COMBINED SCIENCE PAPER 1
ANSWER ALL QUESTIONS
1. When mixing or heating up chemicals you should always wear
A. glasses B. safety googles
C. safety hat D. running shoes
2. If you have an accident in the science laboratory, such as breaking a piece of glass wear,
you should immediately
A. report to the teacher B. run
C. clean it up D. leave the room
3. The piece of apparatus shown below is a
A. thermometer B. pipette C. funnel D. beaker
4. What is the function of the cell nucleus?
A. to act as a flashing system B. to control the activities of a cell
C. to store substances D. to control movement of substances in and out the
cell
5. What nutrient is found in both cassava and pasta?
A. protein B. fat C. carbohydrates D. fibre
6. From the following nutrients, which one is responsible for protecting our bodies from
diseases?
A. proteins B. fat C. roughage D. vitamins
7. Constipation is a condition caused by lack of ---------------------- in a diet.
A. proteins B. fat C. roughage D. vitamins
8. What is the name of the chemical used in testing for carbon dioxide?
A. lemon water B. lime water C. sublime D. splint
9. Atmospheric oxygen has a percentage of
A. 21 B. 16 C. 4 D. 0.03
10. Name the main gas in the atmosphere.
A. oxygen B. carbon dioxide C. nitrogen D. other gases
11. Blood is made up of the liquid and tissue components. Name the liquid component of
blood.
A. plasma B. red blood cells C. platelets D. white blood cell
12. The red pigment in blood which attaches to oxygen in the blood is called the
A. platelets B. plasma C. nucleus D. haemoglobin
13. The female parts of a flower is called the
A. sepals B. petals C. stamen D. carpel
14.The male parts of a flower is called the
A. sepals B. petals C. stamen D. carpel
15. What is the function of the petals of a flower?
A. supports the stigma B. pollinates the flower
C. attracts insects D. produces nectar
16. Some microscopic organisms can cause diseases. What is the name of these diseases
causing organisms?
A. virus B. pathogen C. bacteria D. fungi
17. Typhoid is caused by which type of pathogen?
A. virus B. bacteria C. parasite D. fungi
18. Swimming in contaminated water can cause
A. malaria B. typhoid C. bilharzia D. cholera
19. A method of separating a mixture of liquids with different densities is called
A. evaporation B. decanting C. filtration D. magnetism
20. A method of separating chaff from seeds is called
A. evaporation B. decanting C. magnetism D. winnowing
Below is a diagram of one of the methods of separating mixtures. Use the diagram to answer
questions 20, 21 and 22.
21. Name the method shown below.
A. evaporation
B. decanting
C. filtration
D. magnetism
22. Name the solid substances which remain on the filter paper.
A. soil B. sand C. filtrate D. residue
23. What is the name of the liquid that is collected in the collecting container?
A. filtrate B. residue C. water D. milk
24. A substance that can dissolve in a liquid is called a
A. solute B. solvent C. solution D. substance
25.The Kinetic Theory states that all particles
A. can flow B. can move and have kinetic energy
C. cannot be poured D. cannot move
26. The periodic table classifies elements. Which elements are found to the right of the
periodic table?
A. metals B. non-metals C. metalloids D. semi-metals
27. The following are properties of acids except
A. sour taste B. bitter taste
C. sticky texture D. their smell often burns the nose
28. The pH value of a neutral solution is
A. 1 B. 3 C. 7 D. 9
29. Rusting occurs when a chemical reaction takes place. What is the name of the reaction
that causes rusting?
A. oxidation B. reduction C. redox D. none
30. Which form of energy is converted to heat energy during combustion?
A. heat B. chemical C. kinetic D. light
