KUULCHAT
S.H.S SCIENCE MOCK
OBJECTIVE TEST
1.
A disadvantage of practicing mixed cropping is the
A.
destruction of virgin forests.
B.
competition for soil nutrients among crops.
C.
establishment of weeds among crops.
D.
high rate of disease spread.
2.
A solution of volume 500 cm3 contains 9.80 g 0f H2SO4.
Determine its molar concentration.
[S=32, O=16, H=1]
A.
0.10 M
B.
0.20 M
C.
0.40 M
D.
0.50 M
3.
It is compulsory to wear goggles when handling substances that
A.
are poisonous.
B.
are corrosive.
C.
are highly flammable.
D.
emit sparks.
4.
The role of oxygen in seed germination is to
A.
provide energy for cell division and growth.
B.
soften the seed coat.
C.
dissolve the stored food.
D.
transport food substances to site of growth.
5.
Pruning is a cultural practice undertaken in vegetable production to
A.
provide shade and protection
B.
remove diseased branches and leaves from plant
C.
prevent plants from falling
D.
prevent exposure of plants to rain, wind and sun
6.
A car of mass 1600 kg moves with a velocity of 80 ms-1.
Determine the momentum of the car.
A.
1.28 x 106 kg ms-1
B.
3.2 x 104 kg ms-1
C.
6.4 x 104 kg ms-1
D.
1.28 x 105 kg ms-1
7.
Which of the following diseases is common in the plant nursery?
A.
Damping off
B.
Leaf spot
C.
Rosette
D.
Smut
8.
The principle of flotation states that
A.
a floating body displaces its own weight of fluid in which it floats.
B.
a floating body experiences an upward force equal to its weight.
C.
a body immersed in a fluid does not displace the fluid.
D.
the upthrust on a floating body exceeds the body's weight.
9.
The commonest method for propagating crops in Ghana is by
A.
budding
B.
root cutting
C.
seeds
D.
stem cutting
10.
Galvanized roofing sheets are iron coated with a thin layer of
A.
gold
B.
plastic
C.
tin
D.
zinc
11.
Sedimentary rocks are not resistant to weathering because, they
A.
are formed from molten matter.
B.
formed from other rocks.
C.
have lines of weakness between mineral aggregates.
D.
have lines of weakness between strata.
12.
An electric kettle rated 2 kW is operated by 240 V mains for 20 minutes.
Use this information to answer the question below
Determine the current drawn from the mains
A.
0.1 A
B.
1.2 A
C.
4.2 A
D.
8.3 A
13.
Diarrhoea could results in death due to
A.
evaporation
B.
dehydration
C.
hypertension
D.
hypotension
14.
An athlete runs an 800 m race in 4 minutes and 40 seconds. Calculate the average speed of the athlete.
A.
2.86 m-1
B.
3.33 m-1
C.
4.25 m-1
D.
6.28 m-1
15.
Which of the following diseases is caused by vitamin deficiency?
A.
Night blindness
B.
Hypertension
C.
Tuberculosis
D.
Dysentery
16.
Which of the following statements about small scale industry is correct? It
A.
makes use of advanced technology.
B.
is always capital intensive.
C.
is always in rural areas.
D.
operates with minimum input of materials.
17.
Which of the following characters in human is sex - linked ?
A.
Baldness
B.
Skin colour
C.
Eye colour
D.
Sickle cell
18.
Which of the following pairs of crops is grown for their roots?
A.
Cocoyam and onion
B.
Cassava and carrot
C.
Carrot and shallot
D.
Cocoyam and shallot
19.
Fertilization in flowering plants is known as double because
A.
the female nucleus is double penetrated by one male gamete while the other regenerate
B.
two cotyledons are formed.
C.
two embryo nucleus are formed.
D.
one male gamete fertilizes the egg while the second fuses with the polar nuclei.
20.
Cassava mosaic is spread by an insect called
A.
capsid
B.
mealy bug
C.
moth
D.
whitefly
21.
Breeds of fowl which are reared for the purpose of producing meat are called
A.
broilers.
B.
chicks.
C.
hens.
D.
layers.
22.
An example of inorganic fertilizer is
A.
compost.
B.
farmyard manure.
C.
green manure.
D.
urea.
23.
Metals are normally used as electrical wires because they are
A.
brittle.
B.
ductile.
C.
elastic.
D.
malleable.
24.
The pitch of a musical note is related to the note's
A.
loudness
B.
quality
C.
frequency
D.
intensity
25.
A balloon inflated with hydrogen gas will rise in the air because
A.
it is weightless
B.
there is no upthrust on it
C.
the upthrust on it is more than its weight
D.
the air will carry it upward
26.
Pricking of yam is done to
A.
prevent vegetative growth.
B.
encourage development of clusters of tubers.
C.
prevent hardening of tubers.
D.
prevent disease infestation.
27.
The main function of ileum in mammals is
A.
digestion and assimilation.
B.
assimilation and absorption.
C.
digestion and absorption.
D.
ingestion and digestion.
28.
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?
A.
Whooping cough
B.
Measles
C.
Malaria
D.
Poliomyelitis
29.
The main constituent of natural gas is
A.
ethane.
B.
helium.
C.
methane.
D.
nitrogen.
30.
Fifteen children from a class of 45 roll tongues. What percentage of the class are rollers?
A.
25.3%
B.
33.3%
C.
35.3%
D.
75.3%
31.
Which of the following organelles is the site for protein synthesis?
A.
Golgi body
B.
Mitochondrion
C.
Nucleus
D.
Ribosome
32.
Which device is used to measure the population density of a plant species ?
A.
Pooter
B.
Quadrat
C.
Sweep net
D.
Wire mesh
33.
