Science BECE likely Examination Questions and answers
Science BECE likely examination questions and answers made simple
Answer all Questions1. Which of the following human activities maintain the carbon cycle?
A. Bush burning
B. Felling of trees
C. Release of fumes from factories
D. Replanting of trees felled as timber
Answer:Replanting of trees felled as timber
2. What is the colour of the neutral wire in a three-pin plug?
A. Blue
B. Brown
C. Green
D. Yellow
Answer: Blue
3. The number of elements in the compound Ca(OH)2 is
A. 2
B. 3
C. 4
D. 5
Answer: 3
4. One difference between metals and non-metals is that metals
A. Have low density
B. Are not malleable
C. Have luster
D. Have low melting points
Answer: Have luster
5. A mixture of sugar and water could be separated by
A. Decantation
B. Evaporation
C. Filtration
D. Sublimation
Answer: Evaporation
6. Which of the following agencies is responsible for providing information on the weather and climate conditions of an area?
A. Animal husbandry department
B. Extension services department
C. Information services department
D. Meteorological services department
Answer: Meteorological services department
7. Day and night occur because the earth
A. Moves around the sun
B. Moves from east to west
C. Moves round the moon
D. Rotate on its axis
Bece 2022. Science like examination
Answer: Rotate on its axis
8. An atom of element Chlorine has atomic number
A. 13
B. 14
C. 17
D. 40
Answer: 17
9. The dissolution of sugar in water is a physical change because the sugar
A . Cannot be seen in water
B. Cannot be separated from the water
C. Can be separated from the water
D. Can be tested in the water
Answer: Can be separated from the water
10. The systematic name of the compound FeS is
A. Iron (I) sulphide
B. Iron (II) sulphide
C. Iron (III) sulphide
D. Iron (IV) sulphide
Answer: . Iron (II) sulphide
11. A metal block has a mass of 0.1kg. Calculate its volume if the density is 1.0kgm-3
A. 0.01m3
B. 0.01m-3
C. 1.00m3
D. 10.00m3
Answer: 0.01m-3
12. Why of the following processes are conversion of the state of matter is correct?
A. Gas liquid solid
B. Solid gas liquid
C. Solid liquid gas
D. Gas liquid solid
Answer. Gas, liquid, solid
13. Which of the following gases is involved in the rusting of iron?
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Carbon dioxide
Answer: Oxygen
14. Metals that are used to make ornaments have low
A. Conductivity
B. Ductility
C. Malleability
D. Reactivity
Answer: Reactivity
15. The charge of Sulphur in the compound SO2 is
A. -2
B. +2
C. -4
D. +4
Answer: -2
16. Which of the following substances is a solid – gas mixture?
A. Lather
B. Bronze
C. Steel
D. Smoke
Answer: Smoke
17. Which of the following compounds does not contain carbon?
A. Petrol
B. Palm oil
C. Water
D. Alcohol
Answer: Water.
18. Which of the following properties are true about all matter except
Matter has
A. Volume and fixed shape
B. Volume and mass
C. Mass and indefinite
D. Density and fixed shape
Answer: Volume and mass
19. A metal that is used as thermometric liquid is
A. Aluminum
B. Copper
C. Mercury
D. Silver
Answer: Mercury
20. The instrument used to measure temperature is the
A Thermometer
B. Barometer
C. Manometer
D. Ammeter
Answer: Thermometer
21. A positively charged ion is called
A. Anion
B. Cation
C. Neutron
D. Proton
Answer: Cation
22. How many days does it take the moon to go completely round the earth
A. 1 day
B. 28 days
C. 30 days
D. 356 days
Answer: 30 days
23. In electrical circuits, the components that protects appliances against very high current is the
A. Capacitor
B. Fuse
C. Resistor
D. Switch
Answer: Fuse
24. The chemical formula for Aluminum oxide is represented as Alx Oy. The values of x and y are respectively
A. 2 and 3
B. 1 and 3
C. 3 and 1
D. 3 and 2
Answer: 2 and 3
25. The method of purification of water that produces water containing very little impurities is
A. Boiling
B. Chlorination
C Distillation
D. Filtration
Answer:: Distillation
26. Crystals of sugar were obtained when a hot solution of sugar was cooled to room temperature. What conclusion can be drawn from this observation?
