1.
The process of fusion of sperm and ovum is known as
fertilization
menstruation
pollination
reproduction
Answer: A
2.
Which of the following environmental factors can cause the fastest rate of water loss from leaf surfaces?
High humidity
Wet wing
Still air
Low temperature
Dry air
Answer: E
3.
One benefit of technology to industrialization is
increase in cost of production.
reduction in skillful labour.
provision of machinery.
environmental pollution.
Answer: C
4.
The term used to describe a rabbit giving birth is
culling.
dubbing.
kindling.
weaning.
Answer: C
5.
Which of the following activities of man causes both air and water pollution?
Afforestation
Construction of houses
Construction of roads
Deforestation
Industrialization
Answer: E
6.
When a person jumps up, he/she is able to come down because of the
pull of the earth's gravitational force.
pull of the earth's magnetic force.
resistance of the earth's atmosphere to the upward motion.
pressure of the earth's atmosphere on the person.
Answer: A
7.
Which of the following substances is a pollutant?
Domestic waste
Fog
Nitrogen
Oxygen
Treated Waste
Answer: A
8.
In which of the positions Q,R,S,T in the diagram below will a body have the greatest potential energy?

Q
R
S
T
Answer: B
Potential energy = Mass x Acceleration due to gravity x Height
Acceleration due to gravity is constant, mostly 10 ms-2.
If the mass is constant, the potential energy will depend on the height of the object.
The greater the height, the greater the potential energy.
In the above diagram, R is the tallest (greatest height), hence its potential energy will be the greatest.
9.
Calculate the work done when a weight of 20.0 N is lifted vertically through a distance of 10.0 cm
2000.0 J
200.0 J
20.0 J
2.0 J
0.2 J
Answer: D
Work done = Force x Distance
Force = 20.0 N
Distance = 10.0 cm
The S.I unit of distance is metre. Hence convert the 10.0 cm to metre by dividing by 100
10 cm = m
Work done = 20 N x m = 2 J
Notes:
1. 20 divides itself 1 time and 100, 5 times
2. 5 divides itself 1 time and 10, 2 times
10.
Which of the following statements about bacteria is true?
I. All infections are caused by bacteria
II. Most bacteria are harmless to man
III. Sterilisation does not kill bacteria
I only
II only
III only
II and III only
I and II only
Answer: B
11.
A machine which has an energy loss of 10% will have an efficiency of
100%
90%
55%
10%
Answer: B
Efficiency = 100% - % Energy Loss
Efficiency = 100% - 10%
Efficiency = 90%
12.
Which of the following plants reproduce(s) vegetatively?
I. Banana
II. Mango
III. Ginger
II only
I and II only
I and III only
III only
Answer: C
Vegetative reproduction, any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or grows from a specialized reproductive structure (such as a stolon, rhizome, tuber, corm, or bulb).

13.
A screw is a machine which works in the same way as
a lever.
an incline plane.
a wheel and axle.
a pulley.
Answer: B
Screw
A screw is an inclined plane that is coiled around a shaft. They usually have one flat end and one pointed end.

14.
The following devices work based on the principle of pressure in fluids except
siphons.
flutes.
drinking straws.
water pumps.
Answer: B
15.
A metallic saddle was left in a boiling soup. After sometime, the handle became hot.
This is because the particles in the saddle
undergo rapid, random motion,
contain free electrons which are able to transfer heat energy.
are separated by large distances.
circulate as a result of the temperature differences.
Answer: A
16.
Which of the following diseases affects the lungs?
Cholera
Measles
Tetanus
Tuberculosis
Answer: D
17.
Which of the following Ghanaian scientists is known for promoting Mathematics and Physics?
Prof. Anamuah Mensah
Prof. Ewurama Addy
Prof. Francis Allotey
Prof. Osei Anto
Answer: C
18.
One disease which can be transmitted through eating half cooked meat is
guinea worm.
hook worm
thread worm.
tape worm.
Answer: D
19.
The food substance needed for growth and repair of tissue is
carbohydrates.
oil.
protein.
vitamin.
Answer: C
20.
Answer: C
21.
A solar cell produces electrical energy from
electromagnets
heat
light
sound
Answer: C
22.
The chemical formula of an aluminium sulphide is AlyS3.Determine the value of y
1
2
3
4
Answer: B
When writing the chemical formula, the element(s) or compound(s) exchange their valencies.The sulphur has that of the aluminium element's valency (3) and so the value of y will also be the valency for sulphur
The atomic number for sulphur is 16 so on the electronic configuration, sulphur will have 2,8 and 6 on the last shell.
