KUULCHAT
SCIENCE MOCK
OBJECTIVE TEST
1.
The gas produced when glucose is oxidized during aerobic respiration is
A.
Hydrogen
B.
Nitrogen
C.
Oxygen
D.
Carbon dioxide
2.
Atmospheric pressure is measured with
A.
an anemometer
B.
a thermometer
C.
a galvanometer
D.
a barometer
E.
a voltmeter
3.
Which of the following examples is a source of energy?
A.
Electricity
B.
Heat
C.
Light
D.
Wood
4.
The structure which enables a fish to breate in water is
A.
buccal cavity
B.
gills
C.
swim bladder
D.
lungs
5.
Which of these organs in humans releases carbon dioxide as a waste product?
A.
Kidney
B.
Liver
C.
Lung
D.
Skin
6.
Chinchilla is a breed of
A.
goats.
B.
pigs.
C.
rabbits.
D.
sheep.
7.
Brass is an alloy of copper and
A.
aluminium.
B.
carbon.
C.
iron.
D.
tin.
E.
zinc.
8.
Which of the following components of human blood is dissolved in the plasma?
A.
Mineral salts
B.
Phagocytes
C.
Platelets
D.
Red blood cells
9.
Which of the following elements is a metal?
A.
Carbon
B.
Nitrogen
C.
Sulphur
D.
Sodium
10.
The part of the human ear which collect and direct sound waves is the
A.
ear drum.
B.
ear lobe.
C.
ear canal.
D.
semi circular canal
11.
The human male sex cell that takes part in reproduction is the
A.
penis
B.
scrotum
C.
sperm
D.
testis
12.
The organ which enables a fish to breathe in water is the
A.
Nostril
B.
Pectoral fin
C.
Dorsal fin
D.
Gall bladder
E.
Gill
13.
The force that opposes the motion of an object on another object is called
A.
electrical force.
B.
frictional force.
C.
gravitational force.
D.
magnetic force.
14.
The transfer of heat through a solid medium is by
I. conduction
II. convection
III. radiation
A.
I only
B.
II only
C.
III only
D.
I and II only
E.
II and III only
15.
The part of sugar cane that is usually used for planting is the
A.
corm.
B.
leaf.
C.
stem.
D.
sucker.
16.
Which of the following properties of alcohol as a thermometric liquid is correct?
A.
It is opaque.
B.
It does not wet glass.
C.
It has a very flow freezing point.
D.
It has a high freezing point.
17.
Which of the following illustrations shows the correct direction of the lines of force around a bar magnet?
A.
B.
C.
D.
18.
A good thermometer liquid must
A.
be colourless.
B.
boil at 100oC and freeze at 0oC.
C.
cling to the walls of the glass.
D.
expand evenly and regularly.
19.
Oxygen is made available to all cells of the human body by the
A.
plasma.
B.
platelets.
C.
white blood cells.
D.
red blood cells.
20.
Use the information below to answer the question that follow.
A solid X reacted with a liquid Y to form a salt and water only. A portion of liquid Y turned blue litmus paper red. Solid X did not dissolve when a portion of it was placed in water and stirred.
Solid X could be said to be
A.
an acid.
B.
an alkali.
C.
a base.
D.
a salt.
21.
The force which tends to pull an object in a circular motion towards the centre of the circle is called
A.
centripetal force.
B.
electrostatic force.
C.
gravitational force.
D.
magnetic force.
22.
Living things are different from non-living things because living things
A.
are made up of protoplasm
B.
do not have definite forms
C.
take in liquid foods
D.
have chlorophyll
E.
vary widely in form and size
23.
Which of the following plants has suckers?
A.
Onion
B.
Orange
C.
Plantain
D.
Sweet Potato
E.
Yam
24.
Elements that could easily lose electrons to form cations are
A.
metals.
B.
non-metals.
C.
semi-metals.
D.
noble gases.
25.
The structure which helps a fish to breath under water is the
A.
gill.
B.
air sac.
C.
operculum.
D.
mouth.
26.
The different types of teeth that an animal has gives an indication of the nature of its
A.
digestion.
B.
environment.
C.
feeding.
D.
reproduction.
27.
The efficiency of a machine is usually less than one due to
A.
friction
B.
greasing
C.
heat
D.
the load used
E.
the effort applied
28.
Heat travels through vacuum by
A.
conduction.
