1.
Which of the following symptoms is an indication of fungal infection in vegetable nursery?
Wilting of leaves
Swellings of stems
Rotting of stems
Curling of leaves
2.
Which of the following statements about an atoms is correct?
Protons out number electrons in a neutral atom
The L-shell is closest to the nucleus
Neutrons are found in the nucleus
The atomic number is greater than the mass number
3.
A machine is rated 5.30 W. In how many seconds will it do 212.0 J of work?
4.25 s
0.03 s
40.0 s
25.0 s
4.
Carbon (IV) oxide is used to extinguish fires because it
is fully oxidized.
occurs naturally.
is heavier than air.
is a reducing agent.
5.
A deep litter house measuring 45.0 m by 2.2 m is stocked at the rate of one bird per 0.25 m2.
Determine the number of birds stocked.
99 birds
396 birds
180 birds
1584 birds
6.
An athlete weighs 750 N. Determine the athlete's mass.
[g = 10 m s-2]
750 kg
375 kg
75 kg
7500 kg
7.
A child has a fever, runny nose, red sore eyes and a rash inside the mouth. Which of the following diseases is the child likely to be suffering from?
Whooping cough
Measles
Malaria
Poliomyelitis
8.
An example of a leafy vegetable is
cabbage.
bean.
okro.
carrot.
9.
It is compulsory to wear goggles when handling substances that
are poisonous.
are corrosive.
are highly flammable.
emit sparks.
10.
Excess amino acids in the body undergo the process of
digestion.
detoxification.
deamination.
osmosis.
11.
An electric heater rated 60 W is connected to 240 V mains. Determine the current in its filament.
0.25 A
4.00 A
1440.00 A
60.00 A
12.
Which of the following statements about sea breeze is/are correct? It
I. occurs during the night.
II. occurs during the day.
III. blows towards the sea.
II only
I and III only
I only
II and III only
13.
Nutrient required in large quantities by leafy vegetables is
nitrogen.
calcium.
potassium.
phosphorus.
14.
The most effective way of controlling lice on fowls is by
spraying.
dipping.
dusting.
drenching.
15.
In the vacuum flask, the vacuum between the polished walls minimizes heat transfer by
I. conduction.
II. radiation.
III. convection.
Which of the statements above are correct?
I and III only
II and III only
I and II only
I, II and III
16.
Which of the following blood groups in humans does not contain antigen?
A
O
B
AB
17.
Which of the following diseases is caused by vitamin deficiency?
Night blindness
Hypertension
Tuberculosis
Dysentery
18.
The normal period for a human pregnancy is
52 weeks.
32 weeks.
28 weeks
40 weeks
19.
Which of the following pairs of crops is grown for their roots?
Cocoyam and onion
Cassava and carrot
Carrot and shallot
Cocoyam and shallot
20.
The presence of methane and carbon (IV) oxide in the air is the main cause of
global warming.
high and low tides.
movement of air masses.
thunder storm.
21.
Sickle-cell anaemia is an example of
sex-linkage.
blood grouping.
multiple alleles.
partial dominance.
22.
Which of the following statements are correct about semiconductors? They
I. are used to make transistors.
II. do not obey Ohm's law.
III. are group (IV) elements.
I, II and III
I and III only
I and II only
II and III only
23.
An example of a simple machine is
sewing machine.
bicycle.
wheel and axle.
car.
24.
During digestion, rennin in the stomach
provides acidic medium.
emulsifies fat.
coagulates milk protein.
digests carbohydrates,
25.
It is more advantageous to use solar energy than fossil fuel energy because
fossil fuel energy is renewable.
solar energy causes pollution.
fossil fuel produces carbon (IV) oxide.
solar energy is renewable.
26.
The protoplasm of a cell is made up of
cytoplasm and vacuole.
nucleus and vacuole.
cytoplasm and nucleus.
mitochondria and cell membrane.
27.
Which of the following deductions cannot be made from the symbol 612 C?
Mass number of the element
Atomic number of the element
Number of neutrons in the nucleus
Relative atomic mass of the element
28.
The size of the pupil of the eye is controlled by the
iris.
conjunctiva.
cornea.
lens.