In order for sulphur to attain stability, it has to gain 2 electrons to make it 8 in the last shell, hence the valency of sulphur is 2 and so the value of y will be 2 (the valency of sulphur)
NOTE: The atomic number for aluminium is also 13, hence the electronic configuration will be 2,8 and 3. Aluminium could lose its 3 electrons in order to be stable, hence the valency of aluminium is also 3
Hence the chemical formula for aluminium sulphide is Al2S3
23.
The grouping together of many stars is known as
comet.
astronomy.
solar-system.
galaxy.
Answer: D
24.
Which of the following substances is a digestive juice?
Blood
Bile
Sweat
Tear
Answer: B
Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.
25.
A beneficial effect of wind on the environment is
promotion of photosynthesis in green plants.
pollination in flowering plants.
leaching in soils.
erosion in soils.
Answer: B
26.
Which of the following statements are true of compounds?
I. They are homogenous
II. Their constituents are present in fixed ration by mass
III. Their constituents keep their individual properties
I and II only
I and III only
II and III only
I, II and III
Answer: C
27.
Which of the following is not true about frictional force? It
increases motion
opposes motion
damages machines
produces heat
Answer: A
28.
Which of the following practices encourages soil erosion?
Planting cover crops
Mulching
Contour ridging
Crop rotation
Answer: E
29.
When testing for proteins in a food substance using Fehling's solution, the expected colour change is
blue.
purple.
blue-black.
brick-red.
Answer: D
30.
When the testa of a soaked bean is removed, the seed is seen to be made up of mainly
micropyles
hilum
radicle
embryo
Answer: E
31.
Which of the following bodies is a satellite of the earth?
Mars
Sun
Venus
Moon
Answer: D
32.
The sun and the planets form the
atmosphere.
constellation.
milky way.
solar system.
universe.
Answer: D
33.
An atom that has lost one or more electron(s) is called
a molecule.
a proton.
am ion.
a negative particle.
Answer: C
34.
A chemical that can be used to test for the presence of protein in food substances is
Benedict’s solution
Fehling’s solution
Eosin solution
Iodine solution
Answer: E
35.
Which of these is not a sense organ?
Eye
Ear
Nose
Skin
Heart
Answer: E
36.
An example of a first class lever is
bottle opener.
crow bar.
wheel barrow.
fishing rod.
Answer: B
First Class Lever
A first-class lever has the fulcrum/pivot in the middle and the load and effort on each side of the fulcrum.

Examples of a first class lever
Pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance.
Second Class Lever
In second class levers the load is between the effort (force) and the fulcrum. A common example is a wheelbarrow where the effort moves a large distance to lift a heavy load, with the axle and wheel as the fulcrum.
Nutcrackers are also an example of a second class lever.
Third Class Lever
With third class levers the effort is between the load and the fulcrum, for example in barbecue tongs. Other examples of third class levers are a broom, a fishing rod, etc.
37.
For healthy growth, the food we eat must contain
fat, oils and proteins
important nutrients in the right proportions
a good proportion of carbohydrates and proteins
mineral salts, vitamins and water
Answer: B
38.
Two unknown solutions labelled A and B were brought to a JHS 3 class. It was observed that in solution A, red litmus paper changed colour to blue, whiles in solution B, red litmus paper retained its colour. What could be the content of solution A?
Car battery fluid
Salt solution
Baking soda
Orange juice
Answer: C
Base turns red litmus paper blue. Baking soda is a base
39.
Which of the following diseases is not a deficiency diseases?
Scurvy
Cholera
Beriberi
Goiter
Answer: B
Cholera: is an acute diarrheal illness caused by infection of the intestine with Vibrio cholerae bacteria.
Deficiency Diseases
Deficiency diseases are diseases that are caused by the lack of certain essential nutrients in one's diet over a prolonged period of time.
| Nutrient | Disease |
| Vitamin A (Retinol) | Night blindness |
| Vitamin B1 (Thiamine) | Beri-beri |
| Vitamin B2 (Riboflavin) | Retarded growth, bad skin |
| Vitamin B12 (Cyanocobalamin) | Anaemia |
| Vitamin C (Ascorbic acid) | Scurvy |
| Vitamin D (Calciferol) | Rickets |
| Vitamin K (Phylloquinone) | Excessive bleeding due to injury |
| Calcium | Brittle bones, excessive bleeding |
| Phosphorus | Bad teeth and bones |
| Iron | Anaemia |
| Iodine | Goitre, enlarged thyroid gland |
| Copper | Low appetite, retarded growth |
40.
