![Page 1: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/1.jpg)
962i1CHEMISl 'RYI'APER I1006I ' l hours
PERSIDNN GAN KEt]ANGSAAN PI ]NGE'I I] A-PENGE I'T iA
SIJKC)LAH N4ENGENGA!I C AWAN(;AN lVIT]I-AKA
PEPERII(SAAN T'I]NC}FSANAN SIJIy'II\(](JI PTRST]-IiOI-AIIAN ]\4ALAYSIA 2O()6
CHEMISTR\ ' (KrN{rA)
PAI'HR 1(KIIRT,\S I)
MIILIIPLL-CIHOI(- ' I ; ( AN I - K.\ Pl i -
on,r hour and lbrt-y-fivc lninutes (satrr .jitrn crnl.rat
r l rAN)
pLr luh l ima mini t )
InslrLrcl ioi ls to canri idates:
DO NoT oPIIN ' I 'HIS BOOI{LET IINTIL YOLI , \RL IOLD TO DO SO.l-fhere are F IFTY <iucstions in this paper. For each qucstion. fbur suggestcd ans\\ urs arc gir en
Choosc ONL. corrcct answer and indicate i t on the mult iple-choice ans\\ 'er shcc-t pror, idcd.
Rcad the inst lrrcl ions ttn the mult iple-choice answer sheet vcl. \ careiui l l .
, , \nsw'er ALL questions. Marks wil l not be deducted for nrons answefs.
[ 'his question paper consists of 12 prinled pages.O Hak Clipta PKPSI,ICN4 2006
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 2: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/2.jpg)
Fotu' suggesteLl otls\\ers laheied A,on-rhter.
2
Section A
B, C, und D are gtven for eacl.t que-stion. ('hoo,se one L:ortecl
1. Ethanerlioate ions^ C20+2- are oxidized by acirl i f ied. aqueous rrorassiulnmansanate(VII) according to the equation:
2MnOa-(aq) ; -51' : (1. , r { . iq) + 16H*1aq) ) 2} , {nr*(aq.y+ 10CO:(S) , t i l tzO(i)
\ l 'hat t ' tr lultt,: oi t).020 mol dnr-r p,rtassiunr lranganate(VIl) is required to oxiclizecompletc l l 1.() r l { l - ' rnol o1' the salr KHC2O1 I I :U:O1 '?
{ 20 crnr B Jo cnr- ' ( JU ern' D l l5 enr '
/
2. Which quantitv r 'vould best indicate tirc re latire strcnglhs of'rhc hydrogen bondbefu'cen the molccules in l iquid hydrogcn halides?
-\ ht ind dissociat i t r r r cncrSies
i3 enthalpy ciiangcs o1':;olution
C enthalpr change s of'fbrmation
.D cnthaipl ' changcs c'rf vaporization
i. .
Which of rhe follorving eserts the highest pressurc', '
\ | nrol of \ - - at 0"C in I | . l drn '
B I rnol o1'N: at 27"C, in 22.4 drn'r
( ' i molol- lL() atz7oc in I dmj
D i mol of [.a1il11 at its normal boil ing point
+. ln lvhich of thc lbllorving do the tvn,o spccies reprcscrtcd hal.e thc same shape?
A l-l l l : and PH-:
B L.O2 and SiO2
C SO.. and ( 'O1:
D PCl.r- and CHl'
A substarrcc cannot exist as a l iquid under roonr condi t ions i f
,,\ i ts crit ical pt"essure is abovc atmospheric pressure
B its critical pressurc is belorv atmospheric prcssure
C its triple poinl pressurc is above atmospheric pressure
D its triple poinl pressure is below atmospheric pressure
5
STPIV trial 2t)06 Melaka - CHENIISI RY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 3: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/3.jpg)
6. Oxygen reacts vv'ith platinum(Vl) f luorjde.ptF,; as ibllots:O:rPtFo )02'ptF5'it $'as suggested that xenon shoulcl rcact similarl l,. and in this \\,ay. the l lrst noble qas
c()mpound \\'as prodLlced.
