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Model Question Papers
ChemistryTime : 2½ hours
Written Exam Marks : 70 Marks
Based on Scheme of Examination as per G.O. (2D). No. 50 dated : 09-08-2017
+
NEETModel Exam Question Papers
Type of Questions MarksNo. of Questions
to be answeredTotal
Marks1 Mark questions 1 15 15Questions for Very Short Answers : (Total 9 questions.Out of which 1 question is compulsory).
2 6 12
Questions for Short Answers : (Total 9 questions.Out of which 1 question is compulsory).
3 6 18
Questions for Long Answers : (With sub-sections).
5 5 25
Total 70
Higher Secondary - First year
Question Paper Pattern (For Subjects with Practical Exam)
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11thSTD.
Time : 2½ Hours Chemistry Marks : 70
Model Question PaPer
Part - II. Answer all the questions. [15 × 1 = 15] Choose the most appropriate answer 1. The number of atoms present in 0.5 gram atoms of Nitrogen is same as the atoms in
(a) 12g of C (b) 8g of the Oxygen (c) 32g of S (d) 24g of Magnesium.2. Frothflotationprocessissuitableforconcentrating..............ores
(a) Sulphide (b) Oxide (c) Carbonate (d) Halide3. Considerthefollowingstatements
(1) Transitionmetalshavethens1–2 (n–1)d1–10electronicconfiguration(2) Cl–ionisbiggerthanClatom(3) SecondionizationpotentialislesserthanthefirstionizationpotentialWhichofthefollowingstatement(s)givenaboveis/arenotcorrect.(a) 1,2and3 (b) only2 (c) only3 (d) 2and3
4. MatchthelistIwithlistIIandselectthecorrectanswerusingthecodegivenbelowthelists.
ListI ListII Code :
A B C Da. 1 2 3 4b. 4 3 2 1c. 2 3 4 1d. 1 3 4 2
A Na + O2 1. Sodium DeuteroxideB Na + H2O 2. Sodium PeroxideC Na + NH3 3. Sodium HydroxideD Na +D20 4. Sodamide
5. Thebasicoxideamongthefollowing(a) Bi2O3 (b) SnO2 (c) HNO3 (d) SO3
6. TheWeissindicesofaplaneare 12
12
12
, , .Itsmillerindiceswillbe................
(a) (0,1,1) (b) (1,0,1) (c) (2,2,2) (d) 12
12
12
, ,
7. Excludedvolumepermoleculeis(a) 4Vm (b) 2Vm (c)
Vm2
(d) 4nVm
8. Thecompoundwhichcontainsbothionicandcovalentis(a) CH4 (b) H2 (c) KCN (d) KCl
9. Workdoneinthereversibleexpansionis..............(a) Minimum (b) Maximum(c) Zero (d) Notpredictable
10. TheequilibriumconstantforthereactionCO2(g) + C (s) ↔ 2CO(g).WhenthepartialpressureofCO2andCOare0.04atmand0.2atmrespectivelyis(a) 1.9 atm (b) 1 atm (c) 2 atm (d) 0.04 atm
[ 2 ]
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Sura’S Model QueStion PaPerS +1 Std - Chemistry 3
11. IUPACnameofCH2 = CH – CH2Clis(a) Allylchloride (b) 3-chloro1-propene(c) 1-chloro2-propene (d) VinylChloride
12. InthedetectionofSulphurusingLassaigne’stestthepurplecolourisdevelopeddueto(a) Na4[Fe(CNS)5NO] (b) Na4[Fe(CN)5NOS] (c) Fe(CNS)3 (d) Na(CNS)
13. Diels–Alderreactionisareactionbetween(a) dieneanddieneophile (b) electrophileandnucleophile(c) Oxidantandreductant (d) freeradicals
14. The ortho and para directing groups area) activatinggroups b) deactivatinggroupc) both (a) & (b) d) No effect
15. Statement I:Arylhalidesdonot readilyundergoNucleophilic substitution reactionsunderordinary conditions.
StatementII:InArylhalidesC-Xbondisshortandstrong.(a) BoththestatementsareindividuallytruebutstatementsIIisnotthecorrectexplanationof
statementI.(b) Both thestatementsare individually trueandstatementII is thecorrectexplanationof
statementI.(c) StatementIistruebutstatementIIisfalse.(d) StatementIisfalse,butstatementIIistrue.
