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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