Likely Bece Science examination questions and answers
Likely Bece Science examination.objective test. answer all questions
The answers for the objective test are the options made bold or deepened. Likely Bece Science mock examination
1. Which simple machines does a flagpole make Use of?
A. Wheel and axle
B. Lever.
C. Pulley
D. Inclined plane
2. The heart is an organ of the
A. Digestive system
B. Circulatory system
C. Respiration system
D. Reproductive system
3. Pure water must be
A. Sweet
B. Smelling good
C. White
D. Tasteless
4. Soil erosion is promoted by.
A. Bush burning
B. Contour ploughing
C. Strip cropping
D. Terracing
5. Digital instruments are composed of
A. Iron
B. Gold
C. Water
D. Transistors.
6. A force on a small contact area will produce
A. Small pressure
B. Large pressure
C. Irregular pressure
D. Zero pressure
7. It is easier to loosen a tight knot with a long spanner than a shot One because the long one
A. Does not work
B. Does little work
C. Requires little effort
D. Overcome less frictional resistance
8. An atom becomes an ion when it’s.
A. Number of electrons change
B. Number of electrons are the same
C. Number of neurons are the same
D. Number of neutrons change
9. We can aid faster digestion of the body by.
A. Overeating
B. Eating rapidly
C. Exercising body after meal
D. Taking soft drinks after meals
10. The efficiency of a machine would be zero if
A. Work input leads to no output
B. Work input equals work output
C. Work input is greater than work out put
D. No energy was wasted
11. Which of the following is true about ice?
A. It floats on water
B. Water floats on it.
C. It is hotter than water.
D. It is chemically different from water.
12. Legumes are rich sources of
A. Carbohydrates
B. Proteins
C. Water
D. Fat and oil
13. The collective name for particles contained in the nucleus of an atom is.
A. Molecules
B. Nucleons
C. Neurons
D. Protons
14. We can give the body the ability to resist COVID-19 infection by.
A. Wearing nose mask
B. Vaccination
C. Fasting
D. Incubation
15. The number of electrons in an element with atomic number 20 is.
A. 20
B. 6
C. 8
D. 10
16. A machine does 12,000J of work in one minute. Calculate its power.
A. 200W
B. 600W
C. 2,000W
D. 12, 000 W.
17. A machine lifting a load of 300N with an effort of 150N has a mechanical advantage of
A. 0.5
B. 2.0
C. 150
D. 450
18. The hardest part of the teeth is.
A. Dentine
B. Cement
C. enamel.
D. Pulp cavity
19. During digestion, saliva does not
A. Soften the food
B. Lubricant food
C. Act on cooked starch
D. Start digesting all types of foods
20. Harvesting rain water will help to.
A. Keep water clean
B. Prevent water born diseases
C. Stop paying water bills
D. Conserve water
likely Bece science examination questions and answers
21. The primary source of energy on Earth is.
A. Petroleum
B. The sun.
C. The wind.
D. Plants
22. The purpose of pricking out seedling is to.
A. Ensure quick germination
B. Protect the seedlings from heat.
C. Prevent overcrowding in the nursery
D. Increase rate of photosynthesis
23. How many atoms are present in one molecule of NH4SO4?
A. 4
B. 6
C. 8
D. 10
24. In testing a leaf for the presence of starch, the leaf I first put in to.
A. Alcohol
B. Boiling water
C. Cold water
D. Chlorophyll solution
25. Which of the following traits is not heritable?
A. Baldness
B. Height
C. Intelligent
D. Skills
26. We can protect the body against air- born diseases by.
A. Sex education.
B. Ventilation
C. Copulation
D. Fasting
27. Soil fertility can be effectively maintained by
A. Bush burning
B. Mono cropping
C. Crop rotation
D. Over grazing
28. The following forms of energy can be changed directly into heat energy except
A. Chemical energy
B. Electric energy
C. Kinetic energy
D. Potential energy
29. The particles in the cells responsible for heridity are the
A. Organelles
B. Sex cells
C. Genes.
D. Hormones
30. The depth of a pond appears shallower than normal to an observer due to
A. Diffusion
B. Osmosis
C. Refraction
D. Reflection
likely Bece science examination questions and answers
31. How many shells are in an atom of neon?
A. 2
B. 8
C. 10
D. 12
32. A piece of Chalk is made up of units of
A. Atoms
B. Molecules
C. Ions.
D. Gases
33. Tomato is an example of a.
A. Stem vegetable
B. Root vegetable
C. Fruit vegetable.
D. Leafy vegetable.
34. The method of food preservation which uses chemical to change pH medium is
A. Neutralization
B. Salting
C. Chlorination
D. Pickling
35. The most suitable soil types for maize cultivation is
A. Water logged clay
B. Dry clay.
C. Well drained loamy soil
D. Stony sand.
36. Which of the following is true about friction?
A. Makes movement impossible
B. Help reduce speed
C. It causes wear and tear
D. It produces moisture
37. The two upper Chambers of the heart are.
A. Left auricle and right auricle
B. Left ventricle and right ventricle
C. Right auricle and left ventricle
D. Right ventricle and left auricle
38. To prepare a vegetable garden, First
A. Manure the site.
B. Select the site
C. Clear the site.
D. Plant the seedlings
39. Which of the following is not true about photosynthesis?
A.it requires sunlight
B. Chlorophyll is required
C. Starch is formed
D. Oxygen is an ingredient
40. In a diffused reflection of light, the occurrence it is based on
A. Light falling on rough object
B . Light falling on smooth object
C. Light rays becoming transparent.
D. No light rays
likely bece science examination questions and answers
1.a. the diagrams below illustrate dentition in humans. study them carefully answer the questions that follows
. 