Part - IIII. Answer Any Six Questions in which Question No.21is compulsory [6 × 2 = 12]16. Calculatethenormalityofsolutioncontaining6.3gofhydratedoxalicacidin500mlofsolution.17. Writetheelectronicconfigurationofchromiumandcopper18. Howdoesozonereactwiththefollowing(a)PbS(b)BaO2
19. WritethesignificanceofVanderwaal’sconstant‘a’and‘b’20. Calculatethevapourpressureofthesolution.Whenthemolefractionofthesoluteis0.5,the
vapourpressureofthepuresolventis0.6atm.21. SubstantiatewithreasonNH3isaNucleophileandAlCl3isaelectrophile.22. 0.12gofanorganiccompoundgaveoncombustiongave0.11gofCO2.Calculatethepercentage
of C in the organic compound.23. WritenotesonFridelCraft’salkylation.24. Predict the structure of SF4 using VSEPR theory ?
Part - III
III. Answer Any Six Questions in which Question No.30 is compulsory [6 × 3 = 18]25. WriteanytwomethodsofpreparationofTritium.26. HowisPlasterofParisprepared?Writeany2ofitsuses.27. Explainthecharacteristicsofs–Blockelements.28. DefineIsotropyandAnisotropy.29. TwomolesofH2andthreemolesofI2 are taken in 2dm3vesselandheated.Iftheequilibrium
mixturecontains0.6molesofHl,calculatekpandkcforthereaction.
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4 Sura’S Model QueStion PaPerS +1 Std - Chemistry
30. (i) DefindHalflifeperiod (ii)Thetimeforhalflifeoffirstorderreactionis1hr.Whatistimetakenfor87.5%completion
of the reaction.31. UsingHuckel’sAromaticruleprovenaphthaleneisaaromaticcompound.32. Writethetwomethodsofpreparationoffreeradicals33. CompletethefollowingReaction a) CH O MoO
4 23+ → b) 3CH ≡ C – CH3
Redhot tubeUnder pressure →
c) C6H5OH Dry distillationZinc →
Part - IVIV. Answer All the Questions [5 × 5 = 25] 34. (i) CalculatetheEquivalentmassofSulphuricAcid (2) (ii) Howwillyoudetermineequivalentmassofanelementbyoxidemethod. (3)
(or) (i) DescribetheprincipleprocessinvolvedinthepurificationofthemetalbythisZone
Refiningmethod. (3) (ii) Distinguishbetweenoresandmineralswithsuitableexample. (2)35. (i) DeterminethenumberofelectronsintheIstshellandmentionthevaluesofitsquantum
numbers. (3) (ii) WriteanoteonprincipalQuantumNumber. (2)
(or) (i) ExplaintheliquificationofgasesbyClaude’smethod. (3) (ii) ClassifythefollowinggasesNH3, N2, H2, CO2 as “permanent” and “temporary” gases. (2)36. CalculatethelatticeenthalpyofCaCl2giventhattheenthalpyof (i) sublimationofCais121KJmol–1 (ii)DissociationofCl2to2Clis242.8KJmo
–1
(iii) IonizationofCatoCa2+is2422KJmol–1
(iv) ElectrongainforCltoCl–is–355KJmol–1 (v)∆Hºfoverallis–795KJmol–1
(or) DistinguishbetweenOrderandMolecularityofareaction37. (i) CommentontheconstantvalueofEnthalpyofneutralizationbetweenstrongacidand
strong Base. (3) (ii) DefineZerothlawofthermodynamics (2) (or) (i) Discusstheprincipleandprocedureinvolvedinpurificationoforganiccompoundby
paper Chromatography. (3) (ii) Whyorganiccompoundsneedtobepurified (2)38. a. Givethestructuralformulafor (i) But-1-ene (ii) 2-methyl2-propanol (iii) MethoxyEthane (iv) Ethanedioicacid (v) (N-methylamino)methane
(or) b. Anorganiccompound(A)ofMolecularformulaC7H8ontreatmentwithCl2 in the presence
of sunlight togivecompound (B)ofmolecular formulaC7H7Cl.Compound (B) reactwithZn-Cucoupletogivebackcompound(A).Compound(B)onmildoxidationwithCu(NO3)2gives(C)C7H6O.Identify(A),(B),(C).Explainthereactions.
