I.
E.
A.
IEA/4 A
IEA/4 B
BOOKLET
SCIENCE
4
BOOKLEIr 4
SCIENCE
lEA/4A
lEA/4B
This test contains questions dealing with different branches of
Science. Some you will know about from your school work, some from
your general knowledge and others you will be able to answer by using
commonsense. Other s you may not be able to do. Do not wastetime over
questions you oannot do; leave them and go on to the next question. You
can come back to questions you have missed later, if you have time. You
may answer even if you are not quite sure, but do not guess blindly.
Each of the questions or unfinished statements in this test is
followed by five suggested answers, lettered A,B,C,D, and E. You have
to dec ide which one answer you think best and then on your answer card
make a solid pencil mark in the oval containing the correct answer letter.
Here is an example of how to fill in the answer on your answer card.
Remember that the examples given on this page are to be answered in the
section marked L on your answer card.
l.
How long does the earth take to travel once around the sun?
A.
B.
C.
D.
E.
A day.
A week.
A month.
A year.
None of the above.
Since the earth travels round the sun in a year, the answer space D
should be marked. This has been done on the answer card for the question l
in the example section L.
Now try these three questions for pra'ctice. Fill in the space of
your chosen answer on the answer card in seotion L.
2.
Water would be turned into ice by
A.
B.
C.
D.
E.
3.
heating it.
stirring it quickly.
putting salt in it.
pouring it into a shallow dish.
cooling it.
Which day of the year in the southern hemisphere has the longest
period of daylight?
A.
B.
C.
D.
E.
21st
21st
22nd
23rd
22nd
January.
March.
December.
September.
June.
Sometimes you may be asked to pick out the one wrong answer or the
one that does B2! fit in with the others.
4.
Which of the following does NOT belong to the same group as the others?
A.
B.
C.
D.
Eagle.
Lion.
Mouse.
Elephant.
E.
Deer.
DO NOT TURN OVER UNTll YOU ARE TOlD TO DO SO.
SECTION
IEA/4 A
A
-
Ab out. how ;L.o!1g
1.
A.
B.
C.
D.
E.
2.
w.ou~d__
~~ .
.~
..
tak e a rocket sl!ip to _rE!8ch the moon?
Two hours.
Severa1 hours.
A few days.
A 1ight-year.
Severa1 years.
Which of the fo11owing statements is true about seeda?
A.
B.
C.
D.
E.
3.
All plants produce seeda.
All fruits contain a 1arge number of seeds.
A11 :seeds are good to eat.
Every seed contains a · young p1ant,stored food and a
seed coat.
The food stored in seeda is a1ways in the coty1edon.
Which of these substances is found in
e~e~~
living cell?
~.,-.r- - "
A.
B.
C.
D.
E.
4.
Protein.
Ch1orophy11.
Ce11u1ose.
Starch.
Haemog1obin.
-.
Whi1e Joe was sitting under a tree, he watched a bird getting
insects from between the cracks of the bark. Which drawing shows
the kind of beak this bird had?
8
C
~
-;.~~
J)
4A
3
One of the fo110wing lists of small invertebrate animals oontains
on1y inseots. Whioh one is it?
A.
~.
C.
D.
E.
6.
Whioh of the fo110wing organs is
A.
B.
C.
D.
E.
7.
~.
C.
D.
E.
Liver.
Kidney.
Stomaoh.
Bladder.
Heart.
Most peop1e do not like it.
Va1uab1e mineral salts are lost on reheating.
It is uneoonomio to heat food twioe.
~aoteria will multiply quickly Gn the warmed up meat.
Reheating oauses a reduotion 1n protein oontent.
Tissue from a oow is shown on analysis to oontain protein, a
small &mount of fat, some iron, and large quantities of
vitamins A and D. Whioh part of the body did it oome from?
A.
B.
C.
D.
E.
9.
!Q! situated in the abdomen?
The se1Vjng of reheated meat in restaurants is often d:isoduraged am EDIl&.times pt'O}:d;l)itEd byla" Wbioh of the fo11ow:1ng is the ma m res son for this?
A.
8.
Housef1ies, Spiders, Mosquitoes, Wood1ioe.
M111ipedes, ~utterf1ies, Housef1ies, Mosquitoes.
~utterf1ies, Ants, Cookroaohes, Houseflies.
Cookroaohes, Butterf1ies, Spiders, Mosquitoes.
Ants, Moths, Beet1es, Centipedes.
Musoles.
