--- · 12/09/2013 · fl l 3631 19. Lrr6iLDLb 6r6iiTugl 6 E;lrisaru eroupfiein a-'glLori seoT+eu ? 21. (.er ) u neSlu9lein sa,9lnu u&s&srar Lb (.er-) arn-ainr ar9l6l Ul6D6erg g

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3531

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l

5.

)

AC = AH x rAS (d) AG: 3trTAS

(=gr)uP (q)ucl (St) uer (rr) HI

(d) Hr

Among the Halogen acids, the weakest acid is :

G) FiF (b) HCr (") HBr

3. 2HI= H2+I2 ereinp sLo$)aoeu o,glaleuuglo Kp €6ngrl :

(er) K" g or91r* .+1$1oLb (+) K. g or9L& (g6op6q

(g) K"619 +LoLb (m) Ug$urb

In a reversible reaction 2HI = H2+I2 \ is :

(u) greater than K. (b) Iess than K.

(c) equal to K. (d) zero.

4. 61uoiu sr-rqeun +ppeCIcio etfu@Lb LonfpLb :

(sr)AG:AH+rAS (g)AG=AH-rAS ($r) lc:luxrAS (n) o"=#

Change in Gibb's free energy is given by :

Garneuqo6in .er r-61 euridl eb ar eSl en Lo rselr m fi ssr ers,r ?

(u) AG:AH+rAS (b) AG:AH-rAS (c)

(.er ) i.u nriLonef n-eoanGl

(61) Cl u eine n6l Len am [i)

(u) Formaldehyde

(") Benzaldehyde

( g ) .sldl L-l-nei q6r,@O

(m,) reop GLo$$c;b er$lrrno q6oeD@

(b) Acetaldehyde -'

(d) Trimethyl acetaldehyde

The compound that does not undergo Cannizaro reaction is :

HSE SEPTEMBER 2013 www.kalvisolai.com


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6. L$enermu q rr'y@t Glsnelri.r rr,erfl erg ?

(et)NH, (+)Hzo (6) No. (") i-An example of ambidentate Ligand is :

(r) NHe (b) H:o (.) No; (d) r-

7. C6H'NH2 --Na\ft|% X, X ereinugt :

(sr) C6HsCl (g) CuHuNHoH (6)) C6H5N2C/ (n.) c6H5oH

c^HrNH, NaN9::/HCl , x, identifl, X :- 0'c

(a) C5H;C/ &) C6HjNHOH (c) CGH5N,C/ (d) C6HEOH

8- gg o6lenaru9el Eu-0 LoEgd 300 K 6l K:4.2x"r0. sec-1 e-e#reb 3r0 K 6l K 6inodluu

'

(s) 4.2x105 sec-t (.g) 8.4x105 5gg-r

(St) Z.+xtO;5ss-r (r,r-) 4.2x10-s sec-r

For a reaction Eu:0 and K:4.2x105 sec-1 at 300 K, the value of K at 310 K nill be :

(r) 4.2x10s sec-1 (b) 8_4x105 sec-l

ic) 7.4x105 sec-1 (d) 4.2x10-5 sec,1

9. arr$p,anar@serfleb s$lrfiu&o$ peineno e-eorugl 6rgl ?

(er) EfluLb (g) qGprldg$ullb (g) ponetrftuLb (n) g1L*reduLb

l4lhich element in Lanthanide is radioactive ? ..

(u) Cerium (b) Promethium (.) Holmium (,1) Lutetium

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3631



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3631

10. r-9leinou1gou el.rol pdlnb er$ .at$e ereu$L*7nein sorrri peinenlo GlsnarrL_g ?

("a) uqgrfleh (g) gGornrflein (S) qGTndei;r (r=r,) .9GunLq6i.rAmong the following which has higher electronegativitv value ?