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Sura’S Model QueStion PaPerS +1 Std - Chemistry 5
11thSTD.
Time : 2½ Hours Chemistry Max. Marks : 70
sura’s Model Question PaPer - 1Based on Scheme of Examination as per G.O. (2D) No.50 dated 09-08-2017
Part - II. Answer all the questions. [15 × 1 = 15] Choose the most appropriate answer 1. Thetotalnumberofmolespresentin111gofCaCl2 is ............... .
(a) Onemole (b) Twomoles (c) Threemoles (d) Fourmoles2. Amineralfromwhichmetalcanbeprofitablyextractediscalled................
(a) roasting (b) ore (c) smelting (d) alltheabove3. Whichofthefollowinghasnoneutronsinthenucleus?
(a) Deuterium (b) Helium (c) Hydrogen (d) Tritium(e) Analphaparticle.
4. Whichelementhasthegreatesttendencytoloseelectrons?(a) Chlorine (b) Sulphur (c) Francium (d) Berylium
5. Deuteriumwithoxygengives(a) oxydeuterium (b) water (c) heavywater (d) alltheabove
6. Quicklimeis................(a) Calciumoxide (b) Calciumhydroxide(c) Calciumnitrate (d) Calciumsulphate
7. Metallicoxidesaregenerally................(a) acidic (b) basic (c) amphoteric (d) neutral
8. EachunitcellofNaClconsistsof4chlorineionsand.................(a) 13 Na atoms (b) 4 Na atoms (c) 6 Na atoms (d) 8 Na atoms
9. Thecompoundwhichcontainsbothionicandcovalentis_______.(a) CH4 (b) H2 (c) KCN (d) KCl
10. Incoldcountries,ethyleneglycolisaddedtowaterintheradiatorsofcarsduringwinters.Itresultsin:_______.(a) Loweringboilingpoint (b) Reducingviscosity(c) Reducingspecificheat (d) Loweringfreezingpoint
11. Whichofthefollowingisreversibleprocess?(a) Diffusion (b) melting (c) neutralization (d) combustion
12. IntheheterogenousequilibriumCaCO CaO COs s3 2( ) ( ) ( )� ⇀�↽ �� + g the Keqvalueisgivenby,
(a) partialpressureofCO2 (b) activityCaO(c) activitiesofCaCO3 (d) [CaO]/[CaCO3]
[ 5 ]
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6 Sura’S Model QueStion PaPerS +1 Std - Chemistry
13. Theelementarystepwithslowraterepresents__________(a) rate determining step (b) maximum rate step(c) thirdorderrate (d) overallorder
14. ColumnChromatographyisbasedontheprincipleof__________.a) Adsorption b) Partition c) Absorption d) Distribution
15. Alkylmagnesiumhalidesareknownas________.(a) Grignardreagent (b) Baeyer’sreagent (c) halogenacids (d) alkylhalides
Part - II
II. Answer Any Six Questions in which Question No.21 is compulsory [6 × 2 = 12]16. WhatisAvogadro’sNumber?
17. Whatismeantbyprincipalquantumnumber?
18. WhynitrogenhashigherI.E.valuethanoxygen?
19. Write about the reducing property of hydrogen peroxide.
20. Mention any 2 uses of ozone.21. What are the different types of bonds?
22. Definefirstlawofthermodynamics.
23. Definelawofmassaction.
24. Definesteamdistillation.
Part - III
III. Answer Any Six Questions in which Question No.30 is compulsory [6 × 3 = 18]25. What is the mass in grams of a hydrogen chloride, HCl? 26. Writeshortnoteonsourceofelementinlivingsystem.27. Writeelectronicconfigurationsfortheelementsofatomicnumbers6and14andfromthisfind
outofwhichgroupintheperiodictableeachelementsbelongs.28. Discusesthenatureofhydridesofp-blockelements.29. MentionthenumberofcesiumandchlorideionsineachunitcellofCsCl.30. Defineanadiabaticprocess.31. Whatissecondorderreaction?Giveanexample.32. Howisteryleneprepared?33. Whatistheprincipleusedinchromatography?
