SKEMA SN PRA PMR KEL 2009

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  • 8/7/2019 SKEMA SN PRA PMR KEL 2009

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    PERCUBAANPENILAIAN MENENGAHRENDAH 2OO9

    SKEMA PEMARKAHANSCIENCE(PAPtrR2)s512

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  • 8/7/2019 SKEMA SN PRA PMR KEL 2009

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    No. ahswer

    R : Protectsthe flower during th_Lross-poil lnatlon

    (i) P(ii)r/ I ) ^ ^ ^ - - - r

    ffilti

    Q: OvuleR: Sepal

    MarkI a2

    b Ic 1d I52 a IIb \rrsrr4u5trtraunprO(rucrnasa,)ollrerentbotlrngpoint.(i ) Darkercolour(ii) More viscous(iii) Less(abilityto) burns(iv) (Produce)moresoot

    (Brtumenis usedfor) coveringroadsurface.(i ) boiling(ii) evaporation(i )(ii) u / v/ condensationi freezing/ iubrimation/ ' \ r(1,1 suDllmatlon(ii)_ _iodine / dry ice / naphthalene

    foial

    Thedischargeof an unfertiliAn ovum i -- -

    ( i ) Day 15(i i ) Dav30

    Ic 2

    d I63 a IIb IIc II64 a Iibc Id Ie 1I6

    SKEMA PEMARKAII{NscrENCEPAPER2(sst2)

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  • 8/7/2019 SKEMA SN PRA PMR KEL 2009

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    J A A reactionbetweenan acidand alkali to form salt andwater 1b Acid + Alkali -) Salt+ Water Ic SoluSoluion K : Hydrochloricacid // Sulphuricacid // Nitric acidion L : SodiumhvdroxidellPotassiumhvdroxide// Ammoniumhydroxide

    1Id (( )i) GreenAcidic solution IIe ((

    ((*

    ) A dilute alkali is usedto reducepaincausedby insectbitei) Alkali in toothpastehelpsto neutralisethe acid aroundour teethii ) Slakelime (Calciumhydroxide)is usedto neutraliseacidicsoilv) Milk of magnesia(antacid)is usedto neutralisedthe excessacid in thestomachChooseanvfwo suitableanswers

    2

    Total 86 a ,ffift l WHearrbc,,:ksllit{_'r rltrlt I Ill La1 1 |CupboardR

    Flr rHAlll tr"=r'=*i|1 |l l i l ffiHear1'botrksll F=r+t'] I____ll['ll-_LryCupboardS

    ffirfr| ''illil i--n|t In ,16+.411|---li: *ry

    CupboardT* the 'X' must be located at the top, middle andJpwel part of cupboard S, R and Tresoectivelv.

    aJ

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    (Cupboard)T(It hasthe) lowestcentreof gravityT --+ s --+R(i)(ii) (It) spreadsout its legsThe stabilityis increasedby increasingthebasearea(whenthe giraffespreadsout its legs) Totalw-XYZhasnetworkvein leaf ltap root / fruit / tubers/ flowerhasparallelvein leaf lfibrous root / fruits / suckerhasnetworkvein leaf ltap root / fruits / hasrunnerhasnarallelvein leaf lfibrous / flower

    Suggestedanswers:e.s : Answer1 Hasparallelvein leafHasnetworkvein leafCommoncharacteristics

    BananaplantWaterhvacinthPotatoeplantStrawberrvplantName of plantse.q : Answer2 HasfibrousrootHastap root

    PotatoeplantStrawberryplantCommoncharacteristics BananaplantWaterhvacinthNameof plants

    e.g : Answer3 Without fruitWith fruitCommoncharacteristicsWaterhyacinthPotatoeplantStrawberryplantBanananlant

    Nameof plants

    e.g: Answer4 Without flowerWith flowerCommoncharacteristics StrawberryplantBananaplantWaterhyacinthPotatoeplantNameof plants

    * Acceptanysuitableanswers.TotaI

    Manipulatedvariable: Thevalueof resistanceRespondingvariable Thevalueof current/AmmeterreadingFixedvariable Numberof dry cells/ Voltage

    Resistance(Q) 1 2 5 r0Ammeterreading(A) 0.9 0 .7 0 .5 0.3

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    c

    a'1()k-{r )

    (C))

    oa

    At least3 pointsA smoothgraph

    plottedcorrectlyl ine- lm

    lm

    2

    d (i) The currentdependson the value of resistance(ii) IndirectlyproportionalllThebrightnessof the bulb decreases// the bulb becomesdimmerwhen theresistanceincreasesI

    e 0.37+ 0.01A If Currentis the ammeterreading/ readingof the ammeter ITotal T2

    BNDOF MARKING SCHEME

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