BECE 2005 Integrated Science Past Questions and Answers
The BECE 2005 Integrated Science paper has 39 objective and 5 theory questions. Here are sample objective questions with the correct answers and explanations. Sit the full paper with the real time limit on ePrep.
Sample questions with answers
1. Hydrogen is represented by the chemical symbol H$_{2}$. This symbol represents
- A. two molecules of hydrogen.
- B. two atoms of hydrogen.
- C. two elements of hydrogen.
- D. two ions of hydrogen.
Answer: B. two atoms of hydrogen.
Answer: B. H₂ means one hydrogen molecule made of two hydrogen atoms.
Answer: B. H₂ means one hydrogen molecule made of two hydrogen atoms.
2. A metal expands when there is
- A. an increase in heat energy.
- B. an increase in number of electrons.
- C. a decrease in potential energy.
- D. a decrease in distance between atoms.
Answer: A. an increase in heat energy.
Answer: A. Heating gives particles more energy, so the metal expands.
Answer: A. Heating gives particles more energy, so the metal expands.
3. A safety device which opens an electric circuit to prevent too much current from passing through the circuit is the
- A. earth wire.
- B. lightning conductor.
- C. fuse.
- D. switch.
Answer: C. fuse.
Answer: C. A fuse melts and opens the circuit when current is too high.
Answer: C. A fuse melts and opens the circuit when current is too high.
4. An object is placed 20 cm in front of a plane mirror. The distance between the object and the image is
- A. 20 cm.
- B. 40 cm.
- C. 60 cm.
- D. 80 cm.
Answer: B. 40 cm.
Characteristics of image formed by a plane mirror
1. The image formed by a plane mirror is virtual and erect.
2. The image formed by a plane mirror is of the same size as the object.
3. The image is formed behind the mirror and the distance of the image from the mirror is equal to the distance of the object from the mirror.
Distance between the object and the image = Object distance + image distance
Distance between the object and the image = 20 cm + 20 cm = 40 cm
Characteristics of image formed by a plane mirror
1. The image formed by a plane mirror is virtual and erect.
2. The image formed by a plane mirror is of the same size as the object.
3. The image is formed behind the mirror and the distance of the image from the mirror is equal to the distance of the object from the mirror.
Distance between the object and the image = Object distance + image distance
Distance between the object and the image = 20 cm + 20 cm = 40 cm
5. In which of the following circuit diagrams below will the bulb light?
- A.
- B.
- C.
- D.
Answer: B.
Positive part must be connected to the negative part and negative to positive.
Positive part must be connected to the negative part and negative to positive.
6. The source of all forms of energy can be traced to
- A. clouds.
- B. earthquakes.
- C. tides.
- D. sunlight.
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7. When mango is falling from a tree, its potential energy is changed to
- A. sound energy.
- B. heat energy.
- C. kinetic energy.
- D. chemical energy.
Answer and explanation: practise this paper on ePrep.
8. Electricity is used by appliances to do work. This means that electricity is a form of
- A. energy.
- B. force.
- C. generator.
- D. machine.
Answer and explanation: practise this paper on ePrep.
9. A force of 2N moves a body through a distance of 10 m. Calculate the work done.
- A. 5 J
- B. 8 J
- C. 12 J
- D. 20 J
Answer and explanation: practise this paper on ePrep.
10. The diagram below shows a lever system used to move a stone. Use it to answer the question below
The distance X is the
The distance X is the
- A. effort distance.
- B. load distance.
- C. fulcrum.
- D. lever arm.
Answer and explanation: practise this paper on ePrep.
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