2019 NOV/DEC INTEGRATED SCIENCE TRIAL

MR GABRIEL EXAMS TEAM
       +233271490087

INTEGRATED SCIENCE
SCHEME OF EXAMINATION
There will be three papers, Papers 1, 2 and 3 all of which must be taken. Papers 1 and 2 will be a
composite paper to be taken at one sitting.
PAPER 1: Will consist of fifty multiple-choice objective questions all of which must be
answered within 1 hour for 50 marks.
PAPER 2: Will consist of six essay-type questions. Candidates will be required to answer four
questions within 1 hour 30 minutes for 20 marks each.
PAPER 3: Will consist of four questions on test of practical work. Candidates will be required
to answer all the questions within 2 hours for 60 marks.

SAMPLE QUESTIONS
PAPER 1  (OBJECTIVE TEST)
1. The pH of water is
A. 2.
B. 5.
C. 7.
D. 14.
2. One characteristic feature of Kingdom Animalia is the possession of
A. celluse cell wall.
B. nervous system.
C. starch granules.
D. chlorophyll.
3. Which of the following statements explains the occurrence of large number of carbon
compounds? Carbon
A. is present in all living things
B. atom is tetravalent element
C. compounds dissolve readily in organic solvents
D. compounds burn readily in air
4. The instrument used to measure diameter of a thin wire is
A. thread and rule.
B. engineer's callipers.
C. micrometer screw gauge.
D. spherometer.
5. A species X has 16 protons, 17 neutrons and 18 electrons. X must be
A. neutral atom equal of a metal.
B. a cation of two positive charges.
C. an anion of two negative charges.
D. an anion of one negative charge.
6. The main effect of diseases on crops is
A. reduction in photosynthesis.
B. inhability of roots to absorb water.
C. shortening of internodes.
D. reduction in the yield of produce.
7. A car fuse is marked 15A and operates on a 12 volt battery. Determine the resistance of
the fuse wire.
A. 0.8 ohms
B. 1.3 ohms
C. 3.00 ohms
D. 27.00 ohms
8. Rabbits are housed in a
A. pen.
B. hutch.
C. kraal.
D. sty.
9. Which of the following parts of a mammalian skin protects the tissues beneath from
mechanical injury?
A. Dermis
B. Cornified layer
C. Granular layer
D. Malphigian layer
10. An element which can be considered as a semi-metal is
A. argon.
B. carbon.
C. silicon.
D. sodium.
11. Respiration is essential to life since
A. food is oxidised.
B. oxygen is used up.
C. waste products are eliminated.
D. energy is released.
12. Which of the following statements about the importance of mulching are correct?
I. Prevention of the surface of soil from caking
II. Conservation of moisture
III. Washing away of dissolved nutrients
IV. Keeping the soil cool
A. I and II only
B. III and IV only
C. I, II and III only
D. I, II and IV only
13. A pulley system is used to lift a load of 300N. If the effort applied is 150N, determine the
mechanical advantage of the system.
A. 0.5
B. 2.0
C. 150
D. 450
14. The easiest method of fertilizer application is
A. band application.
B. broadcasting.
C. ring application.
D. spraying.
15. Which of the following characteristic features are associated with insect-pollinated
flower?
I. Brightly coloured petals
II. Large petals
III. Horny guider
IV. Pendulous stamen
A. I and II only
B. III and IV only
C. I, II and III only
D. I, II and IV only

PAPER 2 ((ESSAY))

1. (a) (i) What is a transistor?
(ii) Explain how a transistor behaves as a switch.
[5 marks]
(b) (i) Explain the term poultry.
(ii) State four reasons for keeping poultry.
[6 marks]
(c) Explain the following terms:
(i) population;
(ii) species.
[5 marks]
(d) (i) What are x-rays?
(ii) State two dangers associated with over exposure to x-rays.
[4marks]
2. (a) (i) What is plant tissue culture?
(ii) State three advantages of propagating a plant by tissue culture.
[5 marks]
(b) (i) Explain the term parturition as applied to animal production.
(ii) State three signs shown by an animal when parturition is about to occur.
[5 marks]
(c) Draw and label a ray diagram to show how the image of a point object is seen in a
plane mirror. [5 marks]
(d) A piece of zinc metal was placed in a beaker containing dilute hydrochloric acid.
(i) Write a balanced chemical equation for the reaction that took place.
(ii) If 10.4g of zinc was placed in the hydrochloric acid, determine the
amount, in moles of hydrochloric acid, that would be required to react with the
zinc completely.
[Zn = 65.4, H = 1, Cl = 35.5]
[5 marks]
3. (a) Explain the following terms as applied to sound waves:
(i) frequency;
(ii) loudness;
(iii) pitch.
[6 marks]
(b) (i) What is crop rotation?
(ii) State two advantages of crop rotation.
[4 marks]
(c) (i) List three kingdoms used in the classification
of living things.
(ii) State two reasons for classification of living things.
[5 marks]
(d) (i) Explain briefly how each of the following processes occurs:
(i) melting of a solid;
(ii) condensation of a gas.
[5 marks]
PAPER 3  (TEST OF PRACTICAL WORK)
1. A stock solution of 1M HCl was prepared by dissolving 3.65 g of HCl in 100 cm3 of
distilled water. 5 cm3 of the stock solution was put into each of the five measuring
cylinders labelled V1, V2 V3, V4, and V5 and diluted with different amounts of distilled
water to the volumes shown in the diagram below.

(a) (i) Read and record the volumes of the solution in each of the measuring
cylinders labelled V1, V2 V3, V4, andV5 respectively.
(ii) Determine the volume of water used to dilute 1M HCl in each of the
measuring cylinders. [ 8 marks]
(b) Calculate the concentration of solution in measuring cylinder V4 in
(i) mol dm-3
(ii) g dm-3
[6 marks]
2. The Figures F and G below illustrate organisms associated with farm animals.
Study the figures carefully and answer the questions that follow

(a) Identify organisms F and G. [ 2 marks]
(b) Which group of parasites do organisms F and G belong to?
[2 marks]
(c) State two symptoms each of the infestation of organisms F and G on the
animals they inhabit.
[4 marks]
(d) Briefly explain two common methods each of controlling organisms F and
G.  [8 marks]

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