Xe +P1Pu t Xe-PtF6-
what is the most l ikerl ' reason for thc suggestion be ing made,/.{ O and Xe have similar atomic radii
i l O ancl Xe have sirnilar electron affinit ies
C .0 and Xe havc similar clectron coniigr-rrarions
D O and Xe have similar f irst ionization encrgies
il ' Which of'the ftrl l ir" ' , ir lg statements is true f or a standarcl cell set up using the lralf-cellsbclou, l '
Ni}r NiSn: ' , "Sn
Fr- -o..t ivFt- -0. I 4v
A Electri-.ns flou, in thc eltcmal circri it tr irnt \ i to Sn
ll i{eduction occurs a1 the Ni tenninal
( ( 'oncenlrat ion of Snl (aq) rr i l l incr.c lse
l) F..m.f. of rhe cell rvii l i ircrease on increariirs corccrtration of Ni:,
8' The standard enthalpy'changesof'formation of carbon dioxidc and u,ater arc -19-1k'lmol-r and -286 kJmol-lrcspectively. If thc standard cnthalpl,change ot'combr:srion o1'prop):ne. ( i : I la. is -1938 kJmolr . rvhat is the stanclarC cnthalpj .nun!" of forn.rat ion of (_3II1?
9' l 'he reaction betrvecn R and S rvas stLrdied using 3 mol dm 3 solution gl'R anrl -i moldm i solution of-S' From the graph belou'. deterrnine the equil ibrium constant. l i ,. of'rhcrcacl ion :
R (g) + 25 (g) {-' } ' l (g)
[Sl / mol dm-:]4
Timc/min
A r 1258 k. l rnol-r
C t 184 kimol
C
li8 rnol :c i rn6
l /4 mol-r dm6
B - 184 kJmol I
D - 6ti i9 kJmol I
il 1i2 mol'2 clm6
D I mol-2 clmt'
S IP\'l trial 2006 \,lelaka - CHIIMISTRY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 4: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/4.jpg)
96}lt :1
10. The solubil it,v product of calcium fluoricle in *'ater at 20'c is 3'2 x l0-rr mol: dm ' '
Caiculate the soluLril i t l ,oi.ot.iutt f luoricle in 0'2 rrlol dln-r sodiurn f ' luoride solution'
A l . t l r l ' - i nrol drn i R 2.0 t l0I m,t l dm'
C8.0x10" 'moldm]D3'2x10- ' lmcl lc lm-r
I t. A samplc ol I rnol o['ethanoic acic] is diluted at constant temperatttrc- to a voltrtrc of V'
Which diagram shou's lhe con'cct cl"range of pl1 agairrst V')
pl{-tnHl. >t"-i
tLi-r nH
i
-----------> v
11. At 300K, the ratc constant ftrr a reaction i 'r 8 78 s
l l .9s : . f hc act i i ar ic ' r t c l lcrg) of th i t rcact i ' 'n is
( gas constanl . R - 8.- l l ' lK 'nrol ' " ' \mhentt ts cqt lat lon
stornach ?
A lH l - lHAl> [ \ " ]( u lAl> t l l - l - IAI
A 54.1 kJmol
C -5, t r .1 kJmol I
A 16.09
C 7.25g
B i l r ' l t lA I t ' lHAl
D IH l - IA l> [ l iAl
B
I)
B 8.009
D 6.259
' . .\t I10K, the rate constirnt is , '
k- \er 'Rl ;
74.1 kJmol l
-74.1 k imol '
l4.At95.t- , thevapourpressureol 'nater isS' l .5kPaandthevapourpresst t reotbronobenzcne'Crt l - . tsr is15.5kPa.t ]a lcuiatethenlaSSofwalerrequiredtosteamdist i l l10.0 g of bromobenz.ene r'vhen the atmospheric pressure is 100'0 kPa'
(r .a.m of : C, 12 : l l ' l : Br ' 80 ; O' 16)
|2.stomachjuicehasapHoi l .0 'Aspir in isamc. 'nol . ,asicacidrepresentedb-vFtA(K.-iO o *ot dm-r) ivhich dissociatcs into ions of tl- and A
Whataretherelat tvec'onccntrat ionrof l l "A'andl{Ar ihen lspir in l iomatabletenterst l re
Sl PM trial 2006 \'lcLaka - Cl'lE\'IlS'fRY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 5: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/5.jpg)
96211 5
15. A l iquid mixture P and Q has the b.p-cornposit ion diagram as shor'vn belou
b.p
o o'2 rnole fractiJn
I U l'
\\rhich o1'the follou'ing is true of the l iquid trrixture above ?
