1.
Which of the following processes could be used to preserve fish for a long time?
Boiling only
Salting only
Sun drying only
Boiling and sun drying
2.
One hectare is equivalent to
100 m2
1,000 m2
10,000 m2
100,000 m2
3.
Which of the following causes ringworm?
Bacteria
Fungi
Protozoa
Ticks
4.
The central nervous system is made up of the
Brain only
Spinal cord only
Brain and sense organs
Brain and spinal cord
5.
An object weighing 60 N is dragged through a distance of 2 m. Calculate the work done
6 J
15 J
30 J
120 J
1200 J
6.
Which of the following substances is necessary for the formation of food in plants?
Carbon dioxide
Nitrogen
Oxygen
Starch
Sugar
7.
How many times is the sun overhead at the equator within a year?
1
2
3
4
5
8.
Which of the following takes the shape of its container?
Chalk
Charcoal
Paper
Petrol
9.
A group of stars form
The universe
The atmosphere
The solar system
The planetary system
10.
Which of the following types of soil is good for plant growth?
Clay
Course sand
Fine sand
Loam
11.
The equation Carbon (IV) oxide + water Chlorophyll→Light Glucose + Oxygen, represents
Breathing
Diffusion
Photosynthesis
Respiration
Transpiration
12.
Which of the following pairs of diseases are both contracted through water?
Cholera and dysentery
Smallpox and dysentery
Ringworm and smallpox
Tuberculosis and cholera
13.
The efficiency of a machine is usually less than one due to
friction
greasing
heat
the load used
14.
Which of the following pairs of organisms are decomposers?
Animals and bacteria
Animals and fungi
Bacteria and plants
Bacteria and fungi
15.
A mixture of engine oil and water could be best separated by
Evaporation
Freezing
Decantation
Heating
Addition of soap
16.
Which of the following plants is propagated vegetatively?
apple
coconut
pawpaw
pear
17.
Which of the following diseases is transmitted by close contact with an infected person?
AIDS
Bilharzia
Elephantiasis
Measles
18.
The breakdown of rocks into smaller particles is known as
decomposition
erosion
ploughing
terracing
19.
Which of the following energy changes takes place when a church bell is tolled?
Chemical energy is changed to sound energy
Kinetic energy is changed to sound energy
Potential energy is changed to sound energy
Potential energy is changed to kinetic energy
20.
21.
Which of the following features is shown by plants only?
Feeding
Growth
Transpiration
Reproduction
22.
The structure of the skin that removes waste substances is the
fat deposit
hair
sweat duct
sweat gland
23.
Which of the following statements about light is true?
Light is reflected from polished surfaces
Light travels through opaque objects
Light passes through plane mirrors
The angle of incidence is between the normal and the reflected ray
The speed of light is less than that of sound
24.
The efficiency of a machine is given by the ratio
25.
About 55% of blood is made up of the plasma while the remaining 45% is made up of
Cells
Cochlea
Iris
Retina
26.
Which of the following is a structure in the ear?
Cornea
Cochlea
Iris
Retina
27.
Brass is an alloy made up of
Aluminium and zinc
Copper and tin
Copper and zinc
Iron and carbon
28.
29.
A body which moves round the earth is called
A meteorite
A satellite
A star
Jupiter
30.
Which of the following processes should be carried out first when separating a mixture of sand and common salt?
crystallization of the salt
dissolution of the salt
distillation of the solvent
filtration of the mixture
sublimation of the solute
31.
A temperature controlling device which works using the principles of expansion and contraction is called a
conductor
fuse
manometer
thermometer
thermostat
32.
33.
The fusion of the male and female gametes is known as:
copulation
evolution
fertilization
ovulation
34.
Calculate the voltage across a wire of resistance 4 ohms if 3 amperes of current is passed through it.
0.75 V
1.00 V
1.33 V
7.00 V
35.
Which of the following flower parts develops into a seed? The
ovule
pollen grain
stamen
stigma
36.
The ability of an organism to resist infection by producing antibodies is known as
diagnosis
immunity
incubation
inoculation
37.
The part of cocoyam which is used in propagation is the
bulb
corm
seed
sucker
38.
Which of the following diseases affects the lungs?
Cholera
Measles
Tetanus
Tuberculosis
39.
40.
The stretched arm of a JSS student holding a stone in the palm is an example of a
First class lever
Second class lever
Third class lever
Fourth class lever
(a)
State two differences between a planet and a star.
(b)
(i)
What is surface tension.
(ii)
State one way in which surface tension can be useful to man.
(c)
(i)
Give one example each of a rhizome, a corm, a stem tuber, a bulb and a sucker.
(ii)
State two reasons why a rhizome, a corm and a stem tuber are considered as stems.
(d)
Name the compounds formed when the following elements combine:
(i)
zinc and oxygen
(ii)
calcium and chlorine
(iii)
sodium and bromine
(iv)
potassium and iodine
(a)
(i)
What is a fertile soil?
(ii)
Name four of the most important nutrients in mineral salts which plants use to form food.
(b)
(i)
Define density of a substance
(ii)
Describe briefly how you would determine the density of an irregular piece of stone.
(iii)
A box with volume 1200.0 m3 is filled with sand to the brim. If the density of the sand is 1.95 kgm-3, calculate the mass of the sand contained in the box.
(c)
(i)
Define an atom.
(ii)
Why are atoms electrically neutral?
(a)
Explain the following
(i)
Crackling noises are heard from a metal sheet roof when the weather becomes very hot.
(ii)
Railway tracks are laid with gaps in between their ends.
(iii)
A fitting mechanic washes his greasy hands with petrol and not with water.
(b)
What observation will be made if a piece of blue litmus paper is dropped in each of the following:
(i)
sodium hydroxide solution
(ii)
dilute hydrochloric acid
(iii)
lime juice
(iv)
distilled water
(v)
rain water
(c)
State any three ways in which constipation could be avoided.
(d)
What are the end products of the digestion of each of the following food substances?
(i)
Carbohydrates
(ii)
Proteins
(iii)
fats
(a)
State four ways by which plants are able to protect themselves against animals.
(b)
(i)
Define pollination.
(ii)
List four features of insect pollinated flowers.
(c)
An atom has three protons and three neutrons.
(i)
How many electrons are there in this atom?
(ii)
Draw a labeled diagram to show the arrangement of all the particles in the atom.
(d)
A body of mass 12.0 kg is placed on an orange tree 20.0 m above the ground
(i)
Calculate its potential energy with respect to the ground
(ii)
If the body is released from this height, what will be its kinetic energy just before it hits the ground.
[g = 10 ms-2]