ICSE Class 6 Science · Exam Practice

Science Practice Paper — Set 1

Science Practice Paper — Set 1. ICSE Class 6 Science, covering cells, the flower and leaf, circulation, matter, mixtures, air and water, measurement, force, light, magnetism and simple machines, with a full answer key and worked solutions.

🎯 Full Marks: 50⏱️ Time: 1½ Hours📝 Questions: 30
SectionType of questionsQsMarks
AMultiple Choice Questions1010
BFill in the Blanks & True / False88
CShort Answer Questions816
DProblem Solving416
Total3050
Before you start
  • This paper samples across the ICSE Class 6 Science chapters on MuskMeadow: cells, the flower and leaf, circulation, matter, mixtures, air and water, measurement, force, light, magnetism and simple machines.
  • Attempt the paper first, without looking at the answer key at the bottom of the page.
  • Show your working for Sections C and D — method marks are given even if the final answer is wrong.
  • This is a MuskMeadow practice paper. It is not an official CISCE paper and its mark scheme does not copy the board's exact pattern.
10 MARKS

Section A — Multiple Choice Questions

Choose the correct option. (1 mark each)

1. The SI unit of length is the

A. centimetreB. metreC. kilometreD. millimetre

2. Which of these is found only in plant cells?

A. NucleusB. Cell membraneC. ChloroplastD. Cytoplasm

3. The organ that pumps blood around the body is the

A. lungB. kidneyC. heartD. liver

4. About what percentage of air is oxygen?

A. 78%B. 21%C. 1%D. 50%

5. Iron filings can be separated from sand using a

A. sieveB. magnetC. filter paperD. evaporating dish

6. Water boils at ______ at normal atmospheric pressure.

A. 0 °CB. 50 °CC. 100 °CD. 212 °C

7. A seesaw is an example of a

A. pulleyB. leverC. inclined planeD. wheel and axle

8. Which of these is a luminous object?

A. The MoonB. A mirrorC. The SunD. A book

9. When two like poles of magnets are brought close, they

A. attractB. repelC. do nothingD. melt

10. Which state of matter has a fixed volume but no fixed shape?

A. SolidB. LiquidC. GasD. Plasma
8 MARKS

Section B — Fill in the Blanks & True / False

Fill in each blank, or write True / False. (1 mark each)

11. The green pigment in leaves is called ______.

12. A force can change the shape of an object. (   )

13. The part of a flower that develops into the fruit is the ______.

14. Air is a pure substance. (   )

15. The chemical symbol of sodium is ______.

16. The SI unit of mass is the ______.

17. Like poles of two magnets attract each other. (   )

18. Blood vessels that carry blood away from the heart are called ______.

16 MARKS

Section C — Short Answer Questions

Show your working. (2 marks each)

19. Define matter and give two examples.

20. Name one method to separate sand from water and one to get salt from salt solution.

21. A lever has an effort arm of 60 cm and a load arm of 20 cm. Find its mechanical advantage.

22. Express 2.5 km in metres.

23. Write two differences between a plant cell and an animal cell.

24. State the function of stomata in a leaf.

25. Write the formula of water and say what it is made of.

26. Why can we see the Moon although it is not luminous?

16 MARKS

Section D — Problem Solving

Show all steps. (4 marks each)

27. A room is 5 m long, 4 m wide and 3 m high. Find (a) the floor area, (b) the volume of the room and (c) the area of its four walls.

28. A lever has a load of 120 N at 20 cm from the fulcrum. The effort is applied 60 cm from the fulcrum on the other side. Find (a) the effort needed and (b) the mechanical advantage.

29. A 500 mL sample of air contains about 21% oxygen, 78% nitrogen and 1% other gases. Find the volume of each gas and say what happens to a burning candle if the oxygen is used up.

30. (a) Write the word equation for photosynthesis. (b) Where in the leaf does it take place? (c) Why is sunlight needed? (d) Why is photosynthesis important to living things?

ICSE Class 6 Science · Science Practice Paper — Set 1 · Answer Key

Answers & Worked Solutions

Check your paper, then read the solutions for the questions you missed.