(r) Fluorine (b) Chlorine (c) Bromine (d) Iodine

1.1. 6pn@ gaopu9lel SO, g gii;EgGai$pib Gl+urqLb o6leo emug eu erq eo enGeri sLon$flu91ein Bria :

(.er ) esrou (+)vzo; (@) Fe,o3 (n ) CuCl2

In the oxidation oI SO, in contact process the catalytic poison is :

(a) As2O3 (b) VzOs (c) Fe2O, (d) CuCl,

13. @O e'gn6 rdeinGennrr$aop 919 rfieiirugoflri ea;lear orglGul Glag$grLbGunglr6leom,

(g) geu6e;'g ereoL-

(r'r) 96 dlpnLb

L6leinar nrr9leu uqqLb Glu n1gaflein

(er) eLonem $)enp

($) dletrcar$ii elDn6dr 6r-6olr

l4rhen one coulomb of electricity is passed ttuough an eleckolytic solution, the massdeposited on the electrode is equal to :

(r) equivalent weight (b) molecular weight(") electrochemical equivalent (d) one gram

L4. SFu greuBa.'flef zeirar @eor6seuuq :

(gl)'p3 (:B)'p3a2 (61) 'p3d

(.) sp3d

( r.r- ) sp3d3

The hybridisation in SFo molecule :

(a) sP3 (b) sp3d2 (d) sp3d3

'12. ar$p GeriLo6 6t.r19 eLo$lareu Lon$$lu$enpri enr_@er$)eleoeu ?

( et ) arpL-Ggr ClueinSein (q) eopl.GTn dgcpeir($) argirGyn ngGpein

I4{rich of the following compound

(a) Nitro benzene

(c) Nitro ethane

(") z - aopr*Gqn qGpnuGuein

doesn't show tautomerism ?

(b) Nitromethane

(d) 2 - nibopropane



5

15. Clu ein#;oem ettp_Gyn q$pb Gl+u_rq o ereuiir_,ynein souri snrJeirfl :

(er) empo r--G rrnofl u Lb exuafl (g) eefGrnofl& etuelfl

($) arpL-GTnerfluLb axuerfl (r,i.) qGrynarLo@ elruerfl

Electrophile used in nih.ation of benzene is :

(u) Hydronium ion (b) Sulphonic ion

(c) Nitronium ion (d) Bromide ion

36 31

16. r-9le,urGL-neSleirr IUpAC Gluuri :

(a1) r9larn68 G rein$eir

(S) rfgpnd;dl GL,oin8ein

IUPAC name of Phenetole is :

(r) Phenoxy benzene

(") Methoxv benzene

(.ry) m$pnr;E Gluein$ein

( r,r. ) qGTnLrunGE Gluein$ein

(b) ethoxy benzene

(d) Propoxv benzene

'17. gzX232 - rrY220 ereinp a$rfluris ergeoeougleb Glerraflu5lruu@Lb a LofgLb pgl aeire ofl ein eraineurflSaos :

(er) 3", 3B ("z,) 5o, 3p (g) 30, sB (*) so, sF

In the-following radioactive decay ,rX232 - sg\220 how many a and p particles areejected.

(u) 3o,38 (b) 5cr,3B (") 3o,5B (d) 5o,5g

18. LSlorgoeoend seufri.E ereinugr a,prorfucaiein :

(er) gafluqup uainq (g) Sludsu uai,rq

($t) Ldeironug uanq (m) sn$pu uainq

Electrophoresis is a _- properft of a co[oid.

(u) Optical G) Kinetic

(.) Electrical (d) Magnetic

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3631

19. Lrr6iLDLb 6r6iiTugl

6

E;lrisaru eroupfiein a-'glLori seoT+eu ?

21.

(.er ) u neSlu9lein sa,9lnu u&s&srar Lb (.er-) arn-ainr ar9l6l

Ul6D6erg g rt r-9lL_ r nel s eir

filnuuuuG)dmsr-

(S) +"'."n ppgt6urb (")

The molecular orbitals are fi1led according to :

(a) Pauli's exclusion principle. (b)

(.) Aulbau principle (d)

Cl s neir eo s r-rSl eiir u q era;tiL-Tnanneu

6leoar .qeneodsrLb

Hund's rule

A11 the above

(et ) 6ram@ $aioiLoriaoir (g) 6tra;r@ $fLorusoir

(A) 6rah0 erlnqriueir

An emulsion is a Colloidal Solution of :

(u) two solids

(") two gases

(") gCf $airLoLb, gg $irLoLb

two liquids

one solid and one liquid

(b)

(d)

20. er$p flelern e-uq qeoeLrrL-$ Clpngle6)d-l uueinu@6lpg ?

