qb
TEST CODE
FOX{M TP 2017050
0121201,0
MAY/JT'NE 2017
CARIBBEAN EXAMINATIONS COUNCIL
CARIBBE,AN SECONDARY EDUCATION
CERTIFICATE@
EXAMINATION
CHEMISTRY
paper 0l _ Geneial proficiency
t
hour 15 minutes
09 JUNE 2017 (p.m.)
READ THE FOLLOWING INSTRUCTIONS
CAREFULLY.
1' This test consists of 60 items. You will have t hour and r 5
minutes to answer them.
2. I, addition to trris test bookret, you should rrave an answer
sheet.
3
4'
lTl]o'::,'ri:"".lii;::::lT'ofJliHffi:l'.tllliffit::l:.*o
(A), (B), (c),
(D)
Read each irem you
on your allswel'sheet, find the number which
conesponds-to your itern and shade
the satne letter as the answer
voiiluu. chosen- ro5[ ni trre sarnpre ite,r berow. the space having
Sarnple Item
The SI unit of length is the
(A)
(B)
(C)
(D)
5'
6
'
7.
8.
9'
metre
newton
Sample Ansrvel
ffi@@ @
second
kilogr.an-r
The best answer to this item is ,,n1etre,,
, so (A) has been shadecl.
If you want to cltange your allswel e'ase it
cornpletely befor.e you
whe,
flll in your new
yoLI are tolcl. to
choice.
begi,, turn the
ur,l wo,k as quickly and as careftilly
as yo, can. If you
cannot answel' an itettt, go or1 to the !T:
neit one. yori niay r.eturn to that itern
later.
You ruaSi do any r.ough wor.k in this
booklet.
Irigur-es are not necessarily ch.awn
to scale.
You rnay use a silent, rl.rl-pfogrammable
carculator.to answer items.
DO NOT TURN THIS PAGE UNTIL
Y OU ARE TOLD TO DO
..ia
Copyright O 2015 Caribbean Exan.rinations
Council
All rights reseruecl.
SO.
-2Wrich of the following
processes provide
evidence of the particulate nature of matter?
1
4.
An atom has 20 electrons. When it ionizes,
it has the same electronic configuration as
II.
Diffusion
Filtration
(A)
(B)
m
Osmosis
(c)
(A)
(B)
I and II only
I and III only
II and III only
I, II and III
I.
(D)
(c)
(D)
5.
'
neon
argon
sodium
calcium
Which of the following elements does
NOT fonn simple ions by gaining or losing
electrons?
Itern 2 refers to the following table which
gives the melting points and boilingpoints
of the clilorides of four elements.
(A)
(B)
(c)
(D)
Element
Melting Point
of
Chloride (K)
I
m
463
248
973
t693
IV
193
333
Ii
2
.,
Boiling Point
of
Chloride (K)
453
348
Wliicli ofthe elements fouus a chloride that
is ionic in natnre?
(A)
(B)
I
u
(c)
III
(D)
IV
Wliich of the following elements has 7
electlons in its outer shell?
(A)
(B)
(c)
(D)
Hydrogen
Oxygen
Nitrogen
Chlorine
Calbon
Copper
Calcium
Chlorine
it
,.',il
:...11
:.il
'.!l
'I
il
lt.
-3-
ll
u
il
fl
lt
6.
Some calcium carbonate was reacted with
excess dilute hydrochlor.ic acid. The volume
il
,'|l
7
ofcarbon dioxide evolvedwas recorded and
plotted againsttime. Which ofthe following
graphs represents
ii
,l
the
il
il
ii
(A)
il
Which ofthe following represents a balanced
equation for the reaction between aqueous
silvernihate and aqueous sodium chloride?
reaction?
(A)
*
E
o
il
(B)
N
1l
1!
Q
il
I
AgNor(ad + 2NaCt(aq)
AgClr(s)
ii
+
---'
NarNOr(ag)
6J
(C)
I
:l
o
rl
ii
(l
.il
i
.I
(D)
Time (min)
i
(B)
ii
AgrNO,(aQ) + NaCl(aq) ..+
AgrCl(s) + NaNOr(aQ)
AgNO,(aq) + NaCl(aq) -.+
AgCl(s) +NaNO,(aq)
(J
:i
at
:r
,.
Ag(I.iOr)r(aq) + 2NaCl(aq)
AgClr(s) + 2NaNOr(ag)
i
U
i
C)
8
o
:
;
:
Time (min)
(c)
Which of the following acids will
NOT
form an acid salt?
