science form 1 Objective test

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Sains/Science Ogos/ August 2010 1½ jam / 1 ½ hours.

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SMK ISKANDAR SHAH JASIN MELAKA

UJIAN PENGESANAN OGOS / AUGUST TEST TINGKATAN TINGKATAN SATU/ FORM ONE 2010

JANGAN BUKA KERTAS SOALAN IN! SEHINGGA DIBERITAHU 

ARAHAN: 1. Kertas soalan ini mengandungi  40 soalan. Jawab

semua

soalan.

Rajah yang mengiringi soalan dimaksudkan untuk memberi maklumat yang berguna bagi menjawab soalan. Rajah tidak semestinya dilukis mengikut skala. Tiap-tiap soalan soalan diikuti oleh empat empat pilihan jawapan jawapan yang berhuruf berhuruf A, B, C dan D. Bagi tiap-tiap tiap-tiap soalan  pilih satu jawapan sahaja. Tandakan semua jawapan anda pada kertas jawapan OMR anda. 5 Fikirkan dengan teliti ketika memilih jawapan anda. Jika anda hendak menukar sesuatu    jawapan, padamkan sehingga bersih jawapan yang tidak dikehendaki itu dan hitamkan  pilihan anda yang baru.

Prepared by:

……………………….. (Pn. Siti Zaidah Ahmad)

Checked by:

………………………….. (SMKIS Science Head Panel)

Kertas soalan ini mengandungi 7 halaman bercetak termasuk muka hadapan

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1.

2.

II animal droppings III microorganisms

A B C D

A B C D

Soil and air. Soil and water. Oxygen and water. Carbon dioxide and water.

Which of the following is not one of the Earth's resources? B Air  D Plastic

Which of the following is not an example of fossil fuel? A B C D

4.

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Which of the resources on earth do green  plants need to make their own food?

A Soil C Water

3.

2

Coal Petroleum Natural gas Sulphur 

Which of the following is a mineral? A Air C Water

B Silver  D Kerosene

I only I and II only I and III only I, II and III

4. Which of the following can form the coal and  petroleum? I animal remains. II melted rocks. III decayed plants. A B C D

I and II only I and III only II and III only I, II and III

5. What is the estimation of water content in a human body? A 37% C 70%

B 40% D 100%

2. Figure 1 shows the natural resources on Earth. 6. Which of the following represents molecule of  water? A

B

C

D

 Figure 1

7. Figure 2, shows a molecule. Which resources are needed to sustain life? A B C D

Air and water  Air and fossil fuels Water, minerals and soil Air, soil and living things

3. What are organic matter in the soil made up of? I humus

P

Q

R

S

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 Figure 2 Which of the molecules shown above consists of one element?

A P C R

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C

D

B Q D S

8. Which of the following represents an element? A

B

C

D

11. Which of the following properties of nonmetals is incorrectly matched to its description?

A B C D

Property dull brittle poor heat conductor  poor electrical conductor 

Description The surface glitters Breaks easily Cannot transfer heat Electricity cannot flow through it

9. Figure 3 shows a classification chart of  elements 12. Why is aluminium used to make pots and pans? A B C D

have shiny surfaces. are easily malleable. are good conductors of heat. are good conductors of electricity.

 Figure 3

13. The following is a list of non-metallic element.

What are X and Y?

A B C D

X Aluminium Phosphorus Calcium Chlorine

Y Copper   Bromine Cobalt Zinc

Diamond

A

Coal

Which of the substances can exist exactly same as the above substances? A phosphorus C carbon

10. Which of the diagrams above represent a mixture?

Graphite

B sulphur   D nitrogen

14. Which of the following is true about a sugar  solution?

B A B C D

It is prepared chemically. Its elements are in a fixed ratio. Heat is released during its preparation. Its elements maintain their original characteristics.

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15. Why is mercury suitable to be used in thermometer? A has a dull surface. B has high melting point. C is a good conductor of heat. D is a good electrical conductor 

16. The following are steps in an experiment to separate salt from a mixture of sand and salt. P - Add water to the mixture Q - Evaporate the salt solution R - Filter the mixture to remove sand S - Stir the mixture gently Which of the following shows the correct sequence? A B C D

P S R  Q Q R  P S Q R  S P R  Q P S

 Figure 5

The result is that substance X is formed. Identify substance X. A B C D

Iron sulphur metal. Iron sulphide atom. Iron sulphur mixture. Iron sulphide compound.