A ' i 'hc solution shous positive deviation {iom Raoult 's lau' '
ts lJpon ruixing cf P and Q. volurne slightlf incrcases'
C When sol ' - r t ion y is f ract ional ly 'd ist i l led. the dist i l latc is pure P.
D Vapour pressure of pure Q is higher than that of ptrre P'
1 6. Wh ich prgpelt\, of the first six elemcnts oi Period 3 (sodi;um to sulphtrr) continuousl}'
increarcs rrumerical l l ?
\ , \ - tomic radius
ii l j irst ionisatirrn energ)
(. \ larimum oxidation number in oride
D lvlelting point
1l . Which of the fbllowing sets of phy'sical propcrlies is that of an element in Group 2 of'
the Pcr iodic lablc ' l
!r,!elf ury poilt i oC Den,ritl' .,' gcnt3 Eler'lrical Conductit:in' ' tthnitm'l
A 98 A.97 2'4 x 107
B l l - i 2.07 5 '0x10-r( '
C 649 1'74 22x 107
I) 1741 I 1.30 6 '0 x 107
lg. l 'hc chlor ide of an element X is a l iquid uhich has a bor l ing point of 76' ' ( l and l i rmes
i* air After mixing 0.010 mol of the chloride u'ith watcr, the re sulting solution require d 100
cm3 of 0.30 rnoidm 3 silver nitrate for complete precipitation of the chloride ion'
In xhich group in the Periodic'fable is element X l ikely to be located?
A Group I
( l 'Group 15
STP\'I rriai 2006 \4elaka - CHEN{ISTRY I
B Group 13
D Group 17
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 6: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/6.jpg)
96211
1o. AlCl: rcacts with l, iAlLL and (Cllr):N to give (Cll lr)-lNAII{3. Which of the lollou,ingstatemenls is true about (CH3)rNAlI{3?
A t'he Al aiom is tetrahedrallv coordinated
ts 'fhe Al atom is electron deficient
C It is optically active
D It contains hydrogctt bonding
20. Solder is an allol of t in and lead. A sample of solder is heatcd in an crccss of oxygen
ancl is then allorved to cool at room temperahtre. 'l'he residue rvill contain
A Sn and ['bO
B SnO and PbO:
tl SnCl, anil PbO
D SnOz and PbOl
21. Which of thc fcrl lor.ving does not involve the lonc irair of clccrons on the tri ir.rgcit atotl
ot' the amrnonil l mr-rlecti lel '
A Thc formation ot'NIl.1- ions in aqueous anttttt. ' tt ia
1l ' i 'he dissolving of silver chloride in aqtteous at.t.ttttonia
C the lormation of NI{" ions during the rcaction crl 'atnmonia lvith sodium
D 'lhe hl'drogen bonding that occurs trcfivcen mr:lecttles o1'ammonia
22. Which of the lbllor ing statemcnts explains thc obscrvation that magnesium hydroxide
dissolvc:; in aqueous anmonium chloride, but not in aqueous sodium chloride'l
A ' l ire anrrnonium ion acts as an acicl
ts Arnmoniunr chloride dissociates less full l ' than sodium chloridc
C fhe arnmonium ion changes the solubil it l product of magnesium h1'droxidc
D Ammonium hy,clroxide is first lbmed. and then acts through a corlrrotl ion cffect
23. Which of the follorving con.rpounds reacts nith chlorinc under specif-tc condition to give
trvo products in rvhich chlorine has dil lerent oxidation nntnbers'l
i i Sulphuric acicl
C Potassium iodide
Il Sodium h-vclroxide
D Potassium iodate(V)
B Sodium carbonate
D Sodium ethanoatc
l-4. Which of the follorving compounds wouid give coloured lumes on warming rvith
concelltrated sulphuric acid?
i\ Sodir.rm bromide
C Sodium chlor ide
Sl-Pl\'l trial 2006 N4claka - CHFI\{ISTR\' 1
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 7: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/7.jpg)
9b2/ l
2-5. ' l 'he table below shows the possible oxidation states of f ive d-block elements in thePeriodic Tablc. The elenrents are represenlcd by letters which are not their symbols.