(A)
(B)
H2CO3
(c)
I{2S04
(D)
cH3co2H
H3P04
tr
q
d
o
9
U
o
o
Sodium reacts with water according
to the
equation
2Na(s) + 2Hro(/) --* 2NaOH(aq)
+ HzG).
o
(!
-o
H
Time (min)
(Molar volume of gas = 24
lihes at rtp)
The number of litres of hydrogen
(at rtp)
liberated when 0.1 rnole of
,"diil,;;;I;
with excess water is
(D)
()
N
o
U
o
o
o
Gl
F<
Time (min)
(A)
(B)
2.4
(c)
12.0
(D)
24.0
1.2
4
10
Which of the following oxides may show
both acidic and basic proPerties?
\4.
In which of the following substances will
elecffolysis NOT occur when an electrical
current is passed through it?
(A)
Iron(II) oxide
(B)
Sodiurn oxide
(A)
(c)
Calciurn oxide
Aluminium oxide
(B)
(D)
(c)
(D)
II
Amixture of copper(il) oxide and
copper(Il) sulfate is BEST separated by
15.
'
Sodium hydroxide solution
Molten sodium chloride
Solid sodium chloride
Dilute sulfuric acid
Which of the following are physical
properties of ionic substances?
(A)
(B)
heating the mixture and condensing
(c)
shaking with excess water and then
(D)
filtering
shaking with excess water followed
by fractional distillation
distilling the mixture
I.
il.
m.
High melting points
Soluble in organic solvents
Good conductors of electricity in
the liquid state
(A)
I and II only
I and III only
II and III only
I, II and III
(B)
12.
(A)
(B)
Silicon
(c)
Uranium
Altuninium
(D)
13.
(c)
Which of the following elements exhibits
allotropy?
(A)
(B)
(C)
(D)
16.
Carbon
Which ofthe following statements
of an endothermic reaction?
(D)
is
(A)
(B)
(C)
(D)
TRUE
Heat is given up to the
sumoundings.
Fleat is absorbed from the
surroundings.
The products have less energy
than the reactants.
The products have the same
energy as the reactants.
Which of the following substances, when
added to pure water', SIGNIFICANTLY
increases the water's conductivity?
17
ilr
.r..'1
Copper(Il) hydroxide
Sodium chloride
A separating funnel can be used to separate
a mixture of
(A)
(B)
(c)
(D)
j
Graphite
Iron(II) hydroxide
water and ethanol
water and kerosene
water and solid sodium chloride
kerosene and solid sodium chloride
it
ll
lt
-5-
ll
il
lr
Itemp 18-19 refer to the following terms.
ti
il
li
(A)
(B)
(C)
(D)
il
ll
I
22.
Ionic crystals
Simple molecular
Macromolecular
Metallic
following procedures should be employed
in order to increase the rate ofthe reactiln?
I
In answering Items 18-19, each term may
llrl
II.
be used once, more than once or not at all.
tl
A piece of metal is reacted with an acid
to produce hydrogen gas. Which of the
iII.
il
iI
ii
18
Whicli of the above tenns describes the
(A)
Increasing the temperature atwhich
the reaction is carried out
Subdividing the lump of metal
Reducing the concenffation of the
acid
ii
(c)
ti
I and II only
I and III only
II and III only
(D)
I, II and
ii
structure of sodium chloride?
t9
ii
(B)
Which of the above terms describes the
III
strucfure of copper?
23
ii
20
ii
,t
ii
il
ii
ii
li
The pH of fresh sugar cane juice, which
is
usually 5.0-5.5, can be changed to 7.5_g.0
for more efflcient processing by adding
(A)
(B)
ii
(c)
il
(D)
ii
(A)
(B)
(c)
acetic (ethanoic) acid, CHTCOTH
sodium cliloride, NaCl
slaked lime, Ca(OH),
limestone, CaCO,
The atomic number of au element
is defined
as the number of
(D)
24.
ii
elech'ons
plotons
protons and neuh.ons
electrons and neutrons
Which of the following halogens
is a liquid
at room temperafure?
,l
2t
rl
,i
Wliich TWO of the following statements
(A)
(B)
(C)
(D)
describe acid salts?
ii
I
rl
li
II
III
IV.
Their anions cannot dissociate to
give hydrogen ions.
They form a normal salt when all
replaceable hydrogen ofthe acid
is lemoved.
Their anions can dissociate to give
hydrogen ions.
They are not capable of generating
a
(A)
(B)
(c)
(D)
nomal salt.
I and III
I and IV
II and IiI
III and IV
25
Bromine
Fluorine
Chlorine
Iodine
Which of the following statements
is TRUE
for the equation below?