(.e) escl (g) AgNo. (6) eer

(.) AgF

Silver salt used in Photography is :

(u) AgCl (b) AgNo3

H rlprus0n 6T6rTU6DOj :

(€1 ) un6Dl blulr6ol-o]56fr

(Sr) ueuurl Sarnair

Proteins are :

(u) Polypeptides (b) Polyacids

(q) ueuurg errdleu rirseir

(r+) une$l erciur-ns6ir

(c) Polyphenols

(n) AgBr

(d) AgBr

(d) Polyester



25.

24. onpgp$lguq9$pew 1,..722 BM Glsne*' gq9 $tenr$loeu$ paflLc$$lei: reirargerfl$g oreu6uTneins6rfl6in a-alrrelrflriats , " - *

(gl) 1 (s)z (6) 3

A'd'block metal ion has a magnetic moment of L.732 BM.electrons are :

(u) 1 (u) 2 e) 3

3637

23, 8:8 a._reos

(er) lagr,

\A/hich one

(u) MgFz

<9{6orou q zoirorr urgsD?

(g) cscl

of the following crystal has g :

(b) CsCl

(gt) KCt

8 structure ?

(.) KCI

(n) NaCt

(d) NaCl

(m) +

The number of unpaired

(d) 4

ereinL-Gpnr5l ugleiir SI e1arg

(.sr ) Cat K-1 mol-l

(61) I aeg-1 mot-z

The SI unit of entopy is :

(u) C-al K-l mol-1

(") J deg -1 m6i- 2

(c) Blood purifica bion

(g) erg K-1 661-1

(n) I K-1 mot-1

erg K*1 moi-1

J K-1 661-i

(b)

(d)

26 . Cl s""" u rr6fl 6in eb gr66lu: uril1g eudl66pg :

(et ) arerrridlarp Lorgp$$rci;

(6) $trppp-pg gnura:LoLru@gg1p60d (FF)

Cephalins have been implicated in the process o{ :

(a) getabolism (b)

(q) zr-@a,gsarerr $)riamugl$perllci.r

CIrppO zarppefleir

Organisation of the body

Blood coagulaiion(d)

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3531 8

gBGoru n Gp ri .el ur afl sao eir llgou nri 96l eirm em.

f .gr ) ar nrisanenGlseir

($ ) zu/flu 6u rru-.lri56ir

forms oxocations.

Lanthanides

Noble gases

(q) qiiqeoem@seit

(n) sng lGeDrsrls6ir

(b) Actinldes

(d) Alkali metals

(u)

(.)

(d) 0.4

(q) Clu einanu9[i et r.6loLb

(r,r.) Gluein$ein

(b) benzoic acid

(d) benzene

zg. gg o6lararu9lein greinGenn&g or9lenar Lofg6 r9einGenn6ig or9lenenu-llein e6leoeurGerrs

Lo nflerSlseir greopGu 8x-10- 5 Lo$gLb 2x10-a eraoflei.r K. eiir Lop'rq

(ei) o.oo4 (g)0.02 (CI) 02 (n) 0.4

The rate constant of the forward and reverse reactions are 8x10-5 and 2x10-arespectivelv, K- is

-.