Kidney .
Liver.
Heart.
Brain.
Whioh of the following experimental prooedures would serTe best to
determine the effeotiveness of inooulating ohildren against
measles?
A.
B.
C.
D.
E.
Take 50 ohildren who have never had measles and expose
them to the disease and then inooulate all of them.
Inoou1ate 25 of 50 ohi1dren who have never had meas1es
and then expose ' all 50 of them to the disease.
Inooulate 50 ohildren who have not had measles and then
expose all of them to the disease.
Take a rand om sample of 50 ohildren, inooulate 25 of the m
and the n expose all 50 of them to the disease.
Take a random sample of 50 ohildren, inoou1ate all of them
and t~en expose 25 ~f the m to the disease.
4
4A
10.
Wh,is it that your body temperature doas not fall even though
you lose heat oontinually?
A.
~.
C.
D.
E.
11.
The blood distributes heat round the body.
Respiration results in , t~e liberation of heat.
Heat is oonstantlybeing absorbed from the sun.
Hot meals are eaten regularly.
Warm olothes are good insulators.
John put some se eds on moist cotton wool in a dish.
Jane put some seeds of the same kind ' inta a glass
full of water by the si'de Qf his.
Af ter two
days John's seeds sprouted but nothing seemed to happen to
Jane's. Whioh of the following is the most probable explanation?
A.
Jane'~
C.
D.
E.
Jane
Jane
Jane
Jane
~.
12.
seeds had been kept dry for too long.
did not allov her seeds enough air.
did not put the glass in a varm enough plaoe.
should have used a different kind of seed.
did not use any ootton vool.
When aloohol is burned in air, water is formed. Another produot of
the oombustion is a gas vhioh tums lime water oloudy. Consider the
following three statements with re gard to these two faots
Statements.
I.
Carbon is a oonstituent element of aloohol • .
II. Hydrogen is a oonstituent element ' of aloohol.
III. Oxygen is a oonstituent element" of aloohol.
Whioh statement or oombination of thäse statements oan be
deduoed 'tfom the t". facts given? -
A.
~.
C.
D.
E.
13.
I and II.
If II and III.
I and III.
II and III.
Ionly.
When 2 g of zino and 1 g of sulphur are heated together,praotioally
no zino or sulphur remains af ter the oompound zino sulphide is formed.
What happens if 2 g zino are heated with 2 g of sulphur?
A.
~.
'O.
D.
E.
Zino sulphide oontaining approximately twice as muoh sulphur
is formed.
Approximately 1 g of sulphur will be left over.
Approx1mately 1 g of zino will be left over.
Approximately 1 g of each will be left over.
No reaotion will ooour.
4A
5
14.
Heating a mixtur e of powdered iron and sulphur will result in
the formation of
A.
B.
C.
D.
E.
15.
A clear solution of substance X is added to a clear
solution of substance Y.
No colour change i ·s observed.
Which of the follewing would preT14e avidenoe that in spit~
of De change . in colour a chemical reaction had taken place?
A.
B.
c.
D.
E.
16.
a single element.
two other elements.
a solution.
an alloy.
a oompound.
Any product is soluble in water.
The solutions of X and Y can be mixed in all
proportions and still give the same result.
There is a rise of temperature when the two
solutions are mixe d .
The final liquid is shown to be neutral by using
an indicator.
The e~periment gives the same result when different
concentrations of the two soluti ons are used.
Whioh of the following is the correct arrangement of apparatus for
preparing a gas produoed by the aotion of a liquid on a solid?
A
c
B
D
E.
4A
6
Which of the following methods would you employ in order
to obtain copper from oopper oxide? You may find that
your knowledge of the activity series will help you.
11.
A.
B.
C.
D.
E.
18.
Heat
Pass
cold
Pass
Heat
Pass
oopper oxide with silver.
hydrogen through oopper oxide suspended in
water.
hydrogen over hot copper oxide.
copper oxide with dilute hydrochloric acid.
steam over hot copper oxide.
We can explain ohemioal ohanges in terms or
sharing or
A.
B.
C.
D.
E.
th~
gein or loss or
eleotrons furthest from the nuoleus of the atom.
eleotrons clas est to the nucleus of the
eleotrons rrom the nuoleus of the atom.
protons from the nuoleus or the atom.
neutrons from the nuoleus of the atom.
a'••.
Items 19 and 20 rerer to the following table.
Substance
19.