29.
Which of the following conditions could cause aflatoxin in groundnuts?
Growing groundnut in poor soils
Infection of groundnut plants by rosette disease
Excessive treatment of harvested pods with chemicals
Storage of pods of groundnut n humid conditions
30.
Crop residue left on farms to conserve soil moisture are referred to as
waste materials.
stable mulch.
hay.
silage
31.
A body is more stable when its centre of gravity is
at the centre.
at its top.
outside the body.
close to the ground.
32.
Ash from burnt plants is widely used in Ghana
as bleaching powder.
for preparing soap.
for preparing salt.
for improving soil texture.
33.
The principle of flotation states that
a floating body displaces its own weight of fluid in which it floats.
a floating body experiences an upward force equal to its weight.
a body immersed in a fluid does not displace the fluid.
the upthrust on a floating body exceeds the body's weight.
34.
Which of the following materials is magnetic?
Platinum
Brass
Cobalt
Aluminium
35.
Biogas is produced from
anaerobic fermentation of organic waste.
aerobic fermentation of organic waste.
aerobic fermentation of inorganic waste.
anaerobic fermentation of inorganic waste.
36.
The practice whereby shade is gradually removed from seedlings before transplanting is referred to as
rogueing.
hardening off.
thinning.
shading off.
37.
The substance formed when carbon (IV) oxide s bubbled through lime water for a long time is
Ca(HCO3)2.
Na2CO3.
NaHCO3.
CaCO3.
38.
One advantage of weaning lambs early is that the
rams are not able to mate with the ewes easily.
ewes come on heat within a short period.
lambs become sexually matured easily.
mothers grow faster.
39.
The manufacture of plastics involves the scientific process known as
crystallization.
fermentation.
vulcanization.
Polymerization.
40.
A solution contains 5.3 g of sodium trioxocarbonate (IV) per dm3. Determine its molarity.
[Na2CO3 = 106]
0.020 mol dm-3
0.050 mol dm-3
0.030 mol dm-3
0.040 mol dm-3
41.
The energy output of a system is 40 J and the efficiency is 60%. Determine the energy input of the system.
50.0 J
66.7 J
24.0 J
75.4 J
42.
Which of the following factors contribute to tidal waves experienced on the sea? The
I. gravitational force of the sun and moon on the sea
II. centripetal force created by the rotation of the earth around its axis
III. occurrence of cyclones
I and II only
I and III only
I, II and III
II and III only
43.
Myopia s an eye defect that makes a sufferer to
feel dizzy continuously
view far away objects but not near objects.
view normally.
view near objects but not far away objects.
44.
A quantity of NaCl was dissolved in 100 cm3 of solution to obtain 0.50 moldm-3 NaCl solution.
Determine the mass of NaCl used.
[NaCl = 58.5]
2.54 g
25.40 g
2.93 g
29.35 g
45.
The weather on earth is determined by changes in temperature, pressure and winds that take place in the
thermosphere.
strastosphere.
mesophere.
troposphere.
46.
A farmer planted 2400 cuttings of cassava of which 85% survived grasscutter invasion.
Determine the number of cassava plants that was destroyed.
360
135
150
204
47.
Which of the following statements about wind are correct?
I. It is an air mass
II. It moves from an area of high pressure to an area of low pressure
III. It moves from an area of low pressure to an area of high pressure
I, II and III
II and III only
I and III only
I and II only
48.
Given that the Avogadro's constant is 6.02 x 1023, determine the number of atoms in 0.001 mol of aluminium metal.
6.02 x 1026
6.02 x 1020
3.01 x 1020
12.30 x 1023
49.
Which of the following combinations of elements do all carbohydrates contain?
Sulphur, carbon, hydrogen and oxygen
Carbon, phosphorus, oxygen and hydrogen
Carbon, hydrogen and nitrogen
Carbon, hydrogen and oxygen
50.
Setts are planting materials used for the cultivation of
ginger.
pineapple.
radish.
yam.
(a)
(i)
Explain the term Binomial System of Nomenclature.
(ii)
State the Binomial System of Nomenclature of the following organisms:
(α)
humans;
(β)
maize.
