Pre University Board 2011 P.U.C Physics, Chemistry, Maths & Biology Chemistry - Question Paper
Total No. of Questions : 39 ] Code No. 34
Total No. of Printed Pages : 15 ]
March, 2011
CHEMISTRY
( Kannada and English Versions )
Time : 3 Hours 15 Minutes ] [ Max. Marks : 90
(Kannada Version)
A/stiiS : i) 3s 5 OTODj <$arWs5.
ii) szprt - A, B, C D ris? aro. SFrtsfe orisSe*.
D W/otot2>* .J
iii) - A oi; uozb 10 oSrisfc, azjrsrt - B afc
toOdSj 2 ssoSdoi 20 eosirtsfe, aj?srS - C c& toOcStfA
5 ssorlo 40 otfrtsfc amrt - D o&> D, 10 ctfrisfe D
1 * &
&jrtc3) 44 5 10 ojfrie&sS rf.
C*5 , t w D
iv) rte.&cbs3 eodrod ss&rts&b, riikeSdrarlsftb, zodo&e.
O CO -/ ot -C t
xt&&&8 : i) 10 sjArttfsb, B&.
7 M J ot c< _o
ii) 3s si,a!Lrt$rt odo srfdrfO eKS?o> ot> siMf.eS drtsto
' t co * o e*9 mD ct
eodoftsSe*. sirt 2ooc& o&ai&arf. 10 x l = 10
1. sJaortoo&fek, sra.icra.aAi.
* too
2. tfo&sijfs m&rtsto sorad 3ood3 risk* &do> 53df3SSe?5 ?
4. <ao o* &eOSod 224 o.e.3 asoesft STP <xb<) SoCkridoirerteo siesrarbd s.ddrteb
M j cr> *0
5. 2*3 dd srasM <aodde?> ?
_0 osA
6. >ecb dxsorid oftsft dod3F?5oft3rbd 6,ofcafc) >o1q/&o> 2ode73dr')5& ?
Cfe co _
7. srasroftckd i&oeerts SoSrtiJ/Jeo CaSO 4 do;, Ca3(P04)2 rttfCT ofcssjd) -aSzrf mozip effarbd ?
8. - N02 rbo4 oirasi oe&o> dD&raediOe5, doreasfcdc Jjseo&d ?
9. hijZS ys) d IUPAC 3o?icSs& todcCDO.
, c*3 t
10. oaod tiv odf 3rtc>oi ofcsd ussreo&ad dOddcS (Reagent)
erowcdoePiss d ?
_
;cL/a&&? .* i) ofcsdicradd 3o, drts ?ro3ps>.
ii) dofcaocb do& <adc otfrtsfe siooacbd.
10 x 2 = 20
11. ?ioafc>fY 3 5d2 -d,33sd3 E&raeQ odderfD ? odi yocroddrl dras.
" Q, C*i Q tt
12. d,wo riodd PC15 slra Soerl d3F&>3,d ?
3 Code No. 34
13. )ipTn>b*& rfcdb riaesobaocJ Al elraeso MgO aSsrf swddQ, ato&rrtrf.cS ?
14. dpSrasirtr >odderfi ? dpiradrird dpfcrt ocb srarosodai>rf 4a.
15. Sroo*rf 8 co S&raesfo) &crorfaod He && Ar rtsJsb, Aesi fcMtoiBoeS
C5 t ' 0 -/
16. 293 K o>), gbc scrf (ssrso dcra =74) wa 60 kPa yftcS. 50 nrap orfC), 3 rrep &&eodo,d d,d6 A <D)erfS33C33)rt, OTjdrsd zs> 56-8 kPa rf
d,d6 A o> rso cra&c&rf 3oS>d.
17. rfao> aedo 3s&>d,& ;3edod zaurtdS rfa? s&o5& ?raridDdrf> do&.
s/ 9 CO Ot
18. 3 200* sSjra*' &0eo> KOH Ddrad d,c&o> ,o3j3 assidrf 2odo&o.
19. & Stfftrf sS&drsdO A zb& B rttfsfc, rbdoa :
C*5 _ t
A + Br 2 + KOH ( aq } -he-a~ -> B B + NHO 2 heat > CH 3OH
20. ftss6', sSoe3dC3drf}, sodom 3De3drad> rf aodrWrfy &dO&.
rO C C5 c*
22. &3,3J3Bfe353* (Tripalmitin) oteid zorlcxb fd &ftrf ? drf &)eo> NaOH eloJ &aC3Dri >?rerb3 d ?