Eleotrioal
Conductivity
P
Good when solid
or liquid
Q
Boiling
Point
Effect of Heating
in Air
91°C
889°C
Burns to form a single
oxide which forms an alkaline solution in water.
Nonconduotor
113°C
444°C
Burns to form a single
oxid e whioh forms an
aoidic solution in water.
R
Nonoonductor
5°C
80 0 C
s
Nonconductor
when solid,
good conductor
when molten
800°C
1413 C
0
Burns to form carbon
dioxide and water.
Melts; no new substance
formed.
Which substance could be a metallic element?
A.
B.
C.
D.
E.
20.
Melting
Point
Substance P.
Substance Q.
Substance R.
Substance S.
None of these.
Whioh substance would not change in weight when heated in air?
A.
B.
C.
D.
E.
Substance P.
Substance Q.
Substance R.
Substance S.
None of these.
7
4A
21.
Mary and Jane eaoh bought the same kind of rubber ball. Mary
said, "My ball bounoes better than yours." Jane replied, "I'd
like to see you prove that." What should Mary do?
A.
B.
C.
D.
E.
22.
Drop both balls from the same height and notlo~' vhioh
bounoes higher.
Throw both balls against a wall and see how far eaoh
ball bounoes off the wall.
Dropthe two balls from different heights and notice which
bounoes higher.
Throv the balls down against the floor and see how
high they bounoe.
Feel the balls by hand to find whioh is the barder.
The measuring oylinder oontains a oertaUn volume of water. The
enlarged figure shows a view of the surfa oe of the vater as
seen from the side. What is the volume of the water, '
I
A. 50 cm~
B. 49 cm~
c. 48 cm~
D. 47 cm 3
E. 46 cm 3
- .- - _.
23.
It is said .that, dressed in the same way, a man would b• . El.bl,to jump higher on the Moon than on the Earth. Whioh of the
followlng is the best explanation of this?
A.
B.
C.
D.
E.
His mass is less when he is on the Moon.
The force of gravity is less on the Moon than
on the Earth.
His distance from the Earth is greater when he
is on the Moon .
There is no air on the Moon to offer resistance.
Newton's Laws of Motion do not apply on the Moon.
24.
What happens to the balloon when the air in the bottIe is
extracted by a vacuum pump?
Vacuum
Pump
_ A.
B.
C.
D.
E.
25.
Rubber
Stopper
It increases in voluma.
It does not change in volume.
It decreases in volume.
It decreases in volume at first
but then increases.
It is sucked into its tube.
4\----+- Balloon
The diagrams show rings being pulled by different forces
in the same plane. Which ring is in equilibrium under the
action of the given forces ?
2N
5N
3U
3N
3N
~N~
3N
5N
3N
E
.5N
3N
4A .
9.
Usingothe apparatu8 shewn in the figure below, 100g of water
at 20 C wae poured into the Guter container P and its temperature
read at int8rvals from theomometer 2. At the same time 100g of
water at 80 C was poured into the inner oontainer Q and its
temperature read at intervala from thermometer 1. Which ot the
following graphs best representa the changes in the temperatures
of the water in the two containers •
26.
....
"
et
A
·TI"IE
80
" .... .....
....
r
....
/'
------...
7'i+ lO ~ '-lO ,.,[(;~ P.
~:--
. - - - - --
/'
1
THtf{MCI lo' t. Tt R '_ :-:~ .
B
//
~
-;::==t.
r-" 1-,.
Il
r-
~TI""[
.-
...
.....
flo
---_.._._~
~OT
- - - - -------1--- ---:- - --~
'filITER
.-
&,
I
",,
,,
D
"
"
.kl ~-------_-.._~-~-",-=-=-.;=-=
~
"-
"
te
lo
"
.....
-------
~
~
------
_ .,
.-
-
[
---.__ .
----
1
10
4A
Under whieh of the __following eondi tians does water evaporate fastest?
A.
a hot and dry' day.
:B.
a hot and moist dayC. (
oold and dry' da;r.
D.
a oold and moiat day.
E. .On a ealm and moist day.
On
On
on.a
-on
28.
The crews of two ships at sea can communicate with each other
by shouting through loudhailers. It is impossible for the
erews of spaceships a eimilar distance apart in spaee to do
this because
A.
:B.
C.
D.
E.
29.
the temperature ia too lov.
the aound is refleoted. "
the pre s sure is too high inside the spaoe· ehtLp.
the sound barrier has been broken.
there is no air.
Jane yas trytng to find out Yhioh things she oould piok up
with a magnet. With whioh one of the following would ah.