Possible oxidation numbers
Which of thc follon,ing ions is likely to exisr'.)
A \\io:"
B XO+r-
C \O4,D
ZO.:O
26. l,etters u'rittcit ()n papcr using arlucoLrs untntonium thiocYanatc are inr.isible unti lturned blood-reci bi brushing thc paper u,ith aqueous iron(ll l) chloridc. If t irc: amm6niumthiocvanale is frrst rnade alkaline, the letters arc br()\\n ancl less clear.Which of the iolioning sttbstances, wlien lbrmed on the paper in these reactions. bcsierplains thcse crbse rvations?
\\ ' i th aqLreous With alkaline aquei-)LlslLnrnroriium thiocl,anate ammoniunr thiocvanate
r. I c- \ l l : conlplex
i j Fe-S[ \ - complex
( ' I rc-SC\ cornplcx
l) l :c-SC\ complex
Fe(OIJ)r
Fe-NH3 compler
fc(Oi{)r
Fe-OI I- cornplcr
?1 . ' l hc .t ltrLrr of ci 'namon oil is due to cinnantaldchycle. ClqHr(). \\.hat is thehvbrii l isatiorr t-,f eacli carbon atom in cinnamalcjch_vde ? Ilou,many o bonds arrtl hon, marrv nbonds does cinnarnaldchvde have?
-CH-ClI-CHO structurcofcinamaldehvdc
hvbridisation
sp2qn
on
7
5
5
5
6
1aIL
12
r8
l8
qn' - t '
){n-
A
t-t
( '
l )
STPN,I trial 200(r lvlclaka - CTHEMIS I Ry l
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 8: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/8.jpg)
962t1
25. The rable below shows the possible oxiclation statcs of f ive d-block eiements in the
Perioclic Table. The elements are represented bl letters ivhich are nottheir svrnbols.
\ \ h ich o{ ' thc lb l lowing iotrs is l ikely to exist /
\ \\'or-B XO.rr-
c \01
D 1022"
16. Lettcrs $,rittctl on papr-r using aqLrcoLr\ anMrL)niLIm thiocl'anate are invisiblc unti l
tLrrned bloocl-r 'cd by brushing the papef ri ' i t l t aqueous iron(ll l) chloridc. I{ ' t ire ammoirium
thiocl'anate is f lrst madc alkaline, the lettcrs afc br()\\u and less clear.
\\ 'hich ol-the folloiving substances. when lbrnteci r)n the paper in these rsacti(l l ls, bcst
explains thcse observati ons'.)
\\ ' i lh aqrreous Wilh aikaline sqLte!)Lis
alnnlonitlm thiocl anate atnmonitttrl thiocr attate
A Fc-NI[ : complex Fc(OI I ) :
lJ Fe-SCN complcx Fe-NH3 complex
t Fe -SCN cornple\ Fc(OI l ) r
l) |c-SCN complex Fe-OH- conrpler
?1 . l 'he odour of cinnamon oil is due to cinnamaldchyde, Cstlxo. What is the
hl ,hr ic l isar ionofeachcarbonatomincinnamaldcl t -vde?I lou'man) 'o l rondsandhon' t .nat t r n
bonds does cinnamaldehyde have?
f.)\-."-cFr-cHO\",/
tl
( '
h_rbridisation o
spr 12
structure of cinamaldehYde
I
5
5
5
I2
l8
IB
sp
sp1
qn-
S]'PN'l trial 2006 Nlelaka - C HE\llSl ltY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 9: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/9.jpg)
C CH:( ' I I (OH)CO:]I C'l l rCHr( ' f lBrCH.