Section A — Multiple Choice Questions (10 marks)
Q1. B. metre

The metre (m) is the SI base unit of length.

Q2. C. Chloroplast

Chloroplasts hold chlorophyll and are present only in plant cells.

Q3. C. heart

The heart pumps blood through the blood vessels.

Q4. B. 21%

Air is roughly 78% nitrogen and 21% oxygen.

Q5. B. magnet

Iron is attracted by a magnet; sand is not.

Q6. C. 100 °C

The boiling point of water is 100 °C (212 °F).

Q7. B. lever

A seesaw turns about a fixed point (fulcrum), so it is a lever.

Q8. C. The Sun

A luminous object gives out its own light; the Sun does.

Q9. B. repel

Like poles repel and unlike poles attract.

Q10. B. Liquid

A liquid takes the shape of its container but keeps its volume.

Section B — Fill in the Blanks & True / False (8 marks)
Q11. chlorophyll

Chlorophyll absorbs light energy for photosynthesis.

Q12. True

For example, squeezing a sponge or stretching a rubber band.

Q13. ovary

After fertilisation the ovary becomes the fruit and ovules become seeds.

Q14. False

Air is a mixture of gases.

Q15. Na

From its Latin name, natrium.

Q16. kilogram

Symbol: kg.

Q17. False

Like poles repel; unlike poles attract.

Q18. arteries

Veins bring blood back to the heart.

Section C — Short Answer Questions (16 marks)
Q19. Anything with mass that occupies space
  1. Matter is anything that has mass and occupies space.
  2. Examples: water, air, wood, iron.
Q20. Filtration; evaporation
  1. Sand and water: filtration (or decantation).
  2. Salt from salt solution: evaporation of the water.
Q21. 3
  1. Mechanical advantage = effort arm / load arm.
  2. MA = 60/20 = 3.
Q22. 2500 m
  1. 1 km = 1000 m.
  2. 2.5 × 1000 = 2500 m.
Q23. Cell wall and chloroplasts only in plant cells
  1. Plant cells have a cell wall; animal cells do not.
  2. Plant cells contain chloroplasts and a large vacuole; animal cells do not (or have small vacuoles).
Q24. Gas exchange and loss of water vapour
  1. Stomata are tiny pores that let carbon dioxide in and oxygen out.
  2. They also let water vapour escape (transpiration).
Q25. H₂O: two hydrogen atoms and one oxygen atom
  1. The formula of water is H₂O.
  2. Each molecule has 2 hydrogen atoms joined to 1 oxygen atom.
Q26. It reflects sunlight
  1. The Moon has no light of its own.
  2. It reflects sunlight towards the Earth, so we see it.
Section D — Problem Solving (16 marks)
Q27. (a) 20 m² (b) 60 m³ (c) 54 m²
  1. (a) Floor area = 5 × 4 = 20 m².
  2. (b) Volume = 5 × 4 × 3 = 60 m³.
  3. (c) Four walls = 2 × (5 + 4) × 3 = 54 m².
Q28. (a) 40 N (b) 3
  1. Principle of moments: effort × effort arm = load × load arm.
  2. (a) Effort × 60 = 120 × 20 = 2400, so effort = 40 N.
  3. (b) MA = load/effort = 120/40 = 3 (also 60/20 = 3).
Q29. O₂ 105 mL, N₂ 390 mL, others 5 mL; the candle goes out
  1. Oxygen = 21% of 500 = 105 mL.
  2. Nitrogen = 78% of 500 = 390 mL; other gases = 1% of 500 = 5 mL (total 500 mL ✓).
  3. Burning needs oxygen, so the candle goes out when it is used up.
Q30. carbon dioxide + water → glucose + oxygen, in chloroplasts
  1. (a) Carbon dioxide + water —(sunlight, chlorophyll)→ glucose + oxygen.
  2. (b) In the chloroplasts of leaf cells, which contain chlorophyll.
  3. (c) Sunlight supplies the energy for the reaction.
  4. (d) It makes food for plants (and animals that eat them) and releases oxygen for breathing.
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