IOT suooeed?
-
A.
B.
C.
D.
E.
30.
A magmatice-ompass needle.
A steel serey.
An iron nail.
A seYing needle.
A brass paper fastener.
!he folloYing diagram shoYB a lighting oircuit in a ear.
,--------4/1- ----11f----~
~t
P,~TTelN
F
Fuse F would most probably be made of
A.
:B.
C.
D.
E.
thin wire with low melting point.
thiek yire withl~w melting point.
thiek yire with high melttng point.
thin wire with high melting point.
the same wire as the eonneeting leads.
4A
11
Questions 31 and 32 refer to the following diagram which shows
an arrangement of apparatus which can be used to show that an
animal gives out carbon dioxide in respiration.
~=====-
---""
AIR 1b
PUMP
2
3
4
l contains a substance which removes carbon dioxide from air,
2 and 4 both oontain a liquid which changes in appearanoe when
carbon dioxide passes through it.
31.
Of the following kinds of containers for the animal which
one would give the quickest result?
A.
B.
c.
D.
E.
32.
small container.
large container.
container in bright light.
oontainer covered with a dark cloth.
container in which the air is kept moist
by me ans of .... et cotton wool.
A
A
A
A
A
If air leaked into chamber 3, which one of the following effects
would be seen?
A.
B.
c.
D.
E.
The liquid in 4 would change more rapidly.
The rate of bubbling in 2 would slow down or stop.
The rate of bubbling in 4 would slow down or stop.
Liquid would pass from 4 into 3.
The liquid in 2 would change more rapidly.
12
4A
33.
A small sample of a mixture of liquids with different boiling
points is to be separated into its components by distillation.
Which of the following sets of apparatus is most suitable for
carryin~ this out and for determining the temperature at which
each of the components of the mixture boiled?
nll::RMO 1'1 ETE"R
B.
A,
t--
M'",TUltE
~
1
---#--- DI 5TI u.An;
~
1'4 IXTuRE
i
HEAT
HE.AT
#r---THE.1t Mo METER
.u
TUEQ.MO~ETE R _ _ _ _
1).
c.
DISTlL.LA.TE
.L
....-t----ltE.!WA.TE.R
l
HEAT
~---+--!)ISnLL.j1,Te
MI~T\JRE.
41\
13
34. Which of the fol1owing pieces of glassware is main1y for
conden8ing gases to 1iquids?
c
B
A
D
E
Th ermome ter
~
35.
-
-.- _0·
-
-
-
-
-
-
-
-
~
~
-
Solid
-
+
Heat
In order to decide whether a substance is pure the apparatus
illus trated ab ove is used to find its melting point. The
melt ing point of the pure substance is known. Which one of
the following is the most important in ehoosing the oil to use?
A.
B.
C.
D.
E.
The oil should be colourless.
The oil should boil at the same temperature as the
melting point of the pure solid.
The oil should b oil at least ten degrees
higher than the melting point of the solid.
The oil should bo il at a temperature at
least ten degrees lower than the melting
point of the solid.
The oi1 should have a high density.
14
4A
36.
It is unwise to condgnse the vapour of a liquid with a
boiling point of 240 C in a glass water-cooled condenser because
A.
B.
C.
D.
E.
the vapour might react with the water,
the vapour will not be condensed,
the condenser will probably crack,
the water will boil,
solid will form and block the condenser.
15
411.
37.
A number of different solutions have to be tested to find
out whether or not they will each conduct electricity and,
if so, what products are liberated.
Using the circuit shown below, which of following pieces
of apparatus would be most suitable when connected between
points X and Y?
(All the beakers and tubes are made of glass, the electrodes
of carbon, and solutions are shown shaded.)
Milliammeter
Circuit
X
y
A
X
X
c
X~S~
E
x
y
16
4A
38.
Orle end of a well-insulated copper bar is heat ed and the other
kept cold, as shown in the figure. The temperature at different
points on the bar can be read by thermometers dipping into small
holes at P, Q, R and S. The distances between P and Q is 1.0 cm.
and the drawing is to scale.
c..OLO
STEAM
l
~
WATE!'
/
/
/~ // /
P G
R
///// Al
1
~
j
// / / / / / // // / /,/;/
"-
~.
I-AliiIi.U~(\
( Heat
In sulatin~
Katerial)
The temperature f a lls uniformlyalong the bar, and it is required
to find the temperature gradient, or fall in temperature for unit
length.
