KUULCHAT
S.H.S SCIENCE MOCK
OBJECTIVE TEST
1.
Alkanoic acid contain
A.
carbon atoms and hydrogen atoms only
B.
carbon atom and oxygen atoms only
C.
carbon atoms, hydrogen atom and oxygen atoms only
D.
carbon atoms, hydrogen atoms and nitrogen atoms only
2.
An electrical bulb is rated 20W. This means that when it is in use, the...
A.
energy required to light it if outages is 20J
B.
amount of energy consumed daily is 20J
C.
word done in a day is 20J
D.
amount of energy consumed every hour is 20J
3.
Release of dust into the atmosphere
I. cuts down photosynthesis.
II. cause respiratory disease.
III. reduces visibility
Which of the following above is/are correct?
A.
I only
B.
I and II only
C.
I and III only
D.
I,II and III
4.
Which of the following crops is not a root vegetable?
A.
Carrot
B.
Ginger
C.
Lettuce
D.
Onion
5.
An example of a non-ruminant herbivore is
A.
cow
B.
goat
C.
poultry
D.
rabbit
6.
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
7.
Which of the following animals is correctly matched with its young one?
A.
Sheep-calf
B.
Rabbit-kitten
C.
Goat-kid
D.
Pig-lamb
8.
A different between an atom and an ion is that an atom
A.
is electrically charged whilst an ion is neutral
B.
has protons whilst an ion has no protons
C.
can move about in solution whilst ions cannot move in solution
D.
cannot conduct electricity whilst an ion conduct electricity
9.
Which of the following observation is a direct consequence of thermal expansion?
Which of the following observation is a direct consequence of thermal expansion?
I. Cracks in concrete slaps
II. Sagging of electric cable
III. Buckling of railway line
IV. Crackling noise from roofing sheets
A.
I and II only
B.
I,II and IV only
C.
II, III and IV only
D.
I, II, III and IV
10.
The motion of gas particles is an example of a
A.
circular motion
B.
rectilinear motion
C.
rational motion
D.
random motion
11.
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
12.
The area of occupied by a box placed on a table is 2.0m. If the box exerts a pressure of 50 Pa 0n the table, calculate the mass of the box. [g= 10m-2]
A.
2.5kg
B.
10.0kg
C.
100.0kg
D.
1000.0kg
13.
The gas in the atmosphere that absorbs ultra violet rays is
A.
carbon(IV) oxide
B.
nitrogen
C.
oxygen
D.
ozone
14.
The diagram below illustrates the motor neurone. Study it carefully and answer the question below.
Which part of the neurone is a point of contact with a gland?
A.
I
B.
IV
C.
VI
D.
VII
15.
Yam is classified as a
A.
Cereal
B.
legume
C.
root tuber
D.
stem tuber
16.
Which of the following practices is a method of conserving the environment?
A.
use of pesticides
B.
overgrazing
C.
mining
D.
afforestation
17.
A common disease that affect sheep is
A.
anthrax
B.
aspergillosis
C.
coccidiosis
D.
gumboro
18.
A molar solution of KHSO4 contains
A.
80g 0f KHSO4 in 1dm3 of solution
B.
100g of KHSO4 in 100cm3 of solution
C.
120g of KHSO4 in 100cm3 of solution
D.
126g of KHSO4 in 1dm3 of solution
19.
Which of the following characters in human is sex - linked ?
A.
Baldness
B.
Skin colour
C.
Eye colour
D.
Sickle cell
20.
Which of the following instruments is most suitable for measuring the thickness of razor blade?
A.
Metre rule
B.
Micrometer screw gauge
C.
Vernier callipers
D.
Surveyor's tape
21.
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
22.
A rigid bar that is supported at a point which turning occurs is
A.
lever.
B.
pulley.
C.
wheel and axle.
D.
inclined plane.
23.
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
24.
In testing for starch in green leaf, the leaf is boiled in ethanol so as to
A.
Kill the leaf cells.
B.
dissolve the chorophyll.
C.
enable iodine solution to penetrate the tissue
D.
stop all chemical reaction in the cells
25.
