Likely Bece Science examination questions & Answers/bece/wassce

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? 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

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