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Sura’S Model QueStion PaPerS +1 Std - Chemistry 7
Part - IVIV. Answer all the questions. [5 × 5 = 25] 34. (i) HownickelisextractedbyMond’sprocess? (3) (ii) UsingtheAufbauprinciple,writetheelectronicconfigurationinthegroundstateofthe
followingatoms:Boron(Z=5)Neon(Z=10)andAluminium(Z=13). (2)(OR)
(i) ExplainthesizeofgroupCl– > Na+. (3) (ii) Whatdoyoumeanbyionizationenthalpy?Howdoesitvaryacrossaperiodanddowna
group? (2)35. (i) Howisboraxpreparedfromcolemanite? (3) (ii) Whysiliconcarbideisusedasanabrasive? (2)
(OR) (i) Ametallicelementexistsasacubiclattice.Eachedgeoftheunitcellis2.88Å.The
densityofthemetalis7.20gcm–3.Howmanyunitcellstherewillbein100gofthemetal? (3)
(ii) DiscussthepartialcovalentcharacterinioniccompoundsusingFajan’srule. (2)36. (i) WritethelimitationsofVanderwaalequationofstate. (3) (ii) Mentionanytwochemicalpropertiesofalkanes. (2)
(OR) (i) What is hydroboration? (3) (ii) Howisbenzeneispreparedcommercially? (2)37. (i) Discusstheshapesoffollowingmolecules:NH3. (3) (ii) ExplainthepolarityofcovalentbondsinH2O. (2)
(OR) Calculatetheenthalpyofcombustionofethyleneat300Katconstantpressureifitsenthalpy
ofcombustionatconstantvolumeis-1406kJmol–1.38. (i) Howisethylenehydrated? (3) (ii) ConvertingMolestoGrams: ZnI2,canbepreparedbythedirectcombinationofelements.Achemistdeterminesfrom
theamountsofelementsthat0.0654molZnI2 can be formed. (2)(OR)
Calculate thepartial pressuresofO2 and H2 in amixtureof3molesofO2 and1moleof H2 at S.T.P.
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8 Sura’S Model QueStion PaPerS +1 Std - Chemistry
11thSTD.
Time : 2½ Hours Chemistry Max. Marks : 70
sura’s Model Question PaPer - 2Based on Scheme of Examination as per G.O. (2D) No.50 dated 09-08-2017
Part - II. Answer all the questions. [15 × 1 = 15] Choose the most appropriate answer 1. Whichofthefollowingpairofspecieshavesamenumberofatomsundersimilarconditions?
(a) 1L each of SO2 and CO2 (b) 2L each of O3 and O2
(c) 1L each of NH3andCl2 (d) 1L each of NH3 and 2L of SO2
2. ................ is used as a foaming agent.
(a) slag (b) flux (c) pineoil (d) matrix3. Themaximumnumberofelectronsthatcanbeaccommodatedinthenthlevelis...............
(a) n2 (b) n+1 (c) n–1 (d) 2n2 (e) 2 + n.
