KUULCHAT
S.H.S SCIENCE MOCK
OBJECTIVE TEST
1.
Which of the following characters in human is sex - linked ?
A.
Baldness
B.
Skin colour
C.
Eye colour
D.
Sickle cell
2.
Yam is classified as a
A.
Cereal
B.
legume
C.
root tuber
D.
stem tuber
3.
The pollutant which reacts with rain water to produce acid rain is
A.
Oxygen
B.
Nitrogen
C.
Nitrogen dioxide
D.
Carbon monoxide
4.
One criterion used in the classification of domestic rabbit is the
A.
age.
B.
eye colour.
C.
height.
D.
size.
5.
Which of the following food chain is correct
A.
Grass frog ----> grasshopper ----->hawk
B.
Hawk ----> grass ----> grasshopper ---> frog
C.
Grass ----> grasshopper ----> frog ----> hawk
D.
Grasshopper ----> grass ----> frog ----> hawk
6.
Which of the flowering reactions can produce salt and water only?
A.
Na3(aq)+ CH3C00H(aq)
B.
NaOH(aq) + NH3(aq)
C.
NH3(aq) + H2O(l)
D.
NaCl(aq) + AgNO3(aq)
7.
The charges carries in a semi-conductor are
A.
holes only
B.
protons only
C.
holes and electrons
D.
hoes and neutrons
8.
An example of a non-ruminant herbivore is
A.
cow
B.
goat
C.
poultry
D.
rabbit
9.
Galvanized roofing sheets are iron coated with a thin layer of...
A.
gold
B.
plastic
C.
tin
D.
zinc
10.
The concept of natural selection involves the following features expect
A.
survival of the fittest
B.
competition among organism
C.
organisms with the best adapted feature
D.
the use of the concept to classify
11.
Drug addiction is a brain disease because it
A.
is chronic and relapsing
B.
is harmful and result in compulsive drug use
C.
results in the structural change of the brain of the use
D.
makes the brain more sensitive to drugs
12.
The application of lime to solid is to
A.
improve the toxicity of dissolved copper.
B.
improve the soil structure.
C.
increase the availability of calcium ions.
D.
decrease the activities of soil living organism.
13.
Which of the following characteristics is associated with insert - pollination flowers?
A.
They do not secrete nectar
B.
The surface of the stigma are sticky
C.
Their flowers are inconspicuous
D.
Their stamens have long filament
14.
The atomic number of an atomic number of an atom 15 and its mass number is 32.Determine the number of neutrons in the atom.
A.
15
B.
17
C.
32
D.
47
15.
The power rating of an electric machine is 100W. This machine
A.
can do 100J of work in 1 minute
B.
uses electric energy of 100J in 1 hour
C.
uses electric energy of 100J in 1 second
D.
can get heated after working for 199 seconds
16.
The part of the eye on which images on which images are formed is called ?
A.
aqueous humour.
B.
pupil.
C.
lense.
D.
retina.
17.
An example of an abiotic factor in an ecosytem is
A.
altitude
B.
grazing
C.
predation
D.
shading
18.
which of the following gases are major atmospheric pollutants
I. Nitrogen dioxide
II. Oxygen
III. Chlorofluorocation
A.
I and II
B.
I and III only
C.
II and III only
D.
I, II and III only
19.
Which of the following practices is not applicable to vegetable production?
A.
budding
B.
pruning
C.
staking
D.
weeding
20.
Dehorning is importance in animal production because it
A.
control endoparasites.
B.
makes it easy to handle animals.
C.
reduce the food intake of the animals.
D.
makes easy identification of animals.
21.
A stain of oil paint in a cloth can be best be removed by applying
A.
warm water
B.
kerosene
C.
salt solution
D.
soap solution
22.
The following statement are examples of application of biotechnology in agriculture except
A.
crossing animals with desired characteristics
B.
improving upon colour and size of a flower
C.
introduction of foreign genes into livestock
D.
development of pest - resistance crops.
23.
Which of the following structures form the stomach of a goat?
A.
Reticulum, proventriculus, omasum, rumen
B.
Rumen, ventriculus, omasum, abomasum
C.
Rumen, reticulum, abomasum, rectum
D.
Abomasum, rumen, reticulum, omasum
24.
An example of a crop which is usually nursed before transplanting is
A.
okro
B.
carrot
C.
garden egg
D.
water melon
25.
Which of the following statements about the pressure in a liquid is correct?
Pressure
A.
decrease with temperature
B.
is constant
C.
increase with depth
D.
is different at points at the same depth
26.
The molecular formula of an alkene that contains four carbons atoms is
A.
C4 H4
B.
C4 H6
C.
C4 H8
D.
C4 H10
27.
Changes that occur in a girl at puberty includes
I. deepening of voice
II. breast enlargement
III. broadening of hips
Which of the statements above is/are correct?
A.
I only
B.
I and II only
C.
I and III only
D.
II and III only
28.
Which of the following animals is correctly matched with its young one?
A.
Sheep-calf
B.
Rabbit-kitten
C.
Goat-kid
D.
Pig-lamb
29.
Which of the following statements about the dentine of tooth is/are correct?
I. It is beneath the enamel
II. It occupies the largest part of the tooth
III. It contains the crown of the tooth
A.
I only
B.
I and II only
C.
II and III only
D.
I, II and III
30.
An electrical circuit consists of a 2V cell connected to a 5 ohms resistor. Determine the amount of current through the resistor when the circuit is closed.
A.
0.4A
B.
1.0A
C.
2.5A
D.
4.0A
31.
Picking is the method for harvesting
A.
cocoa
B.
cassava
C.
tomato
D.
yam
32.
