| PCl5 H$m Ap V d Am`{ZH$ `m {JH$ H$s ^m {V hmoVm h & 2+3=5 AWdm {Z Z{b{IV A{^{H $`mAm| H$mo nyU H$s{OE : (i) PbS(s) + O3 (ii) XeF6 + NaF H$maU XoVo h E {Z Z{b{IV H$mo B {JV JwUY_ Ho$ ~ T>Vo H $_ _| `dp WV H$s{OE : (i) dJ 15 Ho$ hmBS >mBS> dWZm H$ (ii) dJ 17 Ho$ hmBS >mBS> A br` gm_ ` (iii) dJ 16 Ho$ hmBS >mBS> AnMm`H$ JwU Draw the structure of the following : (i) HClO3 (ii) (b) (a) 56/4/1 2+3=5 H2S2O8 Give reasons for the following : (i) Above 1000 K sulphur shows paramagnetism. (ii) Although electron gain enthalpy of fluorine is less negative than that of chlorine, yet flourine is a better oxidising agent than chlorine. (iii) In solid state PCl5 exists as an ionic compound. OR Complete the following reactions : (i) PbS(s) + O3 (ii) XeF6 + NaF 13 P.T.O. (b) 27. (a) Arrange the following in increasing order of property indicated, giving reason : (i) Hydrides of group 15 boiling points (ii) Hydrides of group 17 acidic strength (iii) Hydrides of group 16 reducing character {Z Z{b{IV $nm VaU {Z nm{XV H$s{OE : (i) p-ZmBQ >moQ>m byB Z go 2-~ mo_mo~o OmoBH$ A b (ii) (b) monoZmoBH$ A b go Eogr{Q>H$ A b C5H10 AUwgy dmbm H$moB Eo H$sZ Amo OmoZr-AnKQ>Z mam B Am a C, Xmo `m {JH$m| H$m {_lU XoVm h & `m {JH$ B YZm _H$ \o$qbJ narjU XoVm h VWm Am`moS>rZ Am a NaOH {db`Z go ^r A{^{H $`m H$aVm h & `m {JH$ C \o$qbJ narjU Zht XoVm na Vw Am`moS>mo\$m _ ~ZmVm h & `m {JH$ A, B Am a C H$mo nhMm{ZE & 2+3=5 AWdm (a) {Z Z{b{IV $nm VaU {Z nm{XV H$s{OE : (i) ~o OmoBH$ A b go Eo{ZbrZ (ii) ~ mo_mo_oWoZ go EWoZm b (b) {Z Z{b{IV _| _w ` C nmX/C nmXm| H$s g aMZm {b{IE : 2+3=5 56/4/1 14 (a) Carry out the following conversions : (i) P-nitrotoluene to 2-bromobenzoic acid (ii) Propanoic acid to acetic acid (b) An alkene with molecular formula C5H10 on ozonolysis gives a mixture of two compounds, B and C. Compound B gives positive Fehling test and also reacts with iodine and NaOH solution. Compound C does not give Fehling solution test but forms iodoform. Identify the compounds A, B and C. OR (a) Carry out the following conversions : (i) Benzoic acid to aniline (ii) Bromomethane to ethanol (b) Write the structure of major product(s) in the following : 56/4/1 15 P.T.O.

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