(u) 0.004 (b) 0.02 (") 0.2

29. Srfl6enn#@ e,9leoemu Glr nlgoir Glsnain@ pu:nrflBs (gqurp etrileuLb :

(er) er8rqd sl6leuLb (q) J.u nriu61& erriloLb

(r) Glreinenu5[i g r6la;Lb(S) rQgrnd .gldla;b

The acid that cannot be prepared by grignard reagent is :

(u) Aceiic acid (b) Formic acid

(") Buiyric acid (d) Benzoic acid

30. Seonar',eu Zn grqgrein onu-r&E a:qdlgLbGung dlaoruugt ergt ?

(.sr) Cl u eine n6D Loeo am (i)

(6t) Clrna;reSein

When phenol is distilled with Zn dust it gives :

(a) benzaldehyde

(.) toluene



3531

u(96l -rrlPART-rr

Odlull , (') oGggu,n u$le,oem$gl orQarndeqgiilg aslarruofl.

Note :

He, €ea e*1gor nser!)ebareu?

It'hy He, is not formed ?

\A/hat is the atomic radius of chlorine ?

32- cl-cl 6in r9laraoru q $onLb 1.98 a eredel lgGennflein eg)6rgl6in gTLb ereinem?

The value of Cl-Cl bond distance is 1.98

33. punoflein uueirsarangi prge.

Give the uses of Neon-

34. HF g sarrao-rrrq unurgebeoflei Gedl6s6 *,i*ngl erein?

Whv is FIF not stored in glass bottles ?

35. $orrpanalp, peoflLo rirseir p_Ga;nsri 56D6Dot6Dur e_q5otn61galgr oein?Why do transition elements form alloys ?

35. 'Eeun.rurieiu cLbuofl'ereinpneil ereinar? e1g erelal np Glupuu@gpgt?I4lhat is philosopher's rvool ? How is it formed ?

37. Gar$1 er9la;enrig Lb zrrsqg orgleoearri1gr-b e_eiron Gargun@seir qpeinarp$ p6o.Mention any three differences between chemical and nuclear reactions.

38. r91nri eoeinunL_Ealerr erqg$l o5lontilga.

Write Bragg's equation and explain the terms.

15x3=45

(i, gerGlau n(E or9lennorglS (96 geinE gr|6bargl 6lrlain61 er nri6l u rfu eafl eu

er9la"ruu afl.

(i) Answer any fifteen questions.

(i, Each answer should be in one or two sentences.

31.

A,

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3631 10

39. 6ri (373 K) -+ $rnofl e73 K) era;rp G+ugrarpu9el areinrGrynr-g Lon$p$arpoemri6l@a. AHyuo:40850 J mol-t (at 373 K).

Calculate the change of entropy for the process water iiquid (373 K) + watel vapour(373 K) involving AH,ruo = 40850 j mol-r at 373 K.

40. r9leinar(Dd ge! Gle, neinfl$ 19 Lb gri eo$leoeu arnq ogaoenmu-L [email protected]$Sr'lh6 :

(, an*=o (it) An*= aY"Give one gaseous equilibrium reaction as an example for ihe following :

(i) Anr:0 (ii)

41, e6le.oem ateos eit6Dful0l.

Define order of a reaction.

An*: a Ve

42. $laroror or9laoeoseir ereinp nel ereinor? er@$grrisnL_@ p1gs.

!\4rat is a para1le1 reaction ? Give an example.

43. CLebrn 6r6irdng rqgou n6lpgt?

How is Delta formed ?

44. ,6flein .queoftu Glulg6sLb ereiirpnei ereinen? etpein Lo$luenu$, g6s.What is an ionic product of water ? Give its value.

45. $enneinslGun6lLori, rurnaur-rflGu-rnGrLori qdluoLpeogr Gor:Eu@$$l snr--@o.(o gnougr proeirrnr)

Distinguish enantiomer and diastereomer. (Any three)

46. er$$ler5ei+ dleoenrisneoeu 1,4 6aL g&Geenns LonpgLb orgleateneou-t 6r(g916.

Write the conversion of ethylene glycol to 1,4 - dioxan.



11 3631

47.

48.

Slaoooru q efleoororur ff(ggls.

Itr/rite the coupling reaction.

gel q6opD@e€Drisnen $q9 Genpeooreeoorr$ p1ge.

Give two tests for aldehydes.

49. LonGann, 6oL, L6niI lgGarnGyn e16rrq6 .grfleuLb qguorltfleiirer rSla;$peineo Loat ur gLrGl@s.

Compare the strength o{ mono, di, trichloro acetic acid.