_s .
I. sjrWrt enjOAi : 2 x 5 = 10
23. a) enjscii &ods&o> eodsrsd 23sS,si?S> srio &os&o>0 3ojso&
* C% x C5 CO
ife/asSc C&SO&OTrt
i) 600C
ii) 900C - 1000C srastoC), d,a>rts?si $s30&. 3
b) tto sirodOaft tfsoso&aod sioesod 3IqsJ) orarttfc
)33S2j. .2
24. a) ejoqs nocS ( VBT ) tfSoX&aod K4 [ Fe ( CN ) 6 ] 53"
0 s&;& rbrasSc& rfc>c&>. 4
t c
b) sisddrad <&> soecWsraft dodolosj ssao cirosjjck ? 1
25. a) ( Li 2 ) ssfso&rf er3 s3rf6 skrte jakc zoo#
,er3oirf> eSsf, Sod, dd & diSa&k, a$rO>. 3
-/ ot 0 7 Cp <=t *
b) 3d er3c& qrasbrio M?i'(iDrra srts? sojsodOD ?radrarfec& ? 2
II. 3? 3s?ftrfsrt), olrasjjrorfdjs o&js& eroOAi : ,3 x 5 = 15
26. a) e3o25?>?3 edOe&Sra (Alkylation) ,oIra asss s3e3f&. 3 b) woirseciraeesisra ft 2o??1 sj0sS.F*b>0 ? 2
27. a) liioesjredjr s), pfcTsss6, zgj5$ wioz&nart
aojosrb d ? ?ice3dfc>d?k EodcQDO. 2
ft ot
b) wdjsossaod 3oiraOsbd todD EodctoO. 2
c) dossed & dirt sdradeji) ? 1
28. a) 3s derl sjdoiDersrbd ?
i) SjFTSl&DS* Wdi d?& d023U So.CSOd 2
t CT) K c 9
ii) e&o6, oedd 135* ess&aod 2 b) H+ oirod dSs5, dOrdDd? JjseOsbsld ? 1
29. a) iidct 3rsrte dd-p* toed eraorbd apkofceS
d02j. 2
b) rliloe draris?, 3s 3$ft3srt$> odDSododjd? derl adjs&xb&O ?
i) adD orraod dddrocsorisk ?Sed sSddS>oi cb3 d 1
' C3 B
ii) ElorSeo' rtod) 1
c) Ad e-aderi & dioi/soart &e?3 $$3 oirad 0e3 riowod sSjsoad ? 1
' (?) I *
3s fdjrW, ateisroddjs dojs& drWrt eroiO : 3x5=15
30. a) AoB0eto <De?j35D0 odrad &0e?j33 rtirsoso dD&
, c?
<se5j3 rbraoso d siocooddE* ad&A - 3
I? I tt (J 8[
b) 27C 3a)dd A + B C + D dp>o& asod)
( Kp j 8-25 esftdd. ede ;>dd) 2>d d,o>o>
/"
20dCT3df!0iE* dg, SoSd. 2
t Tj
31. a) s>6dF <aodde ? j&aeo sSert
io&sasb; d ? 2
_d
b) aj$s& o&3 driFd epkobfi), e$F ,ab 3c!o&a> 15 fc&Hsirtsto
rferfccl sorrarid 40 Sossid sdo& rfoid erasdaSjaeftaSec&sS Cde)aOe)di n)is)d ? 3
32. a) dpisasSriFri s&ee3 sS&rad aedsrf osJr$c >$>&. 2
b) 0-025 M KOH pH c e3 3o3fc. 2
c) &&0)0 ifedsi (CsCl) &ra2W dsicSoie sodo&O. 1
33. a) SeaatoPfj &c&.a.m>&s. )Oi?K?ro A>roo3d sSxradD essracSjaorte*,
7 CO w * o c? t
Sjd'om 3
b) wdsSr sS: sjscSsSf C3drari!l <ad;& ssris sSt 2
34. a) descrasSofc risoaftSod d,ojja s&rid s&ee5 &da$s3j*>?3ti siSfs&d?