(iii)
Name two scientists who are associated with the classification of living and non-living things.
(b)
(i)
What is an ionic bond?
(ii)
Write the IUPAC name of each of the following compounds:
(α)
(NH4)2SO4;
(β)
Na2CO3;
(γ)
CuCl2.
(c)
(i)
What is meant by the term single fertilizer?
(ii)
Give two examples of a single fertilizer.
(d)
(i)
Explain briefly how evaporation leads to cooling.
(ii)
List two practical examples where evaporation leads to cooling.
(a)
(i)
State three ways in which mulching aids in the maintenance of soil fertility.
(ii)
Give one reason for undertaking each of the following practices in land preparation:
(α)
hoeing;
(β)
stumping.
(b)
(i)
Explain briefly how sea breeze occurs.
(ii)
Give two reasons why sea breeze occurs.
(c)
(i)
Explain each of the following terms associated with metals:
(α)
malleability;
(β)
soronity;
(γ)
lustre.
(ii)
State two reasons why steel is preferred to iron in building car bodies.
(d)
(i)
Explain the term biodiversity.
(ii)
Give three reasons why biodiversity is important to humans.
(a)
(i)
What are greenhouse gases?
(ii)
Give two examples of greenhouse gases.
(ii)
State two ways by which greenhouse gases are important to humans.
(b)
List four basic components of the mammalian skeleton.
(c)
Give the term for each of the following farm practices:
(i)
heaping soil around the base of growing plant;
(ii)
replanting at spots where seeds failed to germinate;
(iii)
exposing seedlings to harsh weather conditions before transplanting;
(iv)
cutting of excess plant parts;
(v)
reducing overcrowding of seedlings on a nursery.
(d)
(i)
What is radioactivity?
(ii)
State three harmful effects of radioactivity.
(a)
(i)
Distinguish between hay and silage in livestock production.
(ii)
List three sources of protein in poultry feedstuff.
(b)
A body of mass 10 kg is placed at a height of 20 m above the ground. The body was made to fall to a height of 5 m above the ground.
(i)
What energy will the body have at height 5 m above the ground?
(ii)
Calculate the velocity of the body at height 5 m above the ground.
(c)
State:
(i)
three benefits that humans derive from the nitrogen cycle.
(ii)
two human activities that affects the nitrogen cycle.
(d)
(i)
A colourless liquid in the laboratory was suspected to be water.
Describe briefly a test to confirm that the liquid is water.
(ii)
State two stages in the large scale water treatment.
(a)
A 200 cm3 aqueous solution of ammonium chloride with concentration of 0.5 mol dm-3 was prepared in the laboratory:
(i)
calculate the mass of ammonium chloride crystals that will be needed in the preparation.
[N = 14.0, H = 1.0, Cl = 35.5]
(ii)
Name two apparatus that will be needed for the preparation of the solution.
(b)
(i)
Explain the term doping as used in electronics.
(ii)
Name the charge carriers in semi-conductors.
(c)
(i)
Give one location each of the following types of joints in the human body:
(α)
immovable joints;
(β)
movable joints.
(ii)
State one function each of the following respiratory structures in the human body:
(α)
diaphram;
(β)
intercostal muscle;
(γ)
ribs.
(d)
(i)
State three problems that contribute to poor pig production in Ghana.
(ii)
State two management practices that are performed on piglets.
(a)
(i)
What is biotic factor?
(ii)
Give two examples of abiotic factors in an ecosystem.
(b)
(i)
Draw the structural formula of each of the following organic compounds:
(α)
C2H6;
(β)
C2H5OH;
(γ)
CH3COOH.
(ii)
Name each of the organic compounds listed in (i).
(c)
(i)
Name two housing systems of keeping livestock in Ghana.
(ii)
State three factors to consider when selecting a suitable housing system for livestock.
(d)
(i)
Name the instrument used to measure each of the following quantities:
(α)
potential difference;
(β)
electric current.
(ii)
In an electric circuit, the potential difference measured across a resistor is 240 V and the current through the resistor is 24 A.
Determine the resistance of the resistor.
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