Science Test 2 Cpt

8/8/2019 Science Test 2 Cpt

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AME : CLASS:

SECTION A: OBJECTIVE QUESTIONS.

Questions 1 and 2 are based on the following figure.

1. The above figure is of an experiment carried out

to show the process of change of state. Which of the

following changes of matter can be appliedin the above experiment?

A. Only condensation

B. Only meltingC. Melting and condensation

D. Freezing and evaporation

2. Which of the following is a characteristic ofliquid X?

A. Bitter taste

B. Has pH of 7C. Changes the colour of red litmus paper to blue

D. Gives out hydrogen when reacts with an acid

3.Which of the following can raise the boiling point

of water from 100C to 102C?

A. Add a little common saltB. Boil the water in an opened containerC. Boil the water in a bigger container

D. Evaporate a little of the water and then reboil

again.

4.

The water molecule can be split into its element

shown above. Which of the following representhis process?

A. Melting C. Filtration

B. Distillation D. Electrolysis

5. Which of the following is the substance need

for photosynthesis?

A. Nitrogen C. Water B. Oxygen D. Glucose

6. What is the component that can be found only

green plants that enables them to do photosynthesiA. Carbon dioxide C. Water

B. Chlorophyll D. Oxygen

7. Photosynthesis is an important process because

I supplies food to animalsII maintains the amount of oxygen in the air

III removes carbon dioxide from our environmentA. I and II only C. II and III only

B. I and III only D. I, II and III

8. After photosynthesis has taken place, plants stor

the end product as

A. leaves C. starchB. carbon dioxide D. proteins

9. The tropical rainforest can be conserved by thefollowing ways exceptA. setting up forest reserve

B. banning logging activities totally

C. cutting down trees for timber selectivelyD. replacing trees cut down for timber by

reforestation

10. Conservation of living organisms means

A. protecting and preserving plants and animals to

SEKOLAH MENENGAH KEBANGSAAN CONVENT PULAU TIKUS

SCIENCE TEST 2

FORM 2

This test contains 2 sections. Circle your answer for Section A in the space given. Write your answer for

Section B in the provided space. Answer all questions.

Water P hydrogen +

Molecule oxygen


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prevent their extinction.B. catching animals and placing them in the zoo

C. controlling the growth of plants and animals

D. conducting studies on rare species

11. Which of the following releases carbon dioxide

into the air?I Burning of organic fuels

II Dead organisms decomposed by bacteria

III Respiration of plants

A. I and II only C. II and III onlyB. I and III only D. I, II and III

12. Which of the following statements about carboncycle is true?

A. Carbon is returned to the soil by the

decomposition of dead organismsB. Plants obtain carbon from the previous organism

in the food chain

C. Carbon dioxide in the air cannot be taken up

directly by plants and animalsD. Decomposers release carbon dioxide back into

the air

13. Which of the following process release oxygen

into the air?

A. Combustion C. PhotosynthesisB. Respiration D. Decay

14. Green house effect can lead toI melting of the polar ice

II rise in the sea levelIII global warming


15. Gases that are found in smoke and cause acidrain are

I sulphur dioxide

II nitrogen oxideIII chlorofluorocarbons

A. I and II only C. II and III only


16. Which of the following is not true about pure

water?

A. At 0C, pure water freezes into ice.B. At 100C, pure water boils into steam.

C. Pure water is colourless liquid.

D. Pure water is a good electric conductor

17. Figure below shows the set up of apparatus in

water electrolysis.

Which of the following is true about t

experiment?A. Gas Q gives a pop sound when tested w

a lighted splint.

B. Gas P causes limewater to turn milky.C. Gas Q relights a glowing splint.

D. The volume of gas P collected is twice t

volume of gas Q.

18. The ratio of oxygen gas to hydrogen gas is

A. 2 : 1 C. 1 : 3

B. 3 : 1 D. 1 : 2

19. A suspension is different from a soluti

because itA. is made up of the same solute but differe

solvents.

B. is not homogenous throughout.C. is not stirred thoroughly

D. can be separated into its original components bapplying heat.

20. Which of the following statement is true?

A. A solution can be separated by filtration.

B. A solution is a mixture of liquid and insolublesolids.

C. A solution is homogenous.

D. A solution will become a suspension at a highetemperature

21. The solubility of a solute is the amount of soluthat will dissolve in a fixed amount of solvent. Hocan we increase the solubility of a solute?

A. We can increase the temperature of the solvent.

B. We can decrease the temperature of the solventC. We can increase the temperature of the solute.

D. We can decrease the temperature of the solute.

22. 15 ml of water is filled in each container show

below and all of them are left under the sunlight f


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a while. Water in which of the following containerswill dry up first?

23. The rate of evaporation depends on

I movement of air in the surroundingII surface area of water exposed

III density of water



24. The importance of evaporation in our daily life

includesI production of salt from sea water

II drying agricultural products such as pepper and

tobacco under the sunIII Cooking rice in the electric rice cooker



25. The taste of acids isA. sweet C. bitter

B. sour D. salty

26. Which statement accurately describes an alkali?

A. Alkalis have a soapy feel and a bitter tasteB. Alkalis are usually colourless liquids.

C. Alkalis are different from acids in that they can

be used to produce carbon dioxide.D. Alkalis are extracted from plants.

27. Which of the following turns red litmus paperblue?I Soap water

II Toothpaste

III Apple juiceA. I and II only C. II and III only


28. Which of the following equations show

neutralization process?

I hydrochloric acid + sodium hydroxidesodium chloride + water

II nitric acid + calcium hydroxide

calcium nitrate + waterIII sulphuric acid + calcium hydroxide

Calcium sulphate + water


29. Which of the following acids is produced in o

stomach?A. Carbonic acid C. Hydrochloric acid

B. Sulphuric acid D. Nitric acid

30. A common test to distinguish between an ac

and alkali is the

A. burning splinter test C. colouration testB. litmus test D. limewater test

Circle your answers in the space given.

1. A B C D

2. A B C D

3. A B C D

4. A B C D

5. A B C D

6. A B C D

7. A B C D

8. A B C D

9. A B C D

10. A B C D

11. A B C D

12. A B C D

13. A B C D

14. A B C D

15. A B C D


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16. A B C D 24. A B C D

17. A B C D 25. A B C D

18. A B C D 26. A B C D

19. A B C D 27. A B C D

20. A B C D 28. A B C D

21. A B C D 29. A B C D

22. A B C D 30. A B C D

23. A B C D

SECTION B: STRUCTURED QUESTIONS

1. Differentiate evaporation and boiling.

EVAPORATION CHARACTERISTICS BOILING

2. Figure below shows an experiment conducted byLeong to identify the gas needed during

photosynthesis.

Both the set-ups were placed in strong light for five

and six hours. A leaf from each plant were thenplucked and tested for the presence of starch.

a) What is photosynthesis?

__________________________________________

__________________________________________

b) Before the experiment was conducted, Leoplaced both the plants in the dark for two or thr

days. Explain why.

_________________________________________

_________________________________________

c) What is the purpose of soda using soda lime an

sodium hydroxide solution in set-up P?

_________________________________________

_________________________________________

d) From which set-up does the leaf show a positi

result to starch test?_________________________________________

e) What can you conclude from the experiment?

_________________________________________

_________________________________________


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Science Test 2 Cpt