Addition of more solvent to a solution makes the solution more
dense.
dilute.
concentrated.
saturated.
super saturated.
Answer: B
a)
What are
i)
annual plants?
ii)
perennial plants?
b)
Mention one danger involved in each of the following activities in the laboratory:
i)
eating or drinking water in the laboratory;
ii)
washing hands with unknown liquid in a beaker;
iii)
walking barefooted.
c)
i)
What is a digestive enzyme?
ii)
Give two examples of digestive enzymes in humans.
d)
Give two differences between conduction and radiation of heat.
a)
i)
Annual plants are plants which grow in one year/season during which they produce fruit and seeds and die off.
OR
Annual plants are plants that complete their life cycle in one season/one year.
ii)
Perennial plants are plants which continue to grow season after season producing fruits and seeds.
OR
Perennial plants are plants that complete their life cycle in more than two years.
b)
i)
Danger involved in eating or drinking water in the laboratory
May result in the drinking of poisonous substances or eating contaminated foods.
ii)
Danger involved in washing hands with unknown liquid in a beaker
May result in burns/irritation/injury
iii)
Danger involved in walking barefooted
1. May result in slipping if there is water on the floor.
2. A person/One may get pricked with pieces of broken bottles/pins
3. A person/One may get burnt
c)
i)
Digestive enzyme is a chemical/biological catalyst that help in breaking down food substances in the body
ii)
Examples of digestive enzymes in humans
1. Salivary amylase/Ptyalin
2. Pancreatic amylase
3. Maltase
4. Sucrase
5. Proteases/pepsin/rennin/trysin/erepsin/peptidase
6. Lipases
d)
Differences between conduction and radiation of heat
| CONDUCTION | RADIATION |
| Travels in a material medium well | Travels through a vacuum |
| Does not depend on the colour (black or white) of the body | Black bodies radiate heat well |
| Heat travels from one molecule to another | Heat travel is by electromagnetic waves |
(a)
Fig. 5 is an electrical circuit diagram.
Study it and answer the questions that follow.

Calculate the:
(i)
effective resistance in the circuit when it is closed;
(ii)
current that will flow through the circuit when it is closed.
(b)
(i)
Differentiate between an organic fertilizer and an inorganic fertilizer.
(ii)
Outline briefly the steps involved in preparing raised beds.
(c)
(i)
State one function each of the following components of blod:
(α)
red blood cells;
(β)
white blood cells;
(γ)
blood plasma.
(ii)
Explain briefly the impact of each of the following organisms on humans:
(α)
housefly;
(β)
grasshopper.
(d)
Describe briefly the formation of an ammonia molecule after an interaction between 1H and 7N atoms.
(a)
(i)
= + + + ...
= +
= +
=
=
=
Cross multiply.
RT x 9 = 1 x 20
Divide both sides by 9
RT = Ω or 2 Ω or 2.2 Ω
Note: mark is deducted for answer without unit (Ω)
(ii)
Voltage (V) = Current (I) x Resistance (R)
Voltage (V) = 6V
Resistance (R) = Ω
6 = I x
Multiply both sides by the denominator 9
6 x 9 = 20 x I
Divide both sides by 20
I = = = 2.7 A
Note: Mark is deducted for answer without or incorrect unit.
(b)
(i)
Distinction between organic fertilizer and inorganic fertilizer
Organic fertilizers are derived from natural sources/plants and animals whereas inorganic fertilizers are manufactured artificially from physical and chemical processes.
(ii)
Steps involved in preparing raised beds
1. Clearing of vegetation/weeds
2. Digging/loosening of top soil
3. Digging a path/furrow round the bed area
4. Breaking large lumps
5. Removing roots and stones
6. Shape the bed into size and firm the edges/Build the frame
7. Rake to level the surface of the bed
8. Water the bed
(c)
(i)
Function of the components of blod:
(α)
Red blood cells
Carry oxygen towards the tissues from the lungs/carbon dioxide
(β)
White blood cells
Protects against illness/fights parasites
(γ)
Blood plasma
Maintains blood pressure and circulation/transport nutrients/heat/water/hormones, etc.