I. identify the diagrams labeled A, B and C
II. State one use of each of the structures labeled A, B and C
III. State two structural difference between A and C
IV. In what four ways can we protect the structures?
V. State two diseases that affect the structures
solution to question number one a.
I. A .- molar/premolar
B. – canine
C. – inciser
Ii. Molar/premolar- for chewing or grinding food
Canine- for tearing flesh
Inciser- for cutting or bitting food
III. _molar/premolar has projections but canine does not have projections
_canine has one root but premolar/molar has more than one root_ canine has conical shape but molar/premolar has flat shape
_ molar/premolar has large surface area but canine has small surface area
IV . _ by brushing regularly
_ avoid chewing hard substances
_ visit the dentist occasionally
_ avoid too much sugary foods
V. _ Tooth plaque
_ tooth decay
_ gum/ periodontal diseases
b. A student undertook some experiment in the science laboratory. study the diagrams involved to answer the questions that follow.
i. state the aim of the experiment
ii. which of the diagrams will rusting occur and why?
iii. why the water in test tube B boiled?
iv. state the reason why oil was added to the water in test tube B.
v. what is the function of the calcium chloride in test tube C ?
Science mock 5
Solution to question number one b. likely bece science examination questions and answers
I. An experiment to show that water and air are the necessary conditions for rusting
Ii. Rusting will occur in diagram or test tube A. This is because it contains all the necessary conditions for rusting
III. The water in test tube B was boiled to remove air or atmospheric oxygen
IV. Oil was added to the water in test tube B to prevent air or atmospheric oxygen from diffusing back into the water.
V. The function of calcium chloride in test tube C was to absorb moisture in the test tube.
c. in an experiment, 20cc of dilute hydrochloric acid was added to 20cc of dilute sodium chloride. study the diagrams carefully and answer the questions that follow
likely bece science examination questions and answers
i. what will be the effect of blue and red litmus papers in solution A and B respectively ?
ii. what will be the volume of solution C ?
III. Name the type of reaction involved and explain
iv. write a word equation for the reaction
v. write a balanced chemical equation for the reaction
Solution to question number one c.
Science mock 5
I. _Blue litmus paper in solution A will turn red because it an acid
_Blue litmus paper in solution B will remain blue since it is a base
_ Red litmus paper in solution A will remain red
_ Red litmus paper in solution B will turn blue
Ii. 40cc
III. Neutralization reaction_ it is the reaction between acid and base to produce salt and water only.
IV. Hydrochloric acid + Sodium hydroxide = Sodium chloride + water
V. HCl + NaOH=NaCl + H2O
d. this is an experiment carried out by a science student. study it carefully and answer the questions that follow.
i. identify the parts labeled I, II III and IV
ii. State three characteristics of IV
iii. what property of light is demonstrated above?
iv. state one law associated with the property of light stated in (iii) above
Solution to question number one d. likely bece science examination questions
I) I- incident ray
II- Normal
III.- reflected ray
IV. – image
Ii) characteristics of IV ( image) formed on a plane mirror
– it is virtual
– it is the same size as the object
– it is inverted
III. Reflection of light
IV. – the angle of incidence is equal to the angle of reflection
– the incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane.
2. I. List two tools that can be used for pruning
Ii. Give Four reasons for pruning in vegetable production
b. List four stages in the life cycle of flowering plants
c.i. What is a mass number?
Ii. State two difference between mass and weight
d. State three effects of hard water
Science mock 5
3. a. Describe briefly how to determine the volume of a piece of gold
b. Identify six human activities that lead to pollution of the environment
c. I.State four difference between plants and animals.
Ii. List four similarities between plants and animals
d. I. Why does water form concave meniscus in glass tube.
4. a. Give the systematic names for
I. Iron (II) sulphide
Ii. Carbon ( II) oxide
III. Copper (I) oxide
IV. Calcium chloride
V. Nitrogen ( IV) oxide
Vi. Ammonia
b. List four human activities that disrup the carbon cycle
Ii. List four effect of the disruption of the carbon cycle
c. State four importance of potassium in crop production
d. Why it is difficult to separate the mixture of Iron fillings and sulphur after heating?
5.a explain why aluminum does not rust
b. I. What is a thermometeric liquid
Ii. Give three characteristics of a good and reliable thermometric liquid
c. I.What is the difference between a complete fertilizer and incomplete.
Ii. State three advantages of organic fertilizer
6.a. what is digestion?
Ii. What is the end product of the digestion of
I. protein
Ii. Carbohydrate.
Ii. Fat and Oil
b. Why is it an inhaled air contains less carbon dioxide than an exhaled air
c.i Define the following properties of metals;
x. Ductility
y. Malleability.
Ii. Give two physical properties of metals
d. I. Explain the following cultural practices!
*. Thinning out.
#. Mulching
@. Stirring.
Ii. Give two principles of crop rotation
Solution for theory will follow soon
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