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Question Bank (Chapter 1)

Part A: Each question is followed by four possible answers. Choose thecorrectanswer or the one

that isthe best.

1. Which is the best definition of Science?

A The study of plants

B The study of animals

C The study of living things

D The study of natural phenomena

Answer: D

2. Which is a limitation of Science?

A Science cannot give life to non-living things

B Science has enabled us to produce more food

C Science can help us to predict weather conditions

D Science has enabled us to discover more sources of energy

Answer: A

3. Which symbol is present on a bottle of alcohol in the laboratory?

A B C D

Answer: C

4. Which diagram is drawn correctly?

A B C D

Answer: B

5. What happens to the flame of a Bunsen burner when its air hole is closed?

A The flame makes a loud sound

B The flame produces more heat

C The flame produces less smoke

D The flame becomes yellow in colour

Answer: D

6. Filtration can separate

A a mixture of two solids

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B a mixture of two liquids

C a soluble solid from a liquid

D an insoluble solid from a liquid

Answer: D

7. Rainfall is best measured using a

A beaker

B conical flask

C round-bottomed flask

D measuring cylinder

Answer: D

8. Whichcannotovercome the limitations of our senses?

A Microscope C Binoculars

B Telescope D Metre rule

Answer: D

9. The sequence of steps in a scientific investigation is shown below:

Making observationsXdrawing conclusionsWhich is represented by X?

A Interpreting the data

B Stating a hypothesis

C Making an inference

D Identifying the problem

Answer: A

10.All insects have 6 legs

All cockroaches have 3 pairs of legs

What can you infer from the above?

A All cockroaches are insects

B All insects are cockroaches

C All cockroaches have 6 legs

D All insects have 3 pairs of legs

Answer: A

11. Which statement is correct?

A A hypothesis is always right

B An inference is made from observations

C A conclusion is drawn from a correct prediction

D An observation is made at the end of an experiment

Answer: B

12. When is a scientific theory formulated?

A After an inference has been made

B After a conclusion has been drawn

C After an experiment has been conducted

D After a hypothesis has been tested over and over again

Answer: D

13. Which can cause a disaster?

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A A rocket

B A bullet train

C A nuclear weapon

D An electron microscope

Answer: C

14. Which of the followingcannotbe directly measured with an instrument?

A Area C Mass

B Time D Electric current

Answer: A

15. Which is a unit of length?

A Kelvin

B Second

C Ampere

D Kilometre

Answer: D

16. The length of a field is best measured using aA rope

B pole

C metre rule

D measuring tape

Answer: D

17. Which quantity has beenwronglymatched to its SI unit?

A Time: second

B Mass: kilogram

C Length: kilometreD Temperature: kelvin

Answer: C

18. Which is measured with a thermometer?

A Time

B Mass

C Temperature

D Electric current

Answer: C

19. What is the SI unit for area?

A metre

B millimetre

C cubic metre

D square metre

Answer: D

20. The length of a curve can be measured using a

A metre rule

B measuring tape

C metre rule and a piece of thread

D metre rule and a pair of calipers

Answer: C

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Figure 1

21. The approximate area of the leaf as shown in Figure 1 is

A 12 cm2 C 15 cm2

B 13 cm2 D 16 cm2

Answer: C

22. Which of the following is derived from length and time?

A Area

B Speed

C Volume

D Density

Answer: B

23. 100 cubic centimetres of water is equivalent to

A 1 ml C 100 ml

B 10 ml D 1 000 ml

Answer: C

Figure 2

24. What is the volume of water in the measuring cylinder shown in Figure 2?

A 43 ml C 48 ml

B 46 ml D 52 ml

Answer: B

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25. The volume of water used in our homes is measured in

A litres

B millimetres

C cubic metres

D square metres

Answer: C

26. The volume of petrol sold at a petrol station is measured in

A litres C millilitres

B gallons D cubic metres

Answer: A

27. A measuring cylinder contains 65 mlof water. The volume of water becomes 85 mlafter 100

pieces of identical iron nails are dropped into the water. What is the volume of each iron nail?

A 0.02 cm3 C 2.0 cm3

B 0.2 cm3 D 5.0 cm3

Answer: B

28. 35.1 mlof a liquid is needed for an experiment. What is the best apparatus to measure the

volume of this liquid?

A A pipette

B A burette

C A test tube

D A boiling tube

Answer: B

29. A beam balance can be used to measure

A the mass of an object

B the length of an object

C the weight of an object

D the volume of an object

Answer: A

30. What is the most suitable instrument to measure the mass of a gold chain?

A A lever balance

B A beam balance

C A spring balance

D An electronic balanceAnswer: D

31. The amount of vitamin C in a tablet is normally measured in

A ml C mm

B mg D g

Answer: B

32. An astronaut with a body mass of 70 kg is in space. Which statement is true?

A His mass remains the same

B His mass is lesser than on EarthC His mass is greater than on Earth

D His mass depends on his position in space

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Answer: A

33. Which is the best definition of weight?

A The size of an object

B The amount of matter in an object

C The distance of an object from the Earth

D The pull of the Earth's gravity on an object

Answer: D

34. The weight of an object is measured with

A a lever balance

B a beam balance

C a spring balance

D an electronic balance

Answer: C

35. The weight of a mass of one kilogram is about 10 N. What is the weight of a boy whose body

mass is 30 kg?

A 3 N C 300 NB 30 N D 3 000 N

Answer: C

Part B: For Questions 36 to 50, refer to the table below.

A B C D

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

36. In Geology, we study aboutI rocks

II minerals

IIIthe weather

Answer: B

37. The benefits of Science to mankind include

I better roads

II better crops

IIIbetter medicines

Answer: A

38. Filtration can be carried out to separate

I alcohol from water

II sand particles from river water

IIIimpurities from the water in an aquarium

Answer: C

39. A small amount of a chemical can be heated in a

I test tube

II conical flask

IIImeasuring cylinder

Answer: D

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40. Which will change during an experiment?

I A variable that is kept constant

II A variable that is changed

IIIA variable that responds

Answer: C

41. In an experiment, data refers to

I the observations noted

II the readings recorded

IIIthe information collected

Answer: A

42. Which can be regarded as observations?

I The coffee is black

II The mango tastes sour

IIIThe table is very clean

Answer: A

43. Which may be expected from an experiment?

I Failure

II Success

IIINo result

Answer: A

44. Which of the following can be derived from the quantity of length only?

I Speed

II Area

IIIVolumeAnswer: C

45. The water displacement method can be used to measure the volume of a

I solid

II liquid

IIIgas

Answer: D

46. Which can be used to measure 50 mlof a liquid?

I A burette

II A pipette

IIIA measuring cylinder

Answer: A

47. The mass of an object can be measured by using

I a spring balance

II a double beam balance

IIIan electronic balance

Answer: C

48. The weight of an object depends on

I its mass

II the pull of the Earths gravity

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IIIits distance from the Earth

Answer: A

49. What are the advantages of using SI units?

I SI units are based on multiples of 10

II Prefixes can be added to the main SI units

IIISI units are standardised

Answer: A

50. 1 litre is equivalent to

I 1 dm3

II 100 ml

III100 cm3

Answer: D