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17. The following information shows a type of response of a plant due to a stimulus.
- Shoot grows away from the stimulus
- Enables the plant to obtain water and minerals
- Root grows towards gravitational attraction
Which of the following is the response?
A Geotropism
B Phototropism
C Thigmotropism
D Hydrotropism
18. Which of the following is true about the response of shoots of plants towards the type of
tropism stated?
Tropism Response
I Phototropism positiveII Geotropism negative
III Hydrotropism positive
A I only
B I and II only
C II and III only
D I, II and III
19. Mimosa pudica
Venus fly-trap
What is the stimulus that both the plants above respond to which is not commonly found inmost plants?
A Water
B Light
C Touch
D Gravity
20. The following information shows the process of changes of state in matter.
Solid
P
Liquid
Liquid Q Gas
Gas R Liquid
Which of the following represents process P,Q and R?
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Process P Process Q Process R
A Condensation Boiling Melting
B Boiling Condensation Melting
C Melting Boiling Condensation
D Melting Condensation Boiling
21. Which of the following physical characteristic of water changes when a water changes from
liquid to ice?
A The density
B The freezing point
C The boiling point
D The chemical composition
22. Which of the following are true about the composition of water?
I Water is compound.
II Water is molecule.III Water is made up of one oxygen atoms and two hydrogen atoms.
A I and II only
B I and III only
C II and III only
D I, II and III
23. Diagram shows the apparatus used in the electrolysis of water.
Diagram
When the apparatus is switch on, the gas collected at electrode X will
A Ignite a glowing wooden splinter
B Turn lime water milky
C Extinguish a burning splinter
D Dissolve in sodium hydroxide solution
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24. Diagram shows a piece of towel hanging on a rail.
Diagram
Which of the following factors will cause the towel to dry faster?I Movement of air
II Higher temperature of the surrounding
III Higher humidity of the air
A I and II only
B I and III only
C II and III only
D I, II and III
25. Diagram shows a beaker of water left on the a table in the laboratory for three days.
Diagram
After three days, the water level in the beaker decreases. Why do this happen?
A Water molecules lose heat and turn into solid.
B Water molecules lose energy and turn into gas.
C Water molecules absorb heat and turn into solid.
D Water molecules vibrate in a fixed position and turn into gas.
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26. Which of the following factors would affect the rate of solubility of a solute in a solvent?
I The size of solute.
II The amount of solute
III The amount of solvent.
A I and II onlyB I and III only
C II and III only
D I, II and III only
27. Which of the following methods can be used to separate the mixture of suspension?
I Filtration
II Evaporation
III Electrolysis
A I only
B II onlyC I and II only
D II and III only
28. Which of the following indicators changes colour from green to yellow when added to acid?
A Methyl orange
B Litmus indicator
C Universal indicator
D Hydrogen carbonate indicator
29. The following shows four substances P, Q, R and S.
P toothpaste
Q vinegar
R distilled waterS lime water
Which of the following best shows the pH value of the substances given above?
pH value of substances
P Q R S
A 7 6 7 5B 6 8 8 5
C 8 6 7 9
D 7 6 5 9
30. What is the salt obtained when dilute sulphuric acid is neutralized with sodium hydroxide
solution?
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A Sodium sulphate
B Sodium chloride
C Hydrogen peroxide
D Sodium hydrogen carbonate