29. which of the fbilou'i 'g order of'nitration. alki,. lation and brominariongive the best.vield tbr the s1,'nthesis of 2-bromo-4-nltromethylbenzcns-. f iom
A alkylation. nitralion, brominatiolr
B alk1.' lation. bromination. nitration(l nitration. alki, lation. bromination
D nitratiorr, brorl ination. alkl, lation
962i1
28. Which of the follorving
A Cll:=CIJ-CHO
(. CH-C.C]IJ,-OI i
r\ c.,
O cHCrcHr
P(.H:CH:C'l
ct{rcHCtl
ci t rcHrcl
ct t2clct ] 12ci
is a chiral compound and is also soluble in lvater,.)
llHo (n\ Rr
\v/
c'.1'
is expcctedbcnzene?
30 .When aclucous potassium hYdroxicle scllution rs added separalely lo compounds lr ancltl and^then rellured: l iquids y ancl l iquid Z arc procluce,l ,espcctively,. t_iquld y does ncrrgive effervescence rvith sodium rnetal. while 0. i rnol of-l iquicl Z prodLrccs2 21 d;i; i
' '
hvdrogen gas under standard.tcmperature and pressure. \\ 'hat are the possible structurallbrmulae for P and Q? ( l rnol of gas occr-rpies a 'o lLrme.f 22.- i dm, at s. t .p.)
a\
Dt-,
C
D
acHrctclr
ctHzc]cl,t:cl
cH2ctrcl{2cl
cltrcucl2
31 A compound Q has thc following composition acoording tc) irassi carbitn 61.3%.nydroged 7'l0lo; ox.vgert28.6'k..Q reduces Fehling-s solution to copperil) oriclc. 0.1 mol ereacts completeil 'r i , i th 4480 crn3 o1-hydrogcn gas (rneasurcd at s.t.p.) in the prcsence ofnickel as catall 'sr. ( 1 mol of gas t-rccupier a r,,Jumi of 22.4 an,, ot'r. i.t iCornpound Q possibly is ?
B CH3T]H:CH-CFI-CH-CIIO
D CI l2:CH-CH-CH_Ct{._Coor I
) ,:, \\1hich of the {bllotving statements is nol true abttur
Cellulose: is a poly'mer of glucose
Glucose can reduce F'ehling's solution and l.ollens
Glucose reacts lvith 2,4-dinitrophenylhydrazine to
Glucosc molecule has a ketone group
glucc,se'l
' rcagent
forrn a yellorv precipitate.
B
C
I)
STPl\'{ trial 2006 lvclaka ^ CI]EN.{lSTRY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 10: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/10.jpg)
962i I
33. 4-meth1'lpentan-2-one' MIBK' is a solvent trsed in glue
(CHI):CHCII;COCI{: ]\{IBK
\\ lhenthcglueistestccl . lvhichi l f thefol l t l r r , ingresul tcouldbe<Juetothepresenceol .MII]K']
Al tg ivcsareddishbror ' r 'nprecipi tateonboi i ing\ \ ' i thFchl ing'ssolut ion
Blt isoxidisedandgivesagrcel lcolourat iot- tonr,ratmingwithalkal incaqt le()us
Polassiurn dichromate(lV)
C It gives a ycllolv precipitate on i larmiug u'ith alkaline aqueolrs iodine
l) lt gives a srveet-srnell ing l iquid on u'anrtins n'ith benzoic acid
] . i . \Vhichoneoi ' the|ol lo i r ingprocedurcsuorr lc ig ivcthchighest l ie ldofeth- ' ' let l rat toatc.CH3COOC2Il '. startlrt"g t:t"t t ' ft^""ic acirl ' ( ' l i 'COOtt' and elhanol" Cl:H:Oll ' l
A Reacting CI lrC'OOH u ith SOCI:' then adding C:ll5OH'
R Reactins (-:1 l 'OI i u' ith SOCI:' then aciding CII3COOH'
C Re{lr ix inc a t r i r lure of cf l ;cooH anci ( ' l l 'cH:OII \ \ i th NaOH'
I) Retluring C:t1:OH rl ith concentratecl l l :S0 r' rhen aclding Cl l lcO()H'
35. J-he reaction scheme bclorv shor'vs a feu rcacticrns olsalt S
S (*hitc solicl) hcaredwithdilute sulplrurl ' ir ' i 'J r (lumcs qith pungent sniell)
i hcated 'vith
tt ctxcenuatecl H:SO+
Li (gas that bttrns lvith blue flame)
\\ 'hat could S be?