50.. A, B Lo$gLb C eou-L eainrplo.

cH4-H*--rA sn/Hcr )B

Identify A, B and C

cq--z )

HgC l,

cH* -ffie sn/Hcr )B -#;*a

51. L9gorn N ar6D6 puuri crei.reu ng punrfi6auu@6lpgr? erp6in uuein geinflaoor$po5-

How is Buna-N rubber prepared ? Give its one use.

u1g$ - tu7 rART - rrr

(gdluq , gelGloung r51rflo6e819$gl6 lgeop$guL_+Lb $)q5 aglenn6aar6rr Gpfr$6p@$SjClon$pLb crqg or9lenngeqgrilg e0eoruofl 7x5=35

Note : Answer any seven questions choosing at reast two questions from each section.

,Slflq -glSection-A52. q - L97n&afl sroeiruruLqaoenp pg6g

Derive de-brogl ie equation.

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3631 t2

How is gold exkacted {rom its ore ?

54. paiLo eu rflare .9lLr-6rr6o666Tu5leu eun$peoen@sofleir $lrib uffl e6lflerLns 6r(rgt6.

Discuss the position of Lanthanides in the periodic table.

o ni s Lb ( Gs r6D r .) .ersein s nsr er9l er5l rn rhsr are! ar n rnr Gl rfl iiGlsfi) ris u u A 6l msr ?

K, [Fe(CN)u] 6r6inp et6o@nerl G+nLo$$1p6, r-9leinarlgarcoa.r$eopri gflise4Lb.

(er) IUPAC Gluun (g) artou-r e-Go ne s1u:afl (S) "*f]( n') eteoarroq arorr (e-) oL qer Lb

For the complex K, [Fe(CN).], mention the following :

(r) IUPAC name (b) Central metal ion (c) Ligand

(d) Coordination number (e) Shape

r$/[lq -ag/sECrIoN-B

56. Gleuuu $lu-r6sofluo5lein $lfainurLb 6{l$lu!l6i,r uoGorg *'pEeoror 6r(rgls.

State the various statements of second law of Thermodynamlcs.

57. e$ enl-66lurf Glsneirenseou.r uueinu@$$ Glpn@ gaopu9leb ei$le st6n6r{ SO3

G u mr er s rhrs Gsaoar u ren fii -r mseoeusenerr 61110&16 -

Apply Le-chatelier principle in contact process and write the conditions to obtainmaximum vield of SO--

58. eroflu-r er9laremri;qgLb,6risaonen er9laoelr&1gb $tarL-Gu e-eirmr Gor.rgun@saren$

&/th&.

Give the differences between simple and complex reactions.

55.



59. E$r;;angr6 r.0tinsor$$leiir emf gqLb, 66u 66l6n66ru9l6irr prL_ eL_rgebeun +pp6no n$p$alpq tb oarr66l@e.

Znl213+ ll Ni2+lNi Eor-2+,.- = -0.76 V

EoNi2*lNi = - 0.25 vDetermine tlre standard emf of the cerl and standard free energy of the cell reactionZnlk?+ !l Ni2+l Ni Eoznr* lzn= - 0.26 V

Eo*,:r 1mi = - 0.25 V

13 3537

LShflq -StTsection-C

60' erGgnGoL-rq& r'i'pri, +y er5ru r irr-r16 .rprioqg&6rarL-Gu: e-eiror Gougun@seoorgpo6.

Give the differences between aromatic ether and aliphatic ether.

61. eeinaflenGg n or{laremuglein orSlaoen atglgrop6Dur 6r(9916.

Explain the mechanism ol Caruizzato reaction.

62. a;nBq6 el l6leuLb S!;r;aa;,nL_ar$g L_ein efleooruSleo6lTp p(Do.

