1.
The process by which liquid changes into vapour at a particular temperature is known as
boiling.
condensation.
evaporation.
melting.
2.
Which of the following organisms has neither a nucleus nor membrane bound organelles?
Bacteria
Mucor
Paramecium
Spirogyra
3.
A dibber is used for
dehusking.
pruning.
thinning.
planting.
4.
An electric bulb is rated 120 W and 240 V. Determine the current it draws from the mains.
0.5 A
0.6 A
1.0 A
2.0 A
5.
The layer of the atmosphere in which air travel is most convenient is
mesosphere.
stratosphere.
thermosphere.
troposphere.
6.
An agricultural system in which crops and animals are produced on the same piece of land at the same time is termed
continuous cropping.
Mixed cropping.
mixed farming.
pastoral farming.
7.
Cowpea plants are used in crop rotation system of farming so that
grazing animals would not destroy the crops.
nitrates would be added to the soil.
soil erosion could be checked.
weeds would be suppressed.
8.
The angle of reflection of a ray is 40°. Determine the angle between the surface of the mirror and the ray.
40°
50°
80°
180°
9.
Fluid consists of
solid and liquid only.
liquid and gas only.
gas and solid only.
liquid, solid and gas.
10.
Which of the following compounds is a neutral oxide?
CO2
NO2
MgO
CO
11.
For grafting to be successful, the scion and the stock must be of the same
size.
length.
diameter.
texture.
12.
A gas that gives a pop sound with a flame is
ammonia.
carbon (IV) oxide.
hydrogen.
nitrogen.
13.
Fifteen children from a class of 45 roll tongues. What percentage of the class are rollers?
25.3%
33.3%
35.3%
75.3%
14.
The major cause of pest harvest loss of stored millet in Ghana is
bird attack.
insect attack.
mechanical injury.
high humidity.
15.
Examples of plants with rhizome are
ginger and fern.
onion and ginger.
yam and Irish potato.
onion and fern.
16.
The management practice which makes the transport of farm animals easy is
castration.
dehorning.
identification.
quarantine.
17.
Breeds of fowl which are reared for the purpose of producing meat are called
broilers.
chicks.
hens.
layers.
18.
The set-up used to separate water from ethanol should include
separating funnel.
burette.
condenser.
volumetric flask.
19.
Which of the following statements about sea breeze are correct? Sea breeze occurs
I. during the day.
II. during the night.
III. as a result of convection currents.
I and II only
I and III only
II and III only
I, II and III
20.
Mineral salts from the soil pass into the root hair cells by
tugor pressure
active transport
osmosis
capillarity
21.
Which of the following salts can cause temporary hardness in water?
Mg(HCO3)2
Fe2(SO4)3
MgCl2
CaSO4
22.
An example of inorganic fertilizer is
compost.
farmyard manure.
green manure.
urea.
23.
Two resistors each 5 Ω are connected in parallel. Determine their effective resistance.
2.5 Ω
6.4 Ω
10.0 Ω
25.0 Ω
24.
A person who suffers from myopia
cannot see at all.
can see clearly from far.
can see clearly objects closer.
wears a converging lens for correction.
25.
An example of a wind instrument is
flute.
guitar.
violin.
xylophone.
26.
Which of the following statements about compounds are correct
I. They are products of chemical combination.
II. Their constituents are present in fixed ratio 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
27.
The equivalent of 161 K in degree celcius is
161 °C
112 °C
-112 °C
-161 °C
28.
Which of the following processes uses solar energy?
I. Drying materials,
II. Generation of electricity,
III. Heating of food substances.
I and II only
I and III only
II and III only
I, II and III
29.
Turgidity in plants is the result of
water entering the cells.
water leaving the cells.
the withdrawal of cytoplasm from the cell wall.
diffusion of materials into the cells.
30.
Which of the following non-metals conduct electricity?
Diamond
Graphite
Silicon
Vanadium
31.
The main function of ileum in mammals is
digestion and assimilation.
assimilation and absorption.
digestion and absorption.
ingestion and digestion.
32.
Living organisms which help to modify the physical and chemical composition of the soil are
I. earthworms.
II. lichens.
III. bacteria.
I and II only
I and III only
II and III only
I, II and III
33.
The IUPAC name of the compound whose structural formula is illustrated below is
2-chloro-3-methylbut-2-ene.
2-methyl-2-chlorobut-2-ene.
2-chloro-3-methyl-2-butane.
2-methyl-2-chloro-2-butyne.
34.
Organic compounds are mostly
soluble in water.
not inflammable.
covalent.
ionic.
35.
Which of the following compounds of the electromagnetic spectrum has the highest frequency?
Gamma rays
Infra-red radiations
Microwave
Ultraviolet radiations
36.
In mammals, the organ which deaminates excess amino acid to form urea is the
kidney
liver
pancreas
spleen
37.
Maintenance ration provides farm animals with nutrients required for
egg production.
vital body processes.
growth and development.
development and maturity.
38.
Which of the following compounds is a hydrocarbon?
C5H8
C6H12O6
CH3CH2OH
CH3COCH3
39.