(ii)
Impact of organisms on humans:
(α)
Housefly
1. It helps in the breakdown and recycling of organic matter
2. It help spread diseases such as dysentery, cholera, etc.
(β)
Grasshopper
1. It consumes crops vegetation
2. It helps the ecosystem by the decomposition of plants
(d)
Formation of an ammonia molecule from 1H and 7N atoms
1. 1H has one valence electron
2. 7N has five valence electrons
3. 3 H atoms combine with one N atom
4. Each H atom shares a bond with one electron from N to form NH3 molecule
(a)
(i)
Explain heredity
(ii)
Give two examples of heredity characters.
(b)
Explain whether each of the following processes is a chemical change or a physical change:
(i)
Rusting;
(ii)
Burning;
(iii)
Filtration;
(iv)
Expansion of copper.
(c)
(i)
What is a simple machine?
(ii)
Name two types of simple machines.
(iii)
Explain why the efficiency of a machine cannot be equal to 100%.
(a)
(i)
Heredity is the process in which offsprings acquire characteristics from their parents through the genes they receive from them.
(ii)
Examples of heredity characters
1. Weight
2. Intelligence
3. Colour of the skin
4. Ability to roll the tongue
5. Temperature
6. Height/stature of an individual
7. Colour of eyes
8. Colour of hair
9. Blood group
10. Shape of face/nose/head/eye
11. Haemophilia
12. Albinism
13. Sex
(b)
Chemical change and physical change:
(i)
Rusting
Chemical change because a new substance (rust) different from iron is formed.
(ii)
Burning
Chemical change because the ash cannot be turned back easily into the original material.
(iii)
Filtration
Physical change because the components can be gotten easily.
(iv)
Expansion of copper
Physical change because the original shape of the copper can be gotten easily.
(c)
(i)
Simple machine is a device that can be used to make work easier or faster.
OR
Simple machine is a device on which a force/an effort is applied at one point to overcome another force/load at another point.
OR
Simple machine is a device which enables a small force (effort) to overcome a large force (load).
(ii)
Types of simple machines
1. Levers
2. Inclined plane
3. Pulley
4. Wheel and axle
5. Screw
6. Wedge
7. Gears
(iii)
Why the efficiency of a machine cannot be equal to 100%
Part of the work put in the machine to overcome the load is used to overcome friction/weight of machine parts/force of gravity/air resistance so that the work output is always less than the work input.
(a)
Explain each of the following observations in nature:
(i)
In the depths of the ocean where it is always dark, there are no green plants.
(ii)
On an island where there are no insects and birds, the pawpaw plant produces only flowers but no fruits
(b)
Describe how soil is formed.
(c)
(i)
State the laws of reflection
(ii)
Draw a labelled diagram to show the reflection of light on a plane mirror
(a)
(i)
In the depths of the ocean where it is always dark, there are no green plants
Light does not get to those depths and therefore photosynthesis cannot occur there.
(ii)
On an island where there are no insects and birds, the pawpaw plant produces only flowers but no fruits
Insects and birds transfer pollen grains for pollination of pawpaw flowers and in their absence fertilization does not occur and there is no fruit formation.
OR
Insects and birds are agents of pollination/transfer pollen grains. In their absence no fertilization and no fruit formation occur.
(b)
How soil is formed
Soil is formed when rocks weather/breakdown to form soil particles. Dead remains of organisms are acted upon by micro-organisms and all mix together.
(c)
(i)
Laws of reflection
1. The incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane
2. The angle of incidence is equal to the angle of reflection
(ii)
A labelled diagram to show the reflection of light on a plane mirror

(a)
(i)
What is the difference between self-pollination and cross-pollination?
(ii)
Name two agents of cross-pollination.
(b)
A ray of light strikes the surface of a plane mirror at an oblique angle.
Draw a ray diagram to show each of the following:
(i)
the normal
(ii)
the incident ray
(iii)
the reflected ray
(iv)
the angle of incidence
(v)
the angle of reflection
(c)
Give one property of the image formed by a plane mirror.
(d)
(i)
Carbon dioxide is prepared in the laboratory by pouring some dilute hydrochloric acid on calcium carbonate. Give a balanced equation for this reaction.
(ii)
How would you test for carbon dioxide?
(iii)
Give one use of carbon dioxide.