Mg(s) + H2SO4(aq)
(A)
(B)
(c)
(D)
*
MgSOu(ad + H,1gy
Hydrogen is oxidized from 0 to +l
Hydrogen is reduced from +2
to 0.
Mg is oxidized fiorn 0 to +2.
Mg is reduced fi.om +2 to 0.
'"-ffifl
Gr) NT{ Tr\
.NLIE
\TTfV- 6
-6The element that is used to determine the
relative atomic mass of other elements is
26
(A)
(B)
(c)
Carbon-10
Carbon-12
Carbon-13
(D)
Carilon-14
30
Which of the following diagrams illustrates
the course of an exothermic reaction?
(A)
bo
q)
Reactants
H
Items 27-28 refer to the following table
showing various tests for gases.
Products
Reaction path
Test
(A) Danrp blue
litmus paper
(B)
Darnp red
litmus paper
Observation
(B)
Damp blue
litmus tums red
Damp red
Iitmus tums
blue
(c) Glowing splint
Splint relights
(D) Lit splint
Splint
extinguishes
with a pop
bo
Products
q)
rd
Reactants
Reaction path
(c)
In answering Iterns 27--28, each option may
be used orlce, rrore than once or not at all.
Reactants
27
Which test can be used to identifu an acidic
Products
Reaction path
gas?
(D)
28.
Which test can be used to identify ammonia
gas?
Reactants
Products
o!
29
Which of the following does NOT take
place during electrolysis?
(A)
(B)
(c)
(D)
Oxidation occurs at the anode.
Anions rnove towards the cathode.
Cations move towards the cathode.
Inert elech'odes do not react with
the product
a
r<
q)
frl
Reaction path
-7 -
31.
An atom with atomic structure
l],f, contains
(A)
(B)
(c)
14 protons, 13 neutrons
13 protons, 27 neutrons
13 protons, 14 neutrons
(D)
27 protons, 13 neuhons
Item 32 refers to the following graph
which shows the boiling points of some
straight-chain arcohors.
Boiling
points (oC)
250
200
1s0
100
50
72
34
56
7
Number of carbon atoms in chain
32
33
Which of the following molecular
formulae represents the alcohol
whose boiling point is l g0
"C?
(A)
cH3(CHr)3oH
(B)
cH3(CHr)4oH
(c)
cH3(cHr)soH
(D)
cH3(ClI2)6oI{
To, which homologous series
does the
rollowlng strucnlre belong?
HH
_l_
"_l-i
(A)
(B)
(c)
(D)
nIlIan
89
rn /r ^^r-
,l
{\o-,
Carboxylic acids
Alkanes
Alkenes
Alcohols
34.
Which of the following is the
name of the
compound CH3CHTCHTCHTOH?
(A)
(B)
(c)
(D)
1-propanol
4-propanol
4-butanol
1-butanol
a
GO r1NI Tr\.NTTN \Yr\,-
-8Item 40 refers to the following equation'
Items 35-36 refer to the following
conversions of ethanol.
(A)
(B)
(C)
(D)
RCOOH(aq) +NaOH(aq)
cH;cHrOH
CH3CH2OH
--+ CH,CHO
* C#,
40.
CH;CHroH -+ 2Cor* 3Hro
describes the equation above?
(A)
(B)
(c)
ganate(VII)A(MnOo?
(A)
(B)
Items 37-38 refer to the following equation'
Organic Acid + Alcohol
$
Ester
The forwarci reactiott is known
(A)
(B)
(c)
(D)
*
An organic substance, when reacted with
bromine water, decolourizes it immediately'
The substance is MOST likelY an
Which of the conversions above requires
rnan
Water.
as
42.
synthesis
hydrolysis
esteriflcation
polyrnerization
(c)
alcohol
alkane
alkene
(D)
ester
Glucose is converted to starch or cellulose
by
(A)
(B)
(c)
(D)
38.
The reverse reaction is known
(A)
(B)
(c)
(D)
39.
Decornposition
Neutralization
Precipitation
Reduction
Which of the conversions above correctly
represents the dehydration of ethanol?
41.
31
+Ito(f
Wrich of the following processes correctly
(D)
36
RCOONa(aq)
CI{3CH2OFI -+ CI{TCOOH
In answering Items 35-36, each
conversion may be used once, more than
once or not at all.
35
+
synthesis
hydrolysis
esterification
polymerization
43.
Cornpounds in a homologous series
(A)
exist in the same state
(B)
possess the same molecular
(c)
differ successively by a - CH, group
(D)
large alkane rnolecules into
smaller alkene anct alkane
molecules
(B)
(c)
(D)
large alkane molecules into
srnaller alkane and hydrogen
molecules
complex sugar molecules into
sirnple sugar molecules
large polymer molecules into
polymer molecules
.,r.