A CH;C]OONAD Na2ClOl
B HCOONa C Na'C:Or
36. A digital t 'atch needs a l iquid.crystal that
(i) is stablc towar<is acidic hydrollsis.
i i i l is stable lorvards alkaline hvdro[1'sis' and
( i i i ) l ta ' uhirul carbon ccl t t ru-
\\ ihich of the fbllorvrng compoullds fulf i ls the above conditions?
rTrA .r.cr r:crrr( H;)o(c)-cooQlq2;t H'
B cu.cH:cH2o @ coo-@@ cx
c crH,[email protected],tH(cH3)2
r) cH,cil,cll(6n,;cH:@@t*t'
STPM trial 1006 N4elaka - C}{F\4ISTRY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 11: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/11.jpg)
962i1
37. \\ 'hich of lhe following rvould fbrm
A CTHsOH
( ct i l rco2t{
10
an aqueous solut ion with the highest pl l?
B f l2HrNHl
r) ut-r( e) !rH\-,/
38. "Phcnacetin" is used as an ancsthetic. it is prepared from cornpound X and raagcnt Yaccording to the equation bclow:
c:H,-ot9-\rrr - Y c. l t . - ( ) {9rNHCocHl
X Phenacelin
Which of these could be reagcnt Y ?
A ( . l t jco( l l B Col lsClOCl
C (-l[ irCOCH3 D CH3CONII2
i9. GAIIA is a neuro-transmittcr relcascd b1 red aicae u'hich encouragcs shellf ish lr:rr.rc i.
sct t lc tx the ocean bed. ' lhe st fuoturc of GAl l ' \ is l1^\C'11:( . l l :CI I :COOH. In r ihal nar
docs Ci,\8.,\ diff i:r l i ttm amino acids obtained b) ltrdrolrsi-s of protein'?
, \ l i , loe: nol fbnn a zrv i t ter ion
R It is not soluble in rvater
'(l l t is not a 2-aminocarbory l ic acid
l) lt does not form a polydrnide linkage
,10. \Vhich of the follor.ving formulae reprcsents a condensation pollner' l
A CH2-C-C]H-CI-I: ''--ICI i r
-OClf l2CI I2Cl I I :OCOCI l:CFI:Lll I:CO
-c't I:-cH-c'l 12-cH
CII; CN
CHrI
_cIL-C-t -CO0CHzCHI
STP\{ trial 2006 lllelala - CHLNIIS IRY I
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 12: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/12.jpg)
96)i1 l l
Section B
For each o/ the questions in fhis section, one or more o.f tlte three tnunbered stalements 1 tr-' 3 ntal' oe
L'orrect. fhe reiponses A to D should bc sclet:tetl as follotts
only 1 iis correct i
only 1 ond 2qre correcl
only2ond3 j 1,2ond3 isre correcl i ore correcl
l
conslallt teniperature fi 'rrm 15 alnl to 60 atm'
\ \ h ie h t ,1 ' thc lb l lorr ing s latcmort . is are
41. Gaseous particlc X has proton number n and a charge of t l '
Claseous particie Y has protoir nurnber n+1 .nd is isclelectronic *it i l \
which of the lbllori ing statcn.ients correctl;-. dcscribes X and Y l
1 X has a larger radir-is tlian Y ,
1 X rcquires morc enet'g)'than Y lvhen a furthei electron is removed frotn eacli particle
3 X rcleases lnorc energy than Y lvhen att clcctrtrn is added t0 each particle
42. \\Ihett a sarnple ol'a gas is comprcssed al
its r,olutuc cltange s l iom 76.0 cm' to 20 'r crn' '
possible cxpianation(s) of this behaviour?