(er) I ueinr-neirr a7arfl

(q) 6,tpp +lr6loLb sorgp KMnOu

(S) $rigp Hrso,

Cive the reactions of lactic acid with the following :

(r) Fenton's reagent

(b) dilute acidified KMnO,

k) dilute HrSO,

63. enurr6rs6fl6irr gr_Gr_no6'_ ,$lp6 rflqidl _ $)p6 e_uri$$, Glsr6ir6i)s6our 6r(gg15.Write Otto witt 'chromophore and auxochrome, theory on dyes.

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3631

u(gSl - IVl PARr - IV

qgfluqasir : (,

(ii)

GLon$gLb gnoing or91arniis€D{ig ar9leoi-uofl

t4

4x10=40

Note : (i)

(i,

orSlarn erom 70 rilg al.l-nu:tora el5l6olu6rfl6su urei Goremr@Lb.

dp go ehor o6l ar nlis6rfl 61 6rcp gr 6 grsing a,9l emn6s qgri go6len ru afl .

Answer four questions in all.

Question Number 70 is compulsory and answer any three from the

remaining questions.

dispersion and Electrical dispersion

64. (.t) ereu6rynein pnrr$eop un$ri15Lb srTemflselren e,91orri19u

(g) lnrnGe TirGeu greopugc;b srp$1eS1ry$51 topp ernqbseoen 6ro1 o,r rpl

rstrfl$Clp@Lrrnur?

Explain the various factors that affect the eleckon affinity.

Ilow will you isolate noble gases from air by Ramsay - Raleigh's method'

65. (et) et eoeoliq Gsi LDrErs6ir ufflu Gler riarri Gls; neirerro u9lein sqlgl Gureirseoor

6TrL0&t5.

( g ) gf1 u erfl a0 O,Egl s$s stdr6q +pp6l G1 orL er1l or91 i-u r @orp$sr6ir 5r[6'nlb

ereinen? etrfu(g $lsqgri L.l er-rorens er9leoemsenerr 6r(951s.

Write the postulates of Wemer's coordination theory.

l\41at is the reason for the release of high energy from sun ? write various reactions

taking place in the sun.

(u)

(b)

(r)

(b)

56. (et) o+ru6l LofpLb uG1lrilseu lSarpun@seoen or9lar rfl'

( + ) 6r rpd r* Earp$pd Lo$p Lb rfleinarn$ Earp$patu garpoofl eu a'1lroraseoen

ere!eu rm 6uiIrflu L]rur ?

Explain Schottky and Frenkel defects.

How are colloids prepared by mechanicalmethods ?

(o)

(b)



15 3631

67. (.a) rfleinugafl sr$gr$$p6in u$$,lu elneyflerfluoru Glsneirarsuglein sggrGsn6irsolcn 6r(ggt5.

(g) Gp ririreiu L- el.DeinunL_rqeoen ouqgergl.

(u) Write the postulates of Arrhenius theory of electrolytic conductance.

(b) Derive Nernst equation.

68. (.gr) rnriL-nrfl& .err6)a;$$tcil eneruruu@rb gafl sp$61 Lorsflu$arpu r$$)6rr$616-

(g) rQeiror6Lb on$pruseir 6r6ilot ng Oe $6leinp6rT?

(u)

(b)

(, en66lE6SlB errileuLb ->

(ii) +ne$l8cSlti aqrfloLb -->

geiu r9l rfl ein

C o$$lci; +ner5l6l Geu r(iii) eiClL-rarLoO -) ClLop$eb elrfein

Explain the optical activity phenomenon in Tartaric acid.

How are the following conversions carried out ?

(0 Salicylic acid

(ir) Salicylic acid

(iii) Acetamide

Aspirin

Methyl salicylate

Methyl amine

69' (er) eopr-yoiu elrdlo$5tL-ein grfreoe6r'ru, nfranem.rur .opgLb qglargarauru-.r €r 66ins6iTa-eirar ng orgleoenq rfldleinpem?

( g ) snriGr narpo L-G7r-@seir eu aosu u @$peoeu p6s& trneirp sqryr_-ein e6l ou rfl.

How do primary, secondary and tertiary amines react r.r,ith nitr-ous acid ?

Outline the classi{ication of carbohydrates giving examples for each.