A characteristics feature of metamorphic and sedimentary rocks is that they are
crystalline in structure.
non-crystalline in structure.
glassy in appearance.
metallic in appearance.
40.
An example of naturally occurring weak acid is
ammonia.
citric acid.
hydrochloric acid.
nitric acid.
41.
The number of electrons present in the outermost shell of an element with atomic number 20 is
2
6
8
10
42.
The neutrons and protons in the nucleus of an atom are collectively called
mass number.
neutrons.
nucleons.
atomic number.
43.
Energy output in a device is equal to work done
by the load.
on the load.
by the effort.
on the effort.
44.
The shape of the lens of the human eye is varied by the action of the
iris.
pupil.
ciliary muscle.
suspensory ligament.
45.
Which of the following organelles is the site for protein synthesis?
Golgi body
Mitochondrion
Nucleus
Ribosome
46.
Fehling's solution is used in the laboratory to test for the presence of
fats.
starch.
reducing sugars.
fatty acids.
47.
Which of the following quantities have both magnitude and direction?
I. Displacement
II. Speed
III. Momentum
I and II only
I and III only
II and III only
I , II and III
48.
Group of organs which form part of the central nervous system are the
brain, the eyes and the ears.
brain and the spinal cord.
brain, the ears and the spinal cord.
eyes and the spinal cord.
49.
Proteins are usually made up of
sulphur, carbon and nitrogen.
carbon, hydrogen and nitrogen.
carbon, hydrogen and oxygen.
oxygen, carbon and sulphur.
50.
Which of the following characteristics are correct about dairy cattle? They have
I. large udder,
II. long logs,
III. wedged body.
I and II only
I and III only
II and III only
I, II and III
(a)
(i)
What are chromosomes?
(ii)
State three uses of DNA testing in humans.
(b)
(i)
Name three noble gases present in the air.
(ii)
Explain briefly why the noble gases are unreactive under normal conditions.
(c)
(i)
Explain the term post harvest loss as used in crop production.
(ii)
State three precautions farmers take to minimize post harvest losses of cereals in Ghana.
(d)
(i)
What is an inductor as used in electronics?
(ii)
State three applications of solar energy in everyday life.
(a)
Give two examples of each of the following types of crops cultivated in Ghana:
(i)
stem tubers;
(ii)
root tubers;
(iii)
legumes.
(b)
(i)
Explain the term saponification.
(ii)
State the observation that could be made when brine is added to the products of saponification.
(c)
(i)
What is a reflex action?
(ii)
Give three examples of reflex actions in the human body.
(d)
(i)
State the law of conservation of energy.
(ii)
A cement block of mass 25 kg is placed at a height of 10 m above the ground and pushed to fall.
Calculate the velocity of the block just before it touches the ground.
[g = 10 ms-2
(a)
(i)
State three causes of genetic variation in human population.
(ii)
Give two ways in which genetic variation affects organisms.
(b)
(i)
Explain the following terms associated with air movement:
(α)
Trade winds;
(β)
Storm.
(ii)
A storm moves at a speed of 2.0 x 102 ms-1. It blows for 30 minutes at this constant speed. How far would the storm reach.
(c)
(i)
What are radioisotopes?
(ii)
State three uses of radioisotopes.
(d)
State four signs that a cow exhibits just before parturition.
(a)
(i)
What is an organic functional group?
(ii)
Name the functional group of each of the following organic compounds:
(α)
HCOOH;
(β)
CH3CH(0H)CH3;
(γ)
CH3CHCH2.
(b)
(i)
State two methods farmers adopt to control rodents on the farm.
(ii)
Give one way in which each of the following factors is of importance when selecting a site for lettuce cultivation:
(α)
type of soil;
(β)
accessibility to site;
(γ)
topography.
(c)
(i)
What is personal hygiene?
(ii)
State three effects of poor personal hygiene on the individual.
(d)
(i)
What is an electromagnet?
(ii)
State three uses of electromagnets in everyday life.
(a)
(i)
Explain the term brooder house as used in poultry.
(ii)
State three causes of cannibalism in poultry.
(b)
(i)
What is a rainbow?
(ii)
Explain briefly how a rainbow is formed.
(c)
(i)
Name two types of interactions that exist in an ecosystem.
(ii)
State three ways by which energy could be lost in food chain.
(d)
(i)
What is a solvent?
(ii)
A solution was prepared by dissolving 20 g of NaOH in 500 cm3 of distilled water.
Calculate the concentration of the solution in mol/dm3.
[Na = 23.0, O = 16, H = 1.0]
(a)
(i)
Explain briefly how static electricity is produced.
(ii)
Name two other sources of electric power generation apart from hydro and thermal.
(b)
(i)
Name three glands associated with the alimentary canal of humans.
(ii)
List the substance secreted by each of the glands named in (b(i).
(c)
(i)
State one use of each of the following gases:
(α)
hydrogen;
(β)
ammonia.
(ii)
Write a balanced chemical equation for the reaction involving ammonium chloride and calcium hydroxide.
(d)
Name the main nutrient that is responsible for each of the following processes in crop plants:
(i)
root and tuber development;
(ii)
formation of chlorophyll;
(iii)
development of strong stem;
(iv)
growth;
(v)
fruit development.
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