B.
convection.
C.
radiation.
D.
convection and radiation.
29.
When carbon dioxide is passed through lime water
A.
the lime water becomes warm
B.
the lime water turns milky
C.
the lime water remains clear
D.
lime is produced
E.
the lime water decomposes
30.
Which of the following substances is a compound?
A.
Hydrogen
B.
Nitrogen
C.
Oxygen
D.
Water
31.
The force that binds molecules of the same substances together is called
A.
adhesion.
B.
cohesion.
C.
capillary action.
D.
surface tension.
32.
The transfer of heat from the bottom to the top of a beaker containing water is by
A.
absorption.
B.
conduction.
C.
convection
D.
radiation
33.
The best reason why a cooking pan should have a wooden handle is that, wood is a
A.
good conductor of heat
B.
bad conductor of heat
C.
good radiator of heat
D.
bad radiator of heat
E.
good reflector of heat
34.
The chemical solution that can be used to test for the presence of protein in food substances is
A.
Benedict's solution.
B.
Fehling's solution.
C.
Iodine solution.
D.
Millon's reagent.
35.
Which of the following devices requires the use of transistors in its operation?
A.
Computer
B.
Electric heater
C.
Microphone
D.
Wall clock
36.
A fish dies shortly after being removed from water. This is because it
A.
cannot swim
B.
is streamlined
C.
is hot on land
D.
has scales
E.
cannot respire
37.
The end product of protein digestion is
A.
amino acid.
B.
glucose.
C.
maltose.
D.
poly-peptide.
E.
sucrose.
38.
Which of the following statements about aerobic and anaerobic respiration is not correct?
A.
Water is produced as a by-product in anaerobic respiration.
B.
Alcohol or lactic acid is produced in anaerobic respiration.
C.
No oxygen is required in anaerobic respiration
D.
Very little energy is released in anaerobic respiration.
39.
Water drains faster through sand than clay because
A.
sand particles are rougher.
B.
sand contains more air space.
C.
clay particles are smoother.
D.
clay particles are bigger.
40.
The basic unit of matter is the
A.
atom.
B.
compound.
C.
element.
D.
electron.
E.
ion.
THEORY QUESTIONS
1.
(a)
The diagrams below are illustrations of a set-up used to study the conditions for seed germination. The flasks are kept at 25 oC during the experiment. Study the diagrams carefully and answer the questions that follow.
(i)
What conclusion can be drawn from the results of flask 1 and flask 2?
(ii)
What conclusion can be drawn from the results of flask 2 and flask 3?
(iii)
The seedings in flask 2 died after two weeks. What can be the reasons for this occurrence?
(iv)
A candidate concluded that light was an important factor for the germination. Did the candidate make a correct conclusion?
(v)
Give a reason for the answer stated in (iv) and state which of the flasks in the experiment could be used to support your answer.
(b)
The diagram below are illustrations of an experimental set-up. Study the diagrams carefully and answer the questions that follow.
(i)
Name the measuring instrument that is in:
(α)
parallel;
(β)
series;
With the resistor R
(ii)
What quantity does each of the named instruments in (i) measure?
(iii)
Read and record the values as indicated on:
(α)
A in amperes;
(β)
V in volts.
(iv)
Use the values read in (iii) to calculate the value of R.
(v)
State one precaution to be taken in performing this experiment.
(c)
The diagrams below are illustrations of soil.Study the illustrations carefully and answer the questions that follow.
(i)
Identify each of the soil types labelled A, B and C
(ii)
Describe each of the soils under the following properties:
(α)
Particle size
(β)
Air space
(iii)
State two ways of improving soil type B for vegetable cultivation.
(d)
The diagrams below is a set-up for preparation of common salt in the laboratory. Study the diagrams carefully and answer the questions that follow.
(i)
Name each of the parts labelled IV, V and VI.
(ii)
Name two possible solutions that can react to product salt.
(iii)
Name the process that takes place when the two solution named in (ii) react.
(iv)
Name the process that takes place in the set-up B.
(v)
Write a balanced chemical equation for the reaction between the two solutions named in (ii).
2.
a)
State three external features of the weaver birds that adapt to live successfully in its environment.
b)
List four harmful effects of air pollution.
c)
i)
Draw the magnetic lines of force around a bar magnet.
ii)
If the work input of a machine is 30 joules, what would be its efficiency when the work output is 25 joules?
d)
Outline three principles involved in vegetable crop production.