asiOA). 3
b). stoiOdeoa ?jd $>&3l&ezsb<kck3 TfoaoftfS asad. 2
&23rt - D
IV. ? $<$F\zSz>Ti<$)n ate)Sddja os& sdrl : 1 x 10 = 10
35. a) lesSo $aO>orf 5ja&3a&c&o c&is&eWe eras'apskd arasfe
asso*. 4
b) ' dozoro NaOH 2l yrtod dOrdod? ?
si&drad;* d/sa. 2
ot
c) koc> &>csoiti<l - OH rtoosrt'Sd ? 1
d) NH ,OH di&f NH .Cl dd, d d.Oiro O&defc, &d0*). ' 3
Hr 0 4 CP 7 Cp S' -/c<
36. a) sSdofc *Joao3 ritf drfro* o3d f3t>03, dsradrteto wdotoB. 4
co _o qs tr _ at
b) dxtoB? ds;& wsS) ris?<> cbd ,eOoie ASdrooriJoi
co _o *' coco eo ot
)d0&. 2
c) riOjds slisoackd zod: dfioe d odi erorocodcl &3S. 1
d) eodsrod uzS Tososafeaod 2>3 kokkSsI adcssid ( SHE ) ds3?S do o&r&qjarfdF <ado.v 3
D 2
V. 3s fidiris*, oiraroddjs <addo srtert : 2x5=10
37. a) sadaod p-siOjesloeeAiyraacd oiraeri2n>da&0 3o&ao*bd
<Drarfd dOAj. 3
b) dlirsesjM toOdi doec&rfi &d02j.
38. $.* W(Dd eocfc ssaSKoio d,$do drird stoertJL 3oooQ&c>
<y co -/ 'o' v cs
<aods JjseDSe tods dpiraertd? >d0&. 5
Code No. 34 8
39. ess&k CTaraco enDSjoiraefiAi s|p&3Do>o sjrfjsrorirfe
crdfa$p&s%>o&o 3tfs&saF0rts5e&3* stfosSjarssS; w.oloertcj,
c-y \
#i :
i) w d,G&ccb sJ&dfsd sodcsoo. 2
ii) sp&332)0>0 sjsirarQrtfSerf sisterf <?&. 1
iii) sj,c&3eri53)rt erasJoSjsesS ?1& o&sk ? 1
iv) dpfcafc esrted sacd d<sradcl &>?& ? , 1
/
(
ii) Parts At B, C and D are common to all the candidates.
iii) Part A carries 10 marks. Each question carries one mark. Part B carries 20 marks. Each question carries two marks. Part C carries 40 marks. Each question carries five marks. In Part D D t carries 10 marks and D 2 carries 10 marks. Each question of D 2 carries five marks.
iv) Write balanced chemical equations and draw diagrams wherever necessary.
Note : i) Answer all the 10 questions.
ii) Questions have to be answered in one word or in one sentence each. Each question carries one mark.
10 x 1 = 10
1. Define partition coefficient.
2. Why are transition metal compounds coloured ?
3. How are antibonding molecular orbitals formed ?
4. How many faradays are required to liberate 224 cm 3 of H 2 from acidified water at STP ?
5. What is meant by relative lowering of vapour pressure ?
6. What happens to change in entropy when water is converted into ice ?
[ Turn over
7. Between CaSO 4 and Ca 3 { PO 4 J 2 which one is required in maximum concentration to coagulate positive sol ?
/
8. What type of mesomeric effect is exhibited by - N02 group ?
9. Write the IUPAC name of picric acid.
10. Name the chemical reagent used to remove colloidal impurities from oil.
Note: i) Answer any ten questions.
ii) Each question carries two marks. 10 x 2 = 20
11. What is conjugate acid-base pair ? Give one example.
12. How does concentrated H 2SO 4 react with PCI 5 ?
13. With the help of Ellingham diagram, explain why Al can reduce MgO at high temperature.
14. Define order of reaction. Give one example for fraction order reaction.
15. How are He and Ar separated from noble gas mixture by Dewars charcoal adsorption method ?
16. The vapour pressure of ether ( mol. mass = 74 ) is 60 kPa at 293 K. If 3g of a compound A is dissolved in 50 g of ether at this temperature, the vapour pressure falls to 56-8 kPa. Calculate molecular mass of A.