Which of the following hydrocarbons is an alkyne?
A.
C2H2
B.
C2H4
C.
C3H6
D.
C3H8
33.
A girl of mass 60 kg runs a 100 m race in 10s.Use the information to answer questions 26 and 27
A.
110 ms -1
B.
100 ms -1
C.
50 ms -1
D.
10 ms -1
34.
The fundamental units which combine to give the unite of force are
A.
kilograme, second and ampere
B.
metre, ampere and second
C.
kilograme, metre and second
D.
metre, kelvin and second
35.
The type of soil erosion caused by water run-off exposed land on a gentle slope is referred to as
A.
gulley erosion.
B.
rilly erosion.
C.
sheet erosion.
D.
splash erosion.
36.
The IUPAC names for Na2SO4 is
A.
sodium (II) sulphate.
B.
disodium sulphate.
C.
sodium tetraoxosulphate. (IV)
D.
sodium tetraoxosulphate. ( VI)
37.
The organism that occupies the second trophic level in a food chain is the
A.
primary consumer
B.
secondary consumer
C.
tertiary consumer
D.
producer
38.
Consider the food chain below and use it to answer question 26.
Grass - Earthworm - Frog - Hawk
Which of the organisms is the primary consumer?
A.
Earthworm
B.
Frog
C.
Grass
D.
Hawk
39.
Which of the following characteristics is/are associated with the local breed of fowl? They
I. are slow growers
II. are normally kept on free range
III. have large body mass
A.
I only
B.
I and II only
C.
II and III only
D.
I, II and III
40.
Reflection of light occurs because light travels from medium to another
A.
in the same direction
B.
with the same intensity
C.
with different velocities
D.
obeying the laws of reflection
41.
The gas in the atmosphere that absorbs ultra violet rays is
A.
carbon(IV) oxide
B.
nitrogen
C.
oxygen
D.
ozone
42.
Oil spillage at sea results in
A.
rise in level of water
B.
ozone layer depletion
C.
coastal flooding
D.
death of fishes
43.
An effort of 120N was used to overcome a load of 80N.What is the mechanical advantage of te system?
A.
0.67
B.
1.50
C.
40.00
D.
200.00
44.
The component of white light which is most deviated when light is dispersed is
A.
blue
B.
red
C.
violet
D.
yellow
45.
The pitch of a musical note is related to the note's
A.
loudness
B.
quality
C.
frequency
D.
intensity
46.
A precaution that has to be taken when using a liquid-in-glass thermoter is
A.
holding the bulb in hand when is use
B.
taking the readings quickly before thermal equilibrium is attained
C.
ensuring that the bulb is fully immersed in the surface
D.
ensuring that the bulb touches the vessel containing the surface
47.
Which of the following element is constituent of brass?
A.
Iron
B.
Magnesium
C.
Tin
D.
Zinc
48.
The aim of the ring experiment in the a flowering plant is to demonstrate that
A.
water is transported by the phloem
B.
food substances are transported by the phloem
C.
food substances are formed in the stem
D.
water is excreted from the stem
49.
Diarrhoea could results in death due to
A.
evaporation
B.
dehydration
C.
hypertension
D.
hypotension
50.
An advantage in the use of hard water is
A.
furing of kettle.
B.
blockage of water pipes.
C.
formation of scum.
D.
formation of strong bone
THEORY QUESTIONS
1.
(a) (i) Give three reasons why goats are not normally kept under the intensive system of management.
(ii) Name two diseases that affect rabbits.
(b) (i) Draw the structure of 11Na+.
(ii) State two differences between organic compound and inorganic compounds.
(c) (i) What are decomposer?
(ii) Name three common decomposers in an ecosystem.
(d) (i) Name three structures in the middle ear that help in the transmission of sound waves;
(ii) Mention two ways in which earmuffs are important.
2.
In an experiment to investigate the effect of sugar solution on onion tissues, pieces of epidermal tissues of equal sizes were peeled from inner fleshy leaves of onions. A number of the tissues were placed in six test tubes containing sugar solutions of different concentration. After a few hours the cells of the tissues were observed to be deformed. The percentage of the deformed cells in the various solutions are presented in Table 1 below.
Study the diagram carefully and answer the questions that follow.
(a) Plot a graph of percentage of deformed cells on vertical axis and concentration of sugar solution on the horizontal axis.
(b)Draw and label a diagram to show the appearance of the onion cell in the
(i) 0.5% concentrated solution;
(ii) 2.5% concentrated solution.
(c) Give one reason each for the appearance of the cells draw in (b).
(d)State two environmental factors that could have the same effect on a plant as the concentrated sugar solution.
3.
(a) (i) Define each of the following terms:
(α) compound;
(β) mixture.
(ii) State two differences between an element and a compound.
(b) Explain each of the following terms:
(i) greenhouse effect;
(ii) climate change.
(c)(i) What is electrical rectification?
(ii) Using simple wave diagram, explain half-wave rectification.
(d) State one way in which each of the following environmental factors is important to the life cycle of crops:
(i) rainfall;
(ii) temperature;
(iii) sunshine;
(iv) wind.
4.
(a) An electrical appliance rated 1.5kW, 240V is left running for hours. Calculate the
(i) current drawn;
(ii) electrical energy consumed.
(b) (i) In what two ways does mulching help to conserve the soil?
(ii) Give two examples of mulching materials.
(c) (i) What is pollution?
(ii) List three major atmospheric pollutants.
(d) (i) State two benefits of each of the following minerals to the human body:
(α) potassium;
(β) calcium.
(ii) Name one source of each of the minerals listed in(d)(i).
5.
(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 balance 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 two precautions that must be taken when using a liquid-in-gas thermometer.