4. Whichofthefollowingwillhavelowestfirstionizationenthalpy?(a) Na (b) Al (c) Mg (d) Si
5. Iftheelementcanloseanelectronreadily,theyaresaidtobe(a) electronegative (b) electropositive (c) electronative (d) electrovalent
6. Thecompoundusedinmakingmouldsforstatuesis................(a) Epsomsalt (b) Calciumsulphide (c) Plasterofparis (d) Gypsum
7. Anaesthetic used for minor operation dentistry ............... .(a) nitrous oxide (b) nitric oxide (c) nitrous oxide + oxygen (d) nitrogen dioxide
8. Inafacecentredcubiccell,anatomatthefacecentreissharedby.................(a) 4unitcell (b) 2unitcells (c) 1unitcells (d) 6unitcells
9. Thetendencyofatomshavingeightelectronsintheoutermostshellis_______rule.(a) Hund’s (b) Octet (c) Lewis (d) Kossel
10. Propertieswhichdependonlyonnumberofparticlespresentinsolutionarecalled_______.(a) Additive (b) Constitutive (c) Colligative (d) None
11. Inwhichprocess,workismaximum?(a) reversible (b) irreversible (c) exothermic (d) cyclic
12. FortheequilibriumreactionH I HI2 2 2( ) ( ) ( )g g g+ � ⇀�↽ ��(a) Kp = Kc (b) Kp > Kc (c) Kp < Kc (d) Kp=1/Kc
[ 8 ]
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Sura’S Model QueStion PaPerS +1 Std - Chemistry 9
13. mol.dm-3 sec-1istheunitof__________(a) rate (b) rateconstant (c) order (d) activemass
14. Theexistenceofwiderangeoforganiccompoundsisduetotheirpropertyof__________.a) Extensivecatenation b) Lowerboilingpointsc) Polymerisation d) Isomerism
15. Electrolysisofsodiumacetategives__________.(a) Ethane (b) Ethylene (c) Methane (d) Acetylene
Part - II
II. Answer Any Six Questions in which Question No.21 is compulsory [6 × 2 = 12]16. DefineEmpiricalFormula.
17. Whatisshapeoftheorbitalwith(i)n = 2 and l = 0 ; (ii) n = 2 and l = 1?
18. WhatpropertydidMendeleevusetoclassifyelementsinhisperiodictable?
19. Whydoberylliumhalidesfumeinair?
20. GivethevaluesofR-gasconstantincaloriesandJoules.21. Whatarecolligativeproperties?
22. Givetherelationbetween∆Uand∆H.
23. DefineLawofMassaction.
24. What are the types of paper chromatography?
Part - III
III. Answer Any Six Questions in which Question No.30 is compulsory [6 × 3 = 18]25. Howmanymoleculesarethereina3.46gsampleofhydrogenchloride,HCl?
26. Calculatetheoxidationnumberofunderlinedelementsinthefollowingspecies.MnSO4
27. Outoffluorineandchlorine,whichhasgreaterelectrongainenthalpy?
28. WhatareMillerIndices?
29. What is meant by hybridisation?
30. What are the Characteristics of free energy?
31. InIorderreactiontheinitialconcentrationofthereactantas0.05mole/litreandtherateconstant1.5 × 10-3 min-1.Whatistheinitialrateofthereaction.
32. Whatisaldolcondensation?
33. Differentiatepaperandthinlayerchromatography.
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10 Sura’S Model QueStion PaPerS +1 Std - Chemistry
Part - IVIV. Answer all the questions. [5 × 5 = 25] 34. (i) CalculatethemassofCO2thatwouldbeobtainedbycompletelydissolving10kgofpure
CaCO3inHCl. (3)
(ii) What is Zone refining? (2)(OR)
(i) DescribeAufbauprinciple. (3)
(ii) Why is Na atom bigger than the atoms of both Lithium and Magnesium? (2)
35. (i) Whydoesthefirstionizationenthalpywouldhavehigherelectrongainenthalpy? (3)
(ii) Howislithiumextractedfromitsore? (2)
(OR)
(i) What are ortho and para hydrogen? (3)
(ii) Whatarealkalineearthmetals?Whyaretheycalledso? (2)
36. (i) Writenotesonthefollowing:Acidicoxides (3)
(ii) DefineandexplaintheCrystallinesolids (2)
(OR)
(i) DiscussE2elimination. (3)
(ii) Discusstheimportantpropertiesofelectrovalentcompounds. (2)
37. (i) 10gofanorganicsubstancewhendissolvedintwolitresofwatergaveanosmoticpressureof0.59atm,at7ºC.Calculatethemolecularweightofthesubstance. (3)
(ii) Differentiateirreversibleandreversiblereactions. (2)
(OR)
(i) Describethefactorsonwhichtherateofareactiondepends.
(ii) Addition reaction. (2)
38. (i) Explainthepurificationofcompoundsbyusingthinlayerchromatography. (3)
(ii) Howisethylenehydrated? (2)
(OR)
AnorganiccompoundcontainsC,HandO.0.2475gof theorganiccompoundyieldedoncombustion 0.4950 g of CO2 and 0.2025 g of H2O. Find the percentage composition of the organic compound.
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