A. Sugar does not dissolve in cold water
B. Sugar does not dissolve in hot water
C. Sugar dissolves less in hot water than cold water
D. Sugar dissolves more in hot water than cold water
Bece 2022. Science like examination
Answer: Sugar dissolves less in hot water than cold water
27. If a mixture of water and powdered charcoal is allowed to stand for a long time, the charcoal
A. rises to the top
B. dissolves completely in the water
C. continues to remain suspended in the water
D. settles at the bottom
Answer. Settle at the bottom
Science BECE likely Examination Questions and answers
28. When elements combine to form a compound, the
A. constituents can be separated by a physical process
B. volume of the compound is the same C. Substance formed will be a new substance
D. reaction does not involve a heat change
Answer: Substance formed will be a new substance
29. Which of the following statements about the scientific method is/are correct? It provides
I. Logical procedure for arriving at a knowledge
II. Knowledge that can be verified
III. Knowledge that can never be changed
A. I and II
B. I only
C. I and III only
D. II and III only
Answer: I and II only
30. The joule is the S.I. unit for
A. energy
B. force
C. power
D. pressure
31. Which of the following elements is a semi-metal?
A. carbon
B. nitrogen
C. silicon
D. sodium
Answer: Silicon
32. Solid non – metals normally break into pieces when hammered because they are
A. brittle
B. ductile
C. lustrous
D. malleable.
Answer:: Brittle
33. Elements that could easily lose electrons to form cations are. A. metals
B. non– metals
C. metalloids
D. noble gases
Answer: metals
34. Which of the following processes involve a change in state of matter form liquid to solid
A. evaporation
B. freezing
C. melting
D. sublimation
Answer: Freezing
35. The sub – atomic particle with zero charge in the nucleus of an atom is called
A. proton
B. ion
C. electron
D. neutron
Answer: Neuron
36. The importance of fuse in an electrical circuit is to
A.regulate the voltage
B.minimize the use of current
C. prevent damage to electrical appliances
D. alter the flow of current in the current
Answer: prevent damage to electrical appliances
37. An example of chemical compound is
A. aluminum
B. ammonia
C. oxygen
D. silicon
Answer: Ammonia
38. When a solid – liquid mixture is filtered, the liquid that separates out into the container is called
A. filtrate
B. residue
C. sediment
D. solution
Bece 2022. Science like examination
Answer: Filtrate
39. In which of the following processes is carbon absorbed from the atmosphere?
A. respiration
B. burning
C. decomposition
D. photosynthesis
Answer: photosynthesis
40. Which of the following statements is not true about the wet seasons?
A. Bush fires are common
B. Trees and weeds grow fast
C. Small animals increase in number
D. The weather is generally cool
Answer: Bush fires are common
SECTION
40 MARKS
Answer question all Questions in this section. Bece 2022 science likely examination questions and answers
1. a. The diagram below is an illustration of an experimental setup for separating a mixture of water and alcohol. Study the diagram carefully and answer the questions that follow.
1a.i.State the method of separation shown in the setup above (1 mark)
Ii. Identifythe parts labeled I, II, III, and IV (5 mark)
Iii. Give the function of II and III (2 marks)
IV. What physical processes are involved in the method of separating (2 marks)
V. State the physical property which makes it possible to separate the water and alcohol. (2 marks)
Vi.State three physical characteristics of part labeled IV (3marks)
Solution to question1a
I. Separation method
Simpledistilation
Ii. Names of labeled parts
I- retort stand
II- thermometer
III- condenser
IV- distilate
Iii.functions of;
II- thermometer– helps to detect the boiling of the liquids
Iii- condenser– changes water vapour to liquid
IV. Physical processes involved
– Evaporation
– condensation
V. Physical property making it possible to separate the mixtures
Base on the fact that the liquids have different boiling points.
b. The diagrams below are illustrations of some farm tools. Study them carefully and use them to answer the questions that follow:
I. Identify each of the tools labelled A, B, C, D and E. (5marks)
Ii State one use of each of the tools (5marks)
Iiii..Describe briefly how tool A is used (2marks)
Iv. Give three ways of maintaining farming tools (3 marks)
C. Study the diagram below carefully and answer the questions that below:
I. Name the organ above (1mark)
Ii. Identify the parts labeled I, II, III, IV and V (5marks)
Iii. Name one function of the parts II, III, IV and V (4marks)
SECTION B
(60 Marks)
Answer four questions only from this section. Bece 2022 science
Q2. a. Write the systematic name for each of the following compound
I. H2O likely examination questions and answers
Ii. MgO
Iii. CaO
v CaCl2 (4marks)
b. Name the instrument used in measuring the following
I. Length of a rope
Ii. Mass of a stone
Iii. Temperature of a liquid
Iv Volume of a liquid (4 marks)
C. i. Differentiate between solute and solvent (3 marks)
d. i. State four stages in the carbon cycle (4 marks)
3. a. i. define an alloy. (2 mark)
ii. State the composition of each of the following alloys:
I. Brass
Ii. Steel
Iii. Bronze (3 marks)
b. i. Explain the term soil profile (2 marks)
ii. State three importance of studying the soil profile (3 marks)
c. i. Name five weather measuring instruments (2 marks)
4. State one principles of crop rotation (4 marks)
b. Mention the suitable solvent for each of the following solutes
Grease
Ink stain
chlorophyll (3 marks)
d. i. Define the following terms
. Atom
. Elements
. Compounds
. Mixtures (8 marks)
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5. In an experiment to demonstrate the reactivity of sodium, a piece of the metal was dropped into a test tube containing water. Study the setup carefully and answer the questions that follow:
a. Write a word equation for the (3marks)
b. Name the gas involved (2marks)
c. List two other metals that react in a similar way as the sodium (2marks)
d. Name the three sub – atomic particles (3marks)
e. List the first ten elements on the periodic table (5 marks)
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6. a. i. Define valency. (2 mark)
ii. State the valences of the following elements and radicals:
I. Iron
Ii. Zinc
Iii. Hydroxyle
Iv. Carbonate (4 marks)
b. i. balance the following chemical equations
i. N2 + H2 NH3
ii. CaCO3 + HCl CaCl2 + CO2 + H2O
iii. Ca(OH)2 + HCl CaCl2 + 2 H2O (6 marks)
iii. Complete the four-year rotational program for the table below:.
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