The two thermometers to be read for this purpose should be those
placed at
A.
B.
C.
D.
E.
39.
P
P
P
Q
R
and
and
and
and
and
Q
R
S
S
S
Aspirit level is placed on the top of a table and viewed from
above when it appears as shown in the diagram. Which of the
points P,Q,R and S should be raised as a first step towards
making t he t abl e level?
A.
B.
Q
C.
R
D.
E.
S
Any one of the above
p
P
s
ICP I
,/
4A
17
40.
A meter has a pointer P which moves over a strip mirror MM'
and a scale SS '. When photographed at an angle, the meter
appears as shown, where R is the reflection of the pointer
in the mirror.
1:Vhat is the correct meter reading?
A.
B.
c.
D.
E.
Between 6 and 1 uni ts.
1 units.
Between 1 and 8 units.
8 units.
Between 8 and 9 units.
o
s
/
END
DO
NOT
TURN
OVER
OF
UNTll
SECTlON
YOU
ARE
A
TOlD
TO
DO
SO
IEA/4 B
SECTlON
1.
The sun is the only body
in our solar system that gives off
large amounts of light and heat. We see the moon because it is
A.
B.
c.
D.
E.
2.
reflecting light from the sun.
~ithout an atmosphere.
a star.
the biggest object in the solar system.
nearer the earth than the sune
In an experiment green leaves were put in a jar and the apparatus
was kept in the dark. Lime water was turned cloudy by the gas
that formed in the jar. Which of the following gives the best
explanation of this result?
A.
B.
c.
D.
E.
3.
B
°2 was produced by photosynthesis.
°2 was produced by respiration.
CO was produced by respiration.
2
02 was used up in respiration.
CO 2 was produced by photosynthesis.
John brought the skull of an animal to school. His teacher
said she did not know what the animal was but she was sure that
it was one that preyed on other animals for its food. Which
clue, do you think,led her to this conclusion?
A.
B.
C.
D.
E.
The eye sookets faced 's ideways.
The skull was much longer than it was wide.
There was a projecting ridge along the top of the skull.
Four of the teeth were long and pointed.
The jaws could work sideways as well as up and down.
4D
4.
Tom wanted to learn which of three types of soil- clay, sand
or loam- would be best for growinG beans. He found three
flowerpots, put a different type of soil in each pot, and
!,lIan ted the same number of beans in each, as shown in the
drawinf,. He placed them side by side on the window sill and
';Q.ve each pot the same amount of '!Tater.
\
..
;"
r- L ~ if\ 1:"
:.
(- i---'
t_ - .J j
!
:r~';
.,,1
(. 1
.~ \f ,;
.
G
"'f.
.
,
I
L /
LOAM
'7hjr was Tom' s experiment NOT a good one for his purpose?
A.
The plants in one pot got more sunlight than the
plants in the other pots.
The amount of soil in each pot was not the same.
One pot should have been placed in the dark.
Tom should have used different amounts of water.
The plants would ~et too hot on the window sill.
B.
C.
D.
E.
5.
The drawing represents a plant cell. In which of the four
regions marked might chloroylasts be found?
l '
-;-x...lL . _.
KL ' -----T+~\
A.
B.
C.
D.
-:-"'1
,c,.
In
In
In
In
In
anl y
only
1': only
N anly
both K and L
f"
-,
L
N
4B
6.
The energy for photosynthesis is ~enerally obtained from
A.
B.
C.
D.
E.
7.
ohlorophyll.
ohloroplasts.
sunlight.
oarbohydrates.
oarbon dioxide.
The diagram below shows an example of interdependenoe among
aquatio organisms. During the day the organisms either use
up or give off
or ® as shown by the arrows. Choose
the right answer for
and ® from the alternatives given.
®
®
SMALL WI\TE~ AIi/MALS
-/------+____
R,DoTED
Wl\fER
f'LAHf
A.
B.
C.
D.
E.
8.
is
is
is
is
is
oxygen and b is oarbon dioxide.
oxygen and b is oarbohydrate.
nitrogen and b is carbon diaxide.
oarbon dioxide and b is oxygen.
carbon dioxide and b is carbohydrate.
What does an active muscle. that is, a muscle which is doing
work, give up to the blood?
A.
B.
C.
D.
E.
9.
a
a
a
a
a
Carbon dioxide.
njfy gen ~
Nitrogen.
Vitamin B.
Glucose.