(a)
(i)
Difference between self-pollination and cross-pollination
Self-pollination is the transfer of pollen grains from the anther of a flower to the stigma of the same flower whereas cross-pollination is the transfer of pollen grains from the anther of a flower to the stigma of another flower on another plant of the same species.
(ii)
Agents of cross-pollination
1. Bees
2. Birds
3. Bats
4. Insects
5. Wind
6. Water/rain
7. Man
(b)

(c)
Properties of the image formed by a plane mirror
1. The image formed is laterally inverted
2. The image formed is virtual
3. The image formed is same size as the object
4. The image formed is upright/erect
5. Image distance from the mirror is the same as the object distance
(d)
(i)
CaCO3 + 2HCl → CaCl2 + H2O + CO2
(ii)
How to test for carbon dioxide
1. Pass the gas through limewater
2. The colourless limewater turns milky/chalky when there is the presence of carbon dioxide
(iii)
Uses of carbon dioxide
1. Used in fruit preservation
2. Used in the manufacturing of soft drinks
3. Used as fire extinguisher
4. Used as refrigerant
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.
a)
(i) I = cell/plasma membrane, II = cytoplasm, III = nucleus , IV = vacuole
(ii) I is the same as VI (Cell membrane) and IV is the same as IX (Vacuole)
(iii) Diagram B
iv)
Reasons
1. Presence of large/ single vacuole (IX)
2. Presence of cell wall (V)
3. Rectangular shape
4. Nucleus pushed to the side/periphery
5. Cytoplasm pushed to the side
v)
Differences between parts labelled I (Cell Membrane) and V (Cell Wall)
| I (Cell Membrane) | V (Cell Wall) |
| Present in all types of cells, in humans, animals, plants, bacteria, etc. | Present only in plants and in some fungi, bacteria, algae. |
| Semi-permeable | Completely or fully permeable |
| Flexible | Thick and rigid |
| Made up of proteins and lipids | Made up of cellulose |
b)
i)
(α) mass of irregular object (M) in I = 40 g
(β) Volume of water (V1) in II = 40 cm3
(γ) Volume of water (V2) in III = 60 cm3
ii)
Volume of the irregular object = 60 cm3 - 40 cm3 = 20 cm3
iii)
Density =
Density = = 2 g/cm3 or 2 gcm-3
iv)
Instruments for measuring mass of an irregular object
1. Beam balance
2. Top pan balance
3. Electronic balance
iv)
Precautions to be taken in performing the experiment
1. The object should be lowered gently into the water in the cylinder
2. Volume of the liquid should be read from the base of the meniscus or at the eye level
3. The measuring cylinder should be placed on a flat surface
c)
i)
(α) chemical processes
II and III
(β) physical processes
I and IV
ii)
(α) Why chemical processes
1. The initial/original substance cannot be gotten back easily/irreversible
2. New substance formed
3. Change in mass
4. Accompanied by appreciable heat change
(β) Why physical processes
1. The initial/original substance can be gotten back easily/reversible
2. No new substance formed
3. No change in mass
4. Not accompanied by appreciable heat change
iii)
Examples of physical change
1. Expansion of metal on heating
2. dissolving sugar or salt in Water
3. Boiling of water
4. Melting of ice
5. Breaking/crushing of any Object
d)
i)
| Year\Plot | 1 | 2 | 3 |
| 1 | maize | soyabean | yam |
| 2 | yam | maize | soyabean |
| 3 | soyabean | yam | maize |
ii)
Principles to consider when planning for rotational programme
1. Deep rooted crops should be followed by shallow rooted crops
2. Crops of the same family/class should not follow each other
3. Crops that use the same soil nutrients should not follow each other
4. Leguminous crops should be included in the cycle
5. A fallow period may be included in the crop rotation programme
6. Crops which attract the same diseases and pests should not follow each other
iii)
Reasons for selecting the crop named V (Soyabean)
1. Soyabean is a legume and therefore builds up soil fertility
2. Yam is a deep rooted crop and should be followed by soyabean which is a shallow rooted crop
3. Yam is a heavy feeder and must have taken good part of the nutrients
4. Yam and soyabean belong different classes of crops and therefore not likely to attract the same pests and diseases
5. Improves soil structure
iv)
Advantages of crop rotation
1. Increases soil fertility
2. Enhances soil structure
3. Prevents soil erosion
4. Improves soil nutrients and nutrient uptake regulation
5. Controls the spread of pests and diseases
6. Controls weed easily
7. There is effective use of the land
8. Harvest of different types of crops on the same piece of land