A test for the presence of lipids in food substances requires...
A.
Sudan III
B.
Benedict's solution
C.
Fehling's solution
D.
Million's reagent
26.
The reason for adding sulphuric acid during the preparation of esters is to
A.
speed up the rate of reaction
B.
act as reducing agent
C.
decompose the products
D.
dehydrate the reaction
27.
The radiation with the highest penetration power is
A.
x-ray
B.
gamma ray
C.
alpha particle
D.
beta particles
28.
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
29.
The hair on the skin of pig is known as
A.
bristle
B.
brush
C.
feather
D.
fur
30.
An advantage of the use of hay over silage is that hay
A.
ensure the availability of feed all year.
B.
has laxative effect.
C.
has higher proportion of leaves, water and nutrients.
D.
is more palatable to livestock
31.
Ethanol may be preferred to mercury as a thermometric liquid because
A.
ethanol is colourless
B.
mercury has a higher specific heat capacity
C.
mercury wet glass.
D.
ethanol has a far lower freezing point
32.
A sample of KOH weighs 5.6g. Calculate the number of moles in the sample.
[K = 39; O = 16; H = 1]
A.
0.1
B.
0.2
C.
1.0
D.
5.6
33.
Which of the following mammals has a diastema?
A.
dog
B.
goat
C.
pig
D.
rat
34.
Oil spillage at sea results in
A.
rise in level of water
B.
ozone layer depletion
C.
coastal flooding
D.
death of fishes
35.
Which of the following solvent could best be used to to remove ink stain in a dress
A.
Ethanol
B.
Kerosene
C.
Milk
D.
Petrol
36.
which of the following statement about breathing in human is correct?
A.
The same amount of nitrogen, more carbon dioxide and less oxygen is breath out than breathed in
B.
The same amount of nitrogen, less carbon dioxide and less oxygen is breathed out than breathed in
C.
More nitrogen, more carbon dioxide and less oxygen is breathed out than breathed in
D.
same amount of nitrogen, more carbon dioxide and more oxygen is breathed in than is breathed out.
37.
A gas soluble in water and lighter than air can be collected in the laboratory by
A.
upward displacement of air
B.
downward displacement of water
C.
downward displacement of air
D.
upward displacement of water
38.
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
39.
In flies, the allele for grey body colour is dominant and black body is recessive.Two grey-bodies flies mated and they produced 75 grey-bodies flies and 25 black-bodies flies. The cross described is most likely to be
A.
GG x GG
B.
GG x Gg
C.
Gg x GG
D.
Gg x Gg
40.
The process in the hydrological cycle which results in water vapour condensing and fallimg on the earth surface is
A.
evaporation
B.
infiltration
C.
precipitation
D.
sublimation
41.
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
42.
The component of white light which is most deviated when light is dispersed is
A.
blue
B.
red
C.
violet
D.
yellow
43.
An underground horizontal stem with nodes, internodes and scaly leaves is a
A.
bulb
B.
corm
C.
rhizome
D.
sucker
44.
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.
45.
Which of the following practices is not applicable to vegetable production?
A.
budding
B.
pruning
C.
staking
D.
weeding
46.
A gene is described as recessive when it
A.
expresses itself occasionally in certain generation
B.
does not express itself in any generation
C.
always expresses itself in every generation
D.
does not contribute to the survival of the organism
47.
Exhaled air may readily put off a lighted candle it contains high levels of
A.
carbon dioxide and moisture
B.
oxygen and moisture
C.
nitrogen and heat
D.
oxygen and nitrogen
48.
The image formed by a plane mirror is
A.
magnified.
B.
real.
C.
laterally inverted.
D.
diminished.
49.
The final stage of the purification of water for town supply is
A.
addition of chlorine
B.
flocculation
C.
aeration
D.
sedimentation
50.
Which of the following nutrients is not needed by crops in large quantity?
A.
calcium
B.
iron
C.
nitrogen
D.
phosphorus
THEORY QUESTIONS
1.
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.
2.
(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.
3.
(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.
4.
(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.
5.
(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).