3.
a)
The diagram below are illustrations of two cells labelled A and B
Study the diagram carefully and answer the questions that follow.
i)
Name each of the parts labelled I, II, III and IV.
ii)
Which of the parts named in (a)(i) is the same as the parts labelled VI and IX in cell B?
iii)
Which of the cells is a plant cell?
iv)
Give two reasons for the answer given in (a)(iii).
v)
Tabulate two differences between the parts labelled I and V.
b)
The diagram below is an illustration of an experiment carried out in the laboratory.
Study the diagram carefully and answer the questions that follow.
i)
Read and record the:
(α) mass of irregular object (M) in I
(β) Volume of water (V1) in II
(γ) Volume of water (V2) in III
ii)
Determine the volume of the irregular object.
iii)
Calculate the density of the irregular object.
iv)
Name the instrument that could be used to measure the mass of an irregular object.
v)
State one precaution to be taken in performing the experiment.
c)
The following activities were performed in the laboratory by groups of pupils.
Study the activities and answer the questions that follow.
i) Camphor was heated.
ii) Wood was burnt.
iii) Iron nails were heated strongly.
iv) Sodium chloride was dissolved in water.
i)
Which of the following activities are:
(α) chemical processes;
(β) physical processes.
ii)
Give two reasons why the activities listed in:
(α) (i)(α) are chemical processes;
(β) (i)(β) are physical processes.
iii)
Give two examples of physical change that take place in your environment.
d)
A farmer cultivated soya bean, yam and maize on a farm in a rotational programme as illustrated below.
Study the diagram carefully and answer the questions that follow.
i)
Copy and complete the table.
ii)
List three principles to consider when planning this rotational programme.
iii)
Give two reasons for selecting the crop named for V in plot 1 year 3.
iv)
State one advantage of practising this farming system.
4.
a)
The diagram below is an illustration of a longitudinal section of a canine tooth in humans.
Study the diagram carefully and answer the questions that follow.
i)
Name each of the parts labelled I, II, III and IV.
ii)
What is the function of each of the parts labelled I and III?
iii)
Which of the labelled parts could be affected by tooth decay?
iv)
State three ways by which tooth decay may be prevented.
b)
The diagram below is an illustration of a scientific phenomenom which occurs in nature.
Study the diagram carefully and answer the questions that follow.
i)
What phenomenom does the diagram illustrate?
ii)
Identify each of the parts labelled I, II, III, IV and V.
iii)
Explain why an object at the bottom of a pond appears closer to the surface than it actually is.
c)
The diagram below is an illustration of an experiment performed to separate the components of muddy water.
Study the diagram carefully and answer the questions that follow.
i)
Name each of the parts labelled I, II and III.
ii)
State the function of the part labelled II.
iii)
Name the substance obtained as the filtrate.
iv)
State three physical properties of the filtrate.
v)
Name two other materials that could be used in place of the part labelled II.
d)
The diagram below is an illustrates a farmland on a sloppy area.
Study the diagram carefully and answer the questions that follow.
i)
What process is likely to occur on the farmland when it rains heavily?
ii)
State two farming practices that can also lead to the process mentioned in (i).
iii)
List four farming practices that could be used to control the process mentioned in (i).
iv)
Mention three soil resources that would be depleted from the farmland when it rains heavily.
5.
a)
i)
State two uses of water in agriculture.
ii)
Name two crops that are deep rooted.
b)
i)
Explain the term circulatory system in humans.
ii)
Classify each of the following processes as diffusion or osmosis:
α)
absorption of water by the roots of a plant
β)
movement of digested food from the small intestine into the blood stream
c)
i)
What is mass?
ii)
A box of equal size 3cm has a density of 2.0gcm-3.What is its mass?
d)
Give the state of each of the following substances:
i)
ash;
ii)
carbon dioxide.
6.
a)
i)
State three effects of soil erosion on the growth of crop plants.
ii)
Mention one method of controlling soil erosion.
b)
i)
Name two science related businesses.
ii)
State the principles underlying the operation of each of the businesses named in (i).
c)
i)
Explain how the female Anopheles mosquito transmits malaria to humans.
ii)
State one chemical method of controlling mosquitoes.
d)
i)
Name two fundamental units of measurement.
ii)
State the physical quantity that one of the units named in (i) measures.