(r)

(b)

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70. (sr) C3H8O o eingl qgoeu&a'g ornuruL-lrr06olu-i 6rflLos GenLoLb (A) grsraiu

orieoenu u n@ reir 5-10 prdlL-ruoafleD seurEs6D p6i[6o LD G)sn@r;6lpgl (e)

PlI, e-reiir (s) A p(Edlp5l GeftLD6 (B) flcilarri aopL-enrJr@L-ein G+iLoLb (C)

A pt9dfpg, GeiLoLb (c) a;prrioiu e1r-8eu$5rdir ,E* ,6lpp*p podl.DSl

(e) @) LopgLb (C) gd; saimrfl$5 er9)eoenseoon orller+gs

(q) gGrlnr-6u$$lein i9:edup prgl6rrr6n (-\) e-a't -=- '1j;; eGr-'5Lu$$eingr;EGgenpp eroon +3 +19lb (A) z-il \:-Cur: ' ;: ;::;; i0

crSl aoeos 6116fi or9ler-3gs.

(6)

(")

eslarerrqfg (C) A pOdlpO (C) B KCI 1-6x o9r;oem- r$'pp 1o 1 4$ Z 1) ; A(A), (B), (C) Lofqri 1D.1 P6 t(:: -: :; ''': r'*l';n sal on a8e-'819a'

S{ 6D60gt

CrLl u er etr p or iru..: L- - n l i ;r clG lrn Lo nqri ar go LqG rJrs n nu eirr (A)' Vlou

goeined eo er; r-r9 o,i 773 K Glou, ,u$eoeuu9lol gr;flgGenSpib etaor$5 CrHuO

ereinp eunurLrur@eoi*u-r, se$g u irpndleir orl lre6o6[Iu ]6tr)Lu-l (B) A ggdlpgi

GerLDb (B) etflrrq6 $ rfle5l m!9Lb Ganr-qu ri .gflrG'-r a;uer'or q reiir

e$aoarqfl$g (C) ereinp 6l-p.qpnp elrJleu$arp$ pOBrO sp6in

arnuruun@ CrHuO, ereirpnd (A), (B), LrppLo (C) g& sainrf ' e 'isoorro$lenensa-,er e$ end, gs.HCi, CH3COONa ioDgLb NaClein aLonen ar$5lLn $peinem Lct: ''e*"6tnun $nppeSlefu 426.16,91.0 LoEgdr 126.45 gLb-1Glu rf 2 (d) aLo"eri -, -:

g6ib. er8rqri errfleu$$len eLonem ar$gl $lparor6 seontit8@o'

,t"r,irgunic compound (A) C3flBO r'r'ith l-ucas reagent gives turbidity afier i - 10

*inutIs. 1n) with PlI, gives"(B). Compound (B) on treatment with silver nitrite

gives (C) which givei 6lie colour u ith Nitrous acid' ldentify (A), (B) and (C) and

explain the reactions.CJmpound (A) is the chief ore of chromium in which chromium erist in - 3

oxiclition state. (A) on roasting with molten Na.CO3 gives yellon' coloured

compound (B). When (B) reacts r.iith concentrated sJphuric acid gives compound

(C) (C) o.t ir"rt-uni rvith KC1 gives (D). klentify (A), (B), (C) and (D) and

explain the reactions.

(u)

(b)

OR(c) An aromatic hydrocarbon (A) with molecular fuTl! CZH' undergoes.oxidation

in the presence of VrO, at i3 K "nd

gives (B) CTFI.O rvhich has a smell of bitter

al*onds. Compourid (B) ."o.t. with acetic anhydride and sodium acetate to give

compound (C) CeH8O2 ivhich is an unsatLuated acid' ldentify (A)' (B) and (C)'

Explain the reactions.(d) The equivalent conductance of FI9l, CH,COONa and NaCl at infinite dilution

are 426.16,91.0 and 126.45 ohm-1 cmz g ecluivalent-1 respectivelv' Calculate

the equivalent conductance of acetic acici'

-o0o



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