The molecular formula of an alkene that contains four carbons atoms is
A.
C4 H4
B.
C4 H6
C.
C4 H8
D.
C4 H10
34.
An electric appliance is rated 60 W. This means the appliance
A.
runs on a main voltage of 60 V.
B.
uses a current of 60 A per second.
C.
uses 60 J of energy every second.
D.
has a resistance of 60 W.
35.
The IUPAC name of the compound Cu(NO3)2 is
A.
copper (II) trioxonitrate (V)
B.
copper (I) trioxonitrate (V)
C.
copper trioxonitrate (IV)
D.
copper (IV) trioxonitrate (III)
36.
Determine the volume of water required to change the concentration of 100 cm3 HCl from 0.5 mol dm-3 to 0.1 mol dm-3.
A.
100 cm3
B.
200 cm3
C.
400 cm3
D.
500 cm3
37.
Which of the following radiations are particles?
I. Alpha
II. Beta
III. Gamma
A.
I and II only
B.
I and III only
C.
II and III only
D.
I, II and III
38.
For grafting to be successful, the scion and the stock must be of the same
A.
size.
B.
length.
C.
diameter.
D.
texture.
39.
The elements in bronze are
A.
copper and zinc.
B.
copper and lead.
C.
copper and nickel.
D.
copper and tin.
40.
The diagram below illustrates a ray of light incident on a plane mirror MM'.
The value of α is
A.
40°
B.
50°
C.
80°
D.
100°
41.
Which of the following quantities have both magnitude and direction?
I. Displacement
II. Speed
III. Momentum
A.
I and II only
B.
I and III only
C.
II and III only
D.
I , II and III
42.
The pigment in the skin responsible for skin colouration is
A.
xanthophyll.
B.
melanin.
C.
velamin.
D.
carotene
43.
Setts are planting materials used for the cultivation of
A.
ginger.
B.
pineapple.
C.
radish.
D.
yam.
44.
The earthworm is important to the farmer because it
A.
improves soil structure.
B.
improves soil texture.
C.
destroys soil pathogen.
D.
reduces amount of air in the soil.
45.
Members of the same species living in the same place at the same time make up the
A.
trophic level.
B.
ecosystem.
C.
community.
D.
population.
46.
The management practice which makes the transport of farm animals easy is
A.
castration.
B.
dehorning.
C.
identification.
D.
quarantine.
47.
Calculate the number of moles in 5.85 of NaCl.
[Na = 23; Cl = 35.5]
A.
0.01
B.
0.10
C.
1.00
D.
10.00
48.
A respiratory surface must have
I. rich supply of blood capillaries.
II. thin wall.
III. large surface area.
Which of the statements above is/are correct?
A.
I only
B.
I and II only
C.
II and III only
D.
I, II and III
49.
The area of occupied by a box placed on a table is 2.0 m2. If the box exerts a pressure of 50 Pa 0n the table, calculate the mass of the box.
[g= 10m-2]
A.
2.5 kg
B.
10.0 kg
C.
100.0 kg
D.
1000.0 kg
50.
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.
A.
II only
B.
I and III only
C.
I only
D.
II and III only
THEORY QUESTIONS
1.
(a)
(i)
State the method of preparing a salt from each of the following pairs of substances:
(α)
dilute tetraoxosulphate (VI) acid and dilute sodium hydroxide;
(β)
lead (II) trioxonitrate (V) and sodium chloride.
(ii)
Write a balanced chemical equation for the reaction between lead (II) trioxonitrate (V) and sodium chloride.
(b)
(i)
What are tidal waves?
(ii)
State four ways in which water could be contaminated.
(c)
(i)
State two ways in which legumes are important in crop production.
(ii)
State three advantages of crop rotation.
(d)
(i)
State three qualities of a good thermometric liquid;
(ii)
Give one precaution that must be taken when using a liquid-in-glass thermometer.
2.
(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]
3.
(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.
4.
(a)
Describe briefly the process of seed germination.
(b)
Outline the procedure for nursing lettuce seeds.
(c)
(i)
Explain how a p-n junction diode is formed
(ii)
Describe how a p-n junction diode can be forward biased.
(d)
The following table gives information about some elements
Study the table carefully and answer the questions that follow
| Element | Number of Protons | Number of Neutrons | Number of Electrons |
| A | 8 | 8 | 10 |
| B | 17 | 18 | 18 |
| C | 12 | 12 | 10 |
| D | 11 | 12 | 10 |
| E | 17 | 20 | 17 |
(i)
Which of the element(s) is/are positive ion(s)?
(ii)
Which of the element(s) is/are negative ion(s)?
(iii)
Which of the element(s) form(s) isotopes?
5.
(a)
(i)
What is meant by the term modern technology?
(ii)
Give three reasons for the lack of improvement of technology in Ghana?
(b)
(i)
Explain the term convection as used in heat energy.
(ii)
Explain why convection cannot take place in solids.
(c)
(i)
Differentiate between soil erosion and soil depletion.
(ii)
Give three effects of soil erosion on agricultural productivity.
(d)
(i)
List three causes of indigestion in humans.
(ii)
State two ways of preventing tooth decay.
6.
(a)
(i)
State the law of floatation.
(ii)
State three characteristics of the image formed by a plane mirror.
(b)
Give one reason for undertaking each of the following practices in animal production:
(i)
providing feed and water in clean containers;
(ii)
ensuring a routine deworming programme;
(iii)
practicing rotational grazing;
(iv)
avoiding overstocking of animals;
(v)
preventing sheep from feeding on wet pastures.
(c)
Write a balanced chemical equation for the reaction between:
(i)
water and sodium;
(ii)
water and magnesium
(d)
State four human activities that contribute to global warming.