17. Explain the formation of delta when a river meets sea.
18. Write the mechanism involved in the reaction between tertbutyl bromide
and aqueous KOH.
19. Identify A and B in the following reactions :
A + Br 2 + KOH ( aq ) -> B
B + HNO 2 h6-t> CH 3OH
20. Write Gibbs equation and explain the term involved.
21. How is phenol converted into salicyl aldehyde ?
22. What type of glyceride is tripalmitin ? What happens when it is boiled with aqueous NaOH ?
I. Answer any two of the following questions : 2 x 5 = 10
23. a) Draw a neat diagram of blast furnace and describe the reaction
that occurs during the extraction of cast iron in furnace at
i) 600C
ii) 900C - 1000C. 3
b) With the help of electron sea model explain lustrous property of meted. 2
24. a) With the help of VBT explain the geometry of K4 J Fe ( CN ) 6 ]
and predict its magnetic property. 4
b) Name the most abundant noble gas found in air. 1
25. a) Write energy level diagram for Li 2 molecule and calculate the
bond brder. Predict its stability. 3
b) Why do 3d elements exhibit variable oxidation state ? 2
II. Answer any three of the following questions : 3x5=15
26. a) Discuss the mechanism of alkylation of benzene. 3 b) How is ethanol converted into iodoethane ? 2
27. a) What happens when aniline is heated with chloroform and
alcoholic potash ? Write equation. 2
b) Give one method for the preparation of ketone from alcohol. 2
c) Why is benzene stable ? 1
28. a) How are following obtained ?
i) Cinnamic acid from benzaldehyde. 2
ii) Acetyl chloride from acetic acid. 2 b) What type of electronic effect is shown by H + ? 1
29. a) Explain peptide bond formation between two alanine
molecules. 2
b) How do you show the presence of following in glucose molecule ?
i) Unbranched skeleton of six carbon atoms. 1
ii) Carbonyl group. 1
c) How is angle strain related to stability of cycloalkane ? 1
Answer any three of the following questions : 3x5=15
30. a) Derive an expression giving the relationship between solubility product and solubility of sparingly soluble A2B type salt; Give
one exafnple for such a salt. 3
b) The equilibrium constant Kp for the reaction A + B C + D
is 8-25 at 27C. Calculate the standard free-energy change of reaction at the same temperature. 2
31. a) What is peptising agent ? How is ferric hydroxide sol
prepared ? 2
b) Half of a first order reaction completes in 15 minutes. What per cent of reactant reacts after 40 minutes ? 3
32. a) Mention the factors which affect the order of a reaction. 2
b) Calculate pH of 0-025 M KOH solution. 2
c) Draw the unit cell of CsCl. 1
33. a) Write any three demerits of Arrhenius theory of electrolytic
dissociation. 3
b) Write any two differences between ideal and non-ideal solutions. 2
34. a) With graphical representation explain the effect of temperature
on the rate of reaction. 3
b) Calculate number of particles per unit cell for face-centred cube. 2
Di
IV. Answer any one of the following : 1 x 10 = 10
35. a) Explain the manufacture of potassium dichromate from chromite
ore. 4
b) What happens when acetaldehyde is heated with dilute NaOH solution ? Write equation. 2
c) How many secondary - OH groups are present in a molecule of glucose ? 1
d) Explain the buffer action of NH 4C1 and NH 4OH. 3
36. a) Mention four postulates of Werners theory of co-ordination
compounds. 4
b) Explain stereoisomerism in maleic acid and fumaric acid. 2
c) Give one example for amino acid containing sulphur. 1
d) With neat labelled diagram explain the construction and working of SHE. 3
Answer any two of the following : 2x5=10
37. a) How is p-bromoacetanilide prepared from acetanilide ? 3 b) Give a test for ketose. 2
38. Describe an experiment to show that acid hydrolysis of methyl acetate is a first order reaction. 5
39. For estimation of KMnO 4 using standard oxalic acid solution,
i) write the chemical equation for the reaction involved. 2
, ii) give equivalent mass of KMnO 4 . 1
iii) name the indicator used. 1
iv) what is the colour change at the end point ? 1
|
Attachment: |
| Earning: Approval pending. |