"'u"tt
oxidation and reduction
addition polymerization
condensation polyrnerization
as
'Cracking'is the process ofbreaking down
(A)
dehydrogenation
possess only carbon
chains
in
formula
straight
-944
Ethene reacts with hydrogen, chlorine and
hydlogen chloride. These reactions are all
examples of
(A)
(B)
(C)
(D)
48.
(A)
(B)
(C)
(D)
addition
substitution
condensation
polymerization
49.
4s.
Which of the following substances is NOT
polymer?
a
(A)
(B)
Nylon
(c)
Fructose
(D)
Cellulose
Soapless detergents are
all biodegradable
inorganic materials
not affected by hard water
A solution, when treated with sulfur dioxide
gas, becomes green. The solution
contains
potassium
(A)
(B)
Protein
made from fats
(c)
(D)
nitrate
sulfate
dichromate(VI)
manganate(VII)
.i
l
!
i
i
46.
:
Which ofthe following methocls is used for
the extraction of aluminium?
(A)
Pl
(C)
(D)
50.
(A)
@)
(Cl
(D)
Electrolysis of its rnolten oxide
Elecrrolysis of its aqueous chloride
Iieduction of its oxide rri"e.;i."
Reductionofitsoxideusingiarbon
monoxide
51.
47
Whicli of the following statements about
sulfur are true?
I.
It is usecl in the vulcanization of
iI
It is used in the exh.action of iron
m.
(A)
(B)
(c)
(D)
calcium oxide
calcium chloride
anhydrous copper sulfate
concentrated sulfuric acid
When
copper(Il) carbonate is heated alone
in
a dry test fube, a gas is evolved
and a Utact<
residue is formed. This gas is expected
to
(A)
(B)
rubber.
(c)
hrm red litmus blue
lelight a glowing splint
decolourize acidified aqueous
potassium rnanganate(Vlf
fi'om iron ore.
It'is used in the manufacture of
explosives.
i and II only
I and III only
II and III only
I, II and IiI
A suitable drying agent for the laboratory
preparation of amrnonia gas is
(D)
^
form
a white precipitate with
aqueolrs calcium hydroxide
52.
An element that is
(A)
(B)
(c)
(D)
a nonmetal
is a solid at room temperature
can act as a reducing agent
fonns an acidic oxide
conducts ete,Jtricity
ffix
flf.\
/1\r
'Fr,r TryF
a'F*h
-1053
Which of the following observations is
Iikely when EXCESS aqueous ammonia
57.
rain'are
is added to a solution of copper(Il) sulfate
and the mixture is shaken?
(A)
(B)
(c)
Green solution
Green precipitate
Deep blue solution
(D)
Light blue precipitate
(A)
(B)
(c)
(D)
58.
AI
(c)
Fe
(D)
Na
chlorofluorocarbons
lead compounds in exhaust fumes
carbondioxide and carbon monoxide
sulfur dioxide and sulfur trioxide
Which of the following observations is
expected when aqueous silver nihate is
added to aqueous potassium chloride?
Items 54-55 refer to the following metals.
(A)
(B)
The main substances responsible for 'acid
(A)
(B)
(C)
(D)
Cu
Apungent gas is evolved.
A blue precipitate appearc.
A white precipitate appears.
A brown precipitate appears.
In answering Items 54-55, aparticular metal
may be used once, more than once or not
at all.
54.
59
Which metal appears between copper and
aluminium in the reactivity series and is an
important component in haemoglobin?
(A)
(B)
Which metal reacts vigorously with water
to produce a sh'ongly alkaline solution?
(c)
(D)
55.
Which metal has an alioy which is used in
the manufacture of aitcraft?
60
50.
Wrich of the following reactions
likely to occur?
(A)
(B)
is
Iron
Zinc
Magnesium
Which of the following gases will give a
positive test with dry cobalt chloride paper?
LEAST
Mg(s) + Zn(NO,)r(aq) -+
Mg(btO,)r(aq) + Zn(s)
Cu(s) + ZAgNOT(aq)
Lead
(A)
o2
(B)
H2
(c)
CO,
HrO
(D)
-+
Cu(Nor)r(aq) + 2Ag(s)
(c)
Fe(s) + cuQ.IO,)r(aO -+
Fe(NO,)r(aq) + Cu(s)
(D)
Pb(s) + Fe(NO,)r(aq) -+
PbQ.IOr)r(aq) + Fe(s)
END OF TEST
IF YOU FINISH BEFORE TIME IS CALLED, CHECK YOUR WORK ON THIS TEST.