I ' l 'hc gas behaves non-ideall.v
2 The gas dimerisc's
3 l-he gas is adsorbed on the vessel r'valls
+3. The rate cquation for the reaction : A - 28 is given as
I{ate'- k[A]
which of the follorvings islare lruc for the reaction shown above 'J
I when concentration of A is increased. reaction rate increases'
2 Ata constanl tempcrature, half life of this reaction is a constant '.
3 When tcmperature increases' half l i fe of the rcaction dccreases'
41. Forthe lb l lon, ing rcact ion. 2A(g) + B(s) -r
c(g; . 3 l )1g) AH' -ve
Which of thc lbllou,ing rvil l cause theiquil ibrium position to slri l i to the right ?
I decrcasing volume of the sYstcm
2 decreasing tcmperature of the system
3 adding inert gas to thc system at constant pressurc
StP\'l trial 2006 N'lelaka - C.HE\llSTRY i
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.
![Page 13: (KrN{rA) · Choosc ONL. corrcct answer and indicate it on the multiple-choice ans\\'er shcc-t pror,idcd. Rcad the instlrrclions ttn the multiple-choice answer sheet vcl.\ careiuill](https://reader031.vdocuments.pub/reader031/viewer/2022012001/6084bd20bfe78e779c44f615/html5/thumbnails/13.jpg)
45. Anhydrous barium nitrate ancl anhydrous nragnesium nitrate both decomposc onheating, evolving nitrogen dioxide and tt.xygen and fonning an oxide.Which of the fbllorving staten.rents concerning these decompositions is/are correct?
I Nitrogen dioxide is evolved at a lorve r telnperature frorn magnesium nitrate thanfrom barium nitratc.
2 For both nitratcs ihc volume of nitrogen diox-ide evolvcd is fbur l imes greater thanthe rolurnc of tlr"""gen.
3 ' l 'he numcrical valus o1-ths lattice energ.v of magnesiunt nitrate is grcaterthan thatof barium nitrate.
46. The Group l4 elernenl germanium is u'idely used in the manufircture ofsemioonductols and other electronic corlponents. ' l 'he existence of this element in Group l4betrveen sil iqon and tin rvas predicted b1 i\ landeleev sorne vcars lrcft,re it r ias discovered.I 'rorn its positi(rn in the group, nhat prot:eli ies of germ;rnitt in tnli. lrc prcdictccl?
I Its most stablc oxidc has the tbrniti l l i ( iei-):.
2 Thc . ' r idc ( ie0: { i , t rn. i , , t l 1 aU . '
3 l 'he bondirrg in GeL-l+ is covaleni
47 Which of thc lolioll ing are pollutanls if lcl,:,rscri into thc atmospl.rere?
1 Nitrogen dioxidc
2 Sulrrhur dioxide
3 Aerosol particles containing lead(li) oxide
48. 10.009 of an acic l R was dissolvcd in 1 dm-r of l iater, 25.00 cm' t '1 ' the rcsul t ing solut ion
required 23.10 crn 'of h.v-droxic lc ion solut ion of 1.50 g per, l rn ' tor compictc neLrtral isat ior . r .Which of the frri lorvirrg could bc the molecular fomrula of R ':
i Cl l ;CI l r ( O() l l 2 (CI{:)4(COO}r): j cHr(( tJ:)6c(x)ll
49. Cornpound Z reacts rvith hot alkaline aqueous iodine soluticrn ttr producc iodolbrn ancla sodium salt, sodiuni 2-rncthylpropanoatc. (Clli):C tl('OO\a . \\Jhat coLrid Z be'l
I (Cl ' l r ) : -CH-CO-CIHr
2 (Ctl:):-ClH-CH(oH)-CrH:
3 C13-CO-CH-(CH:):
50. Whcn 1.2-dichloroethane is ref'lured rvith aqueous sodium h,vdroxide scilution.compound X is fonncd. Cornpountl X rcacts rvith cornpound Y to producc a polymer. Ycould be
1 Hoocr.ocoo}j
STPM triil 2006 N'telaka - ('FlEiltlSTRY I
2 C.lOC:(Clh)aCtOCl : Ho.@oH
TheMind's Q'Bank - A non-profit community initiative by TheMind Association www.themindassociation.org
TheMind's Q'Bank Note - The Intellectual Property of the question set lies with its original copyright owner.Use the document as a complete set and do not ammend any pages.