19. Figure 6 shows some salt solution being heated slowly.

17. Figure 4 shows a process to separate the components in mixture X.  Figure 6 

What will be observed on the watch glass? A B C D

 Figure 4

20. The following is a list of resources.

Which of the following is likely to be mixture X? A B C D

Water and salt Petrol and water  Water and alcohol Coffee drink and carbon powder 

18. Figure 5 shows an experiment where sulphur   powder is heated together with iron filings.

Salt droplets Water droplets Carbon droplets Salt solution droplets

Air

Water

Plants

Why are the resources important to all living? A B C D

support life on Earth are required by plants cannot be renewable can be manufactured

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21. Figure 7 shows three resources needed for    process X.

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25. Which of the following activities increases the amount of solid waste in the environment? I

Global usage of plastic bags and containers II Recycling papers and glass bottles III Using biodegradable household  products  Figure 7 

What is process X? A Combustion B Photosynthesis

B Respiration D Crystallisation

22. What are the importance of water to plants? I to support the plant II to make food III to transport food A B C D

I only I and II only II and III only I, II and III

23. Which of the following will not help to conserve and preserve the Earth’s resources? A Reduce open burning. B Reduce felling of trees. C Reduce using leaded petrol. D Reduce using biodegradable products.

A B C D

I and II only I and III only II and III only I, II and III

26. Air consists of several types of gases. Which of  the following is not present in air? A Oxygen B Nitrogen C Hydrogen D Carbon dioxide

27. Which of the following consist of inert gases only? A Helium, hydrogen, neon and nitrogen B Xenon, argon, krypton and radon C Oxygen, xenon, neon and argon D Neon, krypton, helium and nitrogen

28. Figure 8 shows a lighted candle in an inverted gas jar. The candle extinguished after 10 seconds.

24. Which steps should be taken to conserve and  preserve the earth’s resources? I reuse certain old materials II reduce the use of plastics III recycle old newspaper  A B C D

III only I and III II and III I, II and III

 Figure 8

What is the percentage of oxygen in air  that is used for the combustion?

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A

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D To show that air contains microorganisms

B 31. Air is a mixture. Which of the followings are the best explanations?

C

I

D

29. In Figure 9, when the torchlight is turned on in a dark room, tiny specks are seen in the ray of  light from the torchlight.

the percentage of the components of air is not fixed II Each component in air shows its original  property when separated III The components of air are easily separated by physical means A B C D

I only I and III II and III I, II and III

32. Figure 10 shows a gas being tested.

 Figure 9

What is conclusion for the air content? I has dust particles. II has microorganisms. III has rare gases. A B C D

I only I, II, III I and II only II and III only

 Figure 10

What is the most probably gas? A Nitrogen B Oxygen C Carbon dioxide D Sulphur dioxide

Questions 36 to 37 are based on Figure 12.

33. Figure 11 shows an experiment set-up. 30. The apparatus in Figure 10 is set up in an experiment. The sterile Petri dish is filled with sterile nutrient agar. The agar is then exposed to the air for an hour. The Petri dish is then covered and sealed with cellophane tape.

 Figure 11  Figure 10

What is the aim of the experiment? A To show that air contains inert gases B To show that air contains dust particles C To show that air contains water vapour 

Which of the following are correct?

A B

Gas X Condition of lime water  Oxygen Clear lime water turns cloudy Carbon Cloudy lime water turns

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C D

dioxide clear   Carbon Clear lime water turns dioxide cloudy Oxygen Cloudy lime water turns clear 

34. What can be used to replace the limewater? I moist blue litmus paper  II Cobalt chloride paper  III Hydrogen bicarbonate indicator  A B C D

I only I and III only II and III only I, II and III

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A B C D

 Figure 12

What are the changes in the levels of  solutions in the two test tubes? Y Increased Unchanged Unchanged Increased

36. Figure 13 shows the particles of a gas, which is a component of the air.

 Figure 13

What is the probably gas?

carbon dioxide. nitrogen. oxygen. argon.

37. Which of the following that oxygen can dissolve in? I sodium hydroxide solution II alkaline pyrogallol solution III water  A B C D

35. Figure 12 shows an experiment to test the solubility of oxygen and carbon dioxide in the sodium hydroxide solution.

X A Increased B Increased C Unchanged D Unchanged

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I only I and II only II and III only I, II and III

END OF QUESTION PAPER