The Andes are high mountains in South America and their
inhabitants live and work at high altitudes. These people
have almost twice as many red corpuscles in their blood as
do the people living in the valleys. Which one of the following is the best explanation of this~
A.
B.
C.
In the Andes there is less air pressure acting on the inhabitants' blootl vessels and so new red corpuscles can be produced more quickly.
Because the re is a smaller amount of oxygen in the air of
the Andes the in.habi tants breathe mO l'e deeply in order to
increase the total amount of oxyg en in their lungs.
In the Andes there is less o~Jgen entering the lungs of the
inhabitants so that an increase in the number of red corpuscles enables a larg ~ ' proportion of this oxygen to be absorbed.
D.
Inhabitants of the Andes need more red corpuscles to transport
E.
oxygen through the blood ves sels because there is less oxygen
in the air they breathe.
The lower air pressure in the Andes causes blood to circulate
more quickly throughthe blood vessels and so more red corpuscles are needed to transport the oxygen.
3
4
4B
10.
All of the following are aspects of the reproductive process.
Which one of them must occur before we can be certain that
fertilisation has taken place?
A.
B.
c.
D.
E.
11.
Paint applied to an iron surface prevents the iron from
rusting by
A.
B.
C.
D.
E.
12.
preventing nitrogen from coming in contact with the iron.
reacting chemically with the iron.
preventing carbon dioxide from coming in contact with
the iron.
making ~he sur~ace ef the iron smoother
preventing oxygen and moisture from coming in contact
with the iron.
FIour is a fine powder obtained by g rinding wheat or other
cereal grains . ii. pile of g rain burns only very slowIy whereas
flour dust suspended in air is explosive. Which of the
following is the best explanation of this ?
A.
B.
C.
D.
E,
13.
A male organism must find a mate.
Reproductive organs must be produced.
The nucleus of a male gamete must fuse with that
of a female gamete.
A spermatozoon must reach an egg cell.
A female gamete must provide a store of food for the
embryo.
The heat produced when small particles burn is greater
than the heat p ro duced by the burning of large particles
of the same substance.
Grinding the grain changes its chemi cal compositian .
For the same quant ity of the material, small part icl es
have agreater surface area in contact with air than
large particl es .
Small particles possess more energy than larg e particles .
The flour burns completely whereas the pile of grain does
not .
Two given elements combine to form apoisonous compound. Which
of the following conclusions about the properties of these two
elements can be drawn from this information?
A.
B.
C.
D.
E.
Both elements are certainly poisonous.
At least one element is certainly poisonous.
One element is poisonous, the other is not.
Neither element is poisonous.
Neither element need be poisonous.
5
4B
14.
A test tube ooated with iron filings on the inside was olamped
vertioally in a beaker of water. Water gradually rose a
short distanoe in the test tube as shown in the sketoh.
IRoN FIL.INIlS
Of the following, the best explanation of t his is that
A.
B.
C.
D.
E.
15.
The presence of ions in a given water solution is most
directly detected by
A.
B.
C.
D.
E.
16.
finding out if the solution conducts electricity.
measuring the deoaity of the solution and comparing it
with those of the pure solute and water.
finding out if the solution has an electric charge.
evaporating the solution and testing the residue for
conductivity.
adding an ionic e ubstance and seeing if there is a
reaction.
Which one of the followine elements forms an oxid e which
turns red litmus' paper blue when added to water?
A.
B.
C.
D.
E.
11.
water c ondenses inside the tube.
the iron gives off a gas which dissolves in the water.
the rust which replaces the iron takes up less space than
the iron.
the iron reacts with oxygen from the air inside the tube.
oxygen from inside the tube dissolves in the water.
Phosphorus.
Carbon.
Iron
Sulphur.
Calcium.
In which of the following cases will heat be g enera ted'?
12.
3.
4.
5.
V/ hen
When
When
When
When
A.
B.
C.
D.
E.
sodium hydroxide dissolves in water.
water is decomposed.
ic e thaws.
water evaporates.
concentrated sulphuric acid dissolves in water.
and 2.
1 and
5.
3 and 4.
3, 4 and 5.
2, 3, 4 and 5.
6
4B
19.
You fin~ w.hat a.ppear . to b~ salt .. (JQdiUDl ohloride)
.
4eposits. In order to leam what the depo,1ts are, whioh of
the following items of information would be most valu.ble?
A.
B.
C.
D.
E.
Peroentage of sodium ohloride in the sample.
Peroentage of magnesium ohloride iD the sample.
