BECE Past Questions & Answers – 1998 (SCIENCE)

August 1998

SCIENCE

SECTIONA OBJECTIVETEST
45minutes

1. Which ofthe following processescould be used to preserve fish foralong time?
A. Boilingonly
B. Saltingonly
C. Sun dryingonly
D. Boilingand sun drying
E. Saltingand sun drying

2. Onehectareis equivalent to
A. 100 m2
B. 1,000 m2
C. 10,000 m2
D. 100,000 m2
E. 1,000,000 m2

3. Which ofthe following causes ringworm?
A. Bacteria
B. Fungi
C. Protozoa
D. Ticks
E. Viruses

4. The central nervous system is madeup ofthe
A. Brain only
B. Spinal cord only
C. Brainand sense organs
D. Brainand spinal cord
E. Spinal cord and sense organs

5. An object weighing60N is dragged throughadistanceof 2m. Calculatethe work done
A. 6 J B. 15 J

C. 30 J D. 120 J E. 1200 J

6. Which ofthe following substances isnecessaryforthe formation of food in plants?
A. Carbon dioxide
B. Nitrogen C. Oxygen D. Starch
E. Sugar

7. Howmanytimes is thesun overheadat the equator within ayear?
A. 1
B. 2
C. 3
D. 4
E. 5

8. Which ofthe followingtakes the shapeof its container?
A. Chalk
B. Charcoal
C. Paper D. Petrol E. Stone

9. A group ofstars form
A. Theuniverse
B. The atmosphere
C. Thesolar system
D. Theplanetarysystem
E. A galaxy

10. Which ofthe followingtypes of soil is good forplant growth?
A. Clay
B. Coursesand
C. Fine sand
D. Loam
E. Silt
11. The equation Carbon(IV) oxide +water→Glucose +Oxygen, represents
A. Breathing
B. Diffusion
C. Photosynthesis
D. Respiration
E. Transpiration

12. Which ofthe following pairs ofdiseases areboth contracted through water?
A. Cholera and dysentery B. Smallpoxand dysentery C. Ringworm and smallpox D. Tuberculosis and cholera
E. Tuberculosis anddysentery

13. The efficiencyof amachine is usuallyless thanonedueto
A. friction B. greasing C. heat
D. the load used
E. the effortapplied

14. Which ofthe following pairs oforganisms aredecomposers?
A. Animals and bacteria
B. Animals and fungi C. Bacteriaand plants D. Bacteriaand fungi E. Plants and fungi

15. A mixtureof engine oiland watercould be best separated by
A. Evaporation
B. Freezing
C. Decantation
D. Heating
E. Addition ofsoap

16. Which ofthe following plants is propagated vegetatively?
A. apple
B. coconut C. pawpaw D. pear
E. sweet potato

17. Which ofthe following diseases istransmitted byclose contact with an infected person?
A. AIDS
B. Bilharzia
C. Elephantiasis
D. Measles
E. Polio

18. Thebreakdown of rocksinto smaller particles isknown as
A. decomposition

B. erosion
C. ploughing
D. terracing
E. weathering

19. Which ofthe following energychanges takes placewhena church bellis tolled?
A. Chemical energyis changed to soundenergy
B. Kinetic energyischanged to sound energy C. Potential energyis changed to sound energy D. Potential energyis changed to kinetic energy E. Thermal energyis changed to sound energy

20. Thedodderon milk bush is an exampleof
A. aplant parasiteonanimal host
B. aplant parasiteon plant host
C. an animal parasite and aplant parasite D. an animal parasiteon ananimal host E. an animal parasiteon aplant host

21. Which ofthe followingfeatures isshown byplants only?
A. Feeding
B. Growth
C. Transpiration D. Reproduction E. Respiration

22. Thestructureof theskinthat removes waste substances isthe
A. fat deposit
B. hair
C. sweat duct D. sweatgland E. sweat pore

23. Which ofthe following statements about light is true?
A. Light is reflected from polishedsurfaces
B. Light travels through opaqueobjects
C. Light passes through planemirrors
D. The angle ofincidenceis between the normal andthe reflected ray
E. Thespeed of light is lessthan that of sound

24. The efficiencyof amachine is given bytheratio
A. load/effort
B. momentum/ velocity
C. distancemoved byeffort/ distancemoved byload
D. work input/ work output

E. mechanical advantage/ velocityratio

25. About 55%of blood is madeup ofthe plasma whilethe remaining45%is madeup of
A. Cells
B. Dissolved food substances
C. Dissolved gases
D. Liquid
E. Salt

26. Which ofthe followingis a structurein theear?
A. Cornea B. Cochlea C. Iris
D. Retina
E. Trachea

27. Brass is analloymadeup of A. Aluminiumand zinc B. Copper and tin
C. Copper and zinc D. Iron and carbon E. Steel and tin

28. Which ofthe following controls the amountof light that enters theeyes?
A. The cornea
B. Theiris C. Thelens D. Thepupil E. The retina

29. A bodywhich moves round the earth is called
A. A meteorite B. A satellite C. A star
D. Jupiter
E. Thesun

30. Which ofthe following processes should becarried out first when separatingamixtureof sand and common salt?
A. crystallization ofthe salt
B. dissolution of thesalt
C. distillation of thesolvent D. filtration ofthe mixture E. sublimation ofthe solute

31. A temperature controllingdevicewhichworks usingthe principles of expansion and contraction is called a……….
A. conductor
B. fuse
C. manometer D. thermometer E. thermostat

32. Kerosene and petrol are obtained from crudeoilby
A. condensation of thecrudeoil B. decantation of thecrudeoil C. distillation of the crudeoil
D. evaporation ofthe crudeoil
E. filtration ofthe crudeoil

33. The fusion of themale and femalegametes is known as: A. copulation
B. evolution
C. fertilization
D. ovulation
E. reproduction

34. Calculate thevoltageacross a wireofresistance4ohms if 3 amperes ofcurrent is passed through it.
A. 0.75 V B. 1.00 V C. 1.33 V D. 7.00 V E. 12.00 V

35. Which ofthe followingflower parts develops into a seed?The
A. ovule
B. pollen grain
C. stamen D. stigma E. style

36. The abilityofan organism to resist infection byproducing antibodies is known as
A. diagnosis B. immunity C. incubation D. inoculation E. vaccination

37. Thepart ofcocoyam which is used in propagation is the
A. bulb

B. corm
C. seed
D. sucker
E. rhizome

38. Which ofthe following diseases affects thelungs?
A. Cholera B. Measles C. Tetanus
D. Tuberculosis
E. Typhoid

39. Gaseous exchangebetween airand blood in the lungs takes placein the
A. alveoli
B. bronchi
C. bronchioles
D. larynx
E. trachea

40. Thestretchedarm ofaJSSstudent holdingastone in thepalmis an exampleof a
A. First class lever
B. Second class lever C. Third class lever D. Fourth class lever E. Fifth class lever

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