Specifio gravity of the sample.
Chemical oomposition of the sample.
Solubility in water of the sample.
Which is the most suitable apparatus from those shown below
for oolleoting pure oxygen ~as by a student in a school laboratory?
... -
c
A.
20.
Which ene ef the fellewing substances does
(!tf carben atoms?
A.
D1amend.
:B.
C.
Graphi te.
D.
E.
21.
~
eonsist mainly
Seet.
Ruby.
Charcoal.
An iron oontainer ia evaouated and weighed.
with
h~droge~
Then it 1s filled
gas and weighed again.
~_1__\__\____\________'J)
The weight of the container full of hydrogen oompared to the
weight of the evacuated container is
A.
B.
C.
D.
E.
less.
greater.
the same.
greater or less depending on the volume of the gas
in the container.
greater or less depending on the temp'~rature of the
gas in the container.
4B
7
22.
Ann was playing with a bubble pipe.
When the bubble was the
aize of the one in the pioture, she took the pipe out of ;her
mouth. What do you think happened to the bubble af ter that?
A.
».
c.
D.
E.
23.
It
It
It
It
It
got larger for a time and then stayed at this size.
got smaller for a time and the n stayed at this size.
go~ sa&ller and smaller and disappeared into the pipe.
stayed on the pipe without getting larger or smaller.
beoame larger and lar~er until it burst.
The objects P, Q and R of weight 15N, 20 N and 7 N, are
hung with a light thread as shown i n t he f igure.
/ / ./
/
/
15N
· 20N
R
7N
What is the tension between P and Q?
A.
B.
c.
D.
E.
42 N
35 N
27 N ·
15 N
7 N
A uniform rod, pivoted at its oentre, is soted on by two {oroes
in the same plane. In whioh 0&8e is there a turning effeot?
25.
The advantage of using a lever such as that shown in the
diagram to raise a weight W instead of lifting it directly
is that
w
A.
B.
C.
D.
E.
less energy is required.
it is quicker.
less foroe 1S needed.
less movement is required.
less work has to be done.
9
4]3
26.
Some boys made a set of ohimes by cutt1ng four pieces of pipe
of different lengths from a long metal pipe and hanging thea
as shown in thepicture below. Which of the pipes gavä-tlie
lowest note when theystruck it with a hammer?
(y)
~
~
f"
F
~
....
'-
....
Pipe (X). ....
Pipe ("y).
All gave the same note.
You cannot tell without trying.
It depends on where you hit it.
A.
:B.
c.
D.
E.
27.
F.ur balls, P, Q, R and S shown to scale in the figures,
are made of different materials, but have the same weight.
..
®
., - , \'
~
. "'I'
Q
,
@
R
@
S
p
Which ene of the following statements about their densities
is true?
A.
B.
c.
D.
E.
28.
They all have the same denSity.
You cannet know anything about their densities.
Which one has the highest density depends on how the
volumes are measured.
P has the highest deasity.
R has the highest density.
A metal tray feels colder to touch than its plastic handle.
This is because
A.
:B.
C.
D.
E.
metal always has a lower temperature than plastio.
metal radiates much more heat than plastic and so
cools more quickly.
metal conducts the heat away from your hand better
than plastic.
plastic is a better heat conductor than metal.
a smooth surface allows a closer contact than a
rough one.
10
4B
x, y and
Z repreaent three lampa in a c1rcu1t, wh1ch alao
inoludes a battery and a switoh S.
X fails to light while Y and Z do.
circuIts Is It?
When the switoh is open
Which ona of the following
~--~~~------------~
A.
D.
30.
E.
The figure shows a box with four termlnals, P, Q, R and S.
The follow~ng observatlons were made.
1.
2.
3.
There ls a oertain &mount of reslstanoe between P and Q.
Resistance between P and R ls twlce that between P and Q.
There ls not &ny appreclable reslstanoe between Q and S.
Whlch of the followlng oircuits is most likely to be within
the bOx, assuming the reslstances shown to be equal?
01
1:I
f-" '- -- -- - , -I
I P
f{
l",
Si
I
I1_ _ _ _ _, _ vVNiNH"!
I
_
_
• .l
~.
-- - l
f- -- -
: ~=r
---- ~I
I
I
Q
S I
1vVNH; I
o
' __ ._ . -
-
-
-
__ I
,
-
I
I
I
'-_
_
_
o
-
__
•
•_
o-"""":C
p
Q.
~-(
S
._
-- - -- -- -- I
-
- _ ,
IO_=r~1
JI
I
'u I
_ _ _ ..J
I p
R ,
I
I
I
,
S
Gi.
O
,___ - ---
-
J)
I
() ,
11
4B
Questions 31, 32, 33 and 34 refer to the followin g di agram:
011• .l!IloP
APP " ilAT U S
AS FutST
SET' liP
ApPAft~TU5
A~TE~
5 MU'turu
Animal s take in oxygen and give out carbon-dioxide.
air c onta ins very little carbon-dioxide .
31.
Which of the foll owing i s meaaured with this apparatus?
A.
B.
C.
D.
E.
32.
The
The
The
The
The
rate of movement of the animal.
amount of heat produced by the animal.
rate of respiration of the animal.
effect of carbon dioxide on the anima l .
amount of carbon-dioxide absorbed by t he ani mal.
Why are a water bath and thermometer us ed?
A.
B.
C.
D.
E.
33.
Ordinary
To
To
To
To
To
keep the animal cool.
keep the animal warm.
keep the temperature from changing.
prevent leakage of gases from the apparatus .
keep the pressure constant around the animal .
Which one of the following is true af ter 5 minutes?
A.
B.
c.
D.
E.
The volume of air enclosed in the apparatus has increased.
The volume of air enclosed in the apparatus has decreased.
No change has taken place.
Ne further movement of the 011 drop can be expected.
The 011 drop will now begin to move in the other
direction.
12
411
34.
wh1ch one of the following methods could the ap,aratus
be made more sensitive to small changea of volume?
~y
A.
B.
C.
D.
E.
· 35.
By
By
By
By
By
using a smaller test tube.
raising the temperature of the water.
using more of the carbon d10xide absorbent.
using a wider tube for the oil drop.
us1ng a narrower tube for the oil drop.
The apparatus shown below is aaaembled to reduce copper (II)
oxide with hydrogen gas.
M
N
~ 'COPPER OXIDE
INC
Hydrogen gas is produced in generator 'K' and is passed
over hot copper (II) oxide in glass .tube, 'M'. Tiny droplets
of water collect
on the inside of tubes 'M' and 'N'. These
dropleta could posaibly come from the generator 'K', being
carried through into the reat of the apparatus by the stream
of hydrogen. In order to test the truth of this explanation
it would be best to
.A.
B.
C.
heat tube 'M' further
heat the generator 'K'
add a calcium chloride drying tube at the right of tube
D.
E.
add dry calcium chloride to tube 'L'
try to produce hydrogen by the reaction of zinc with a
different acid.
'M'
13
36.
!R..r.JI',c: r ft:> ""
ri- ~6'l<
Whic L ---2:':. ::.!: i~h '~' ·PnL1O'tJing c o r r ec+.:Ly li s t s the errors in the
apparatus diagram shO,ir). ab ove for prepa:6ng a water-insoluble
gas?
A.
B.
C.
D.
E.
The thistIe funne l tube goes belo,;' the level of the
li~ui d in the reaction flask, and the wash bottIe is
connected the wrong way round.
The level ·of the water in the trough is too lOw, and
the tube leading to the wash bott le does not come from
below t~e level of the liquid in the reaction flask.
The wash bottIe is connected the wrong way around, and
no level of liquid is shown in the bowl of the thistIe
funnel.
The thistIe funnel tube goes below the level of the
liquid in the reaction flask, and the level of the
water in the trough is too low.
The level of the water in the trough is too low, and
the wasb bott le is connected the wrong way around.
37.
a~~z;=~~::",-< ",;
...
:::j
i i
\
~
,
i,
i! :1
!
~
e
:l 'I
J
P- ,
ri
~_~· U
il
SR.turated Ilrine
l)
(#
l
l
I
'l
fl
l
',I
'\
"
:~
';
~
(,
:,
:~
t.~
A substance has a boiling point of -180°C. In its gaseous
state it is less dense than air and soluble in water. From
the diagrams above select the one representing the most
suitable apparatus by which to collect the gas.
15
4B
Questions 38, 39 and 40 refer to the following circuit diagram.
c
A
For the following questions, i ndicat e the letter denoting
the appropriate responses in the blank spaces on the answer
card.
38.
Indicate where you would place a switch to cut off lamp L
2
only.
39.
Indicate where you would place a variable resistor to dim
both lamps.
40.
Indicate where you would place a variable resistor to dim
L2 only.
l~mp
END OF
BOOKLET
4