CLASS 5 NSO PRACTICE PAPER Set 1
Class 5 NSO Practice Paper Set 1 based on the recurring SOF exam pattern, with 50 MCQs, answer key, and easy explanations for student practice.
Logical Reasoning
1. Find the missing number: 3, 6, 12, 24, __.
A. 36
B. 42
C. 48
D. 54
2. Riya is facing North. She turns right, then right again, and then left. Which direction is she facing now?
A. North
B. South
C. East
D. West
3. Which number does not belong to the group?
A. 16
B. 25
C. 36
D. 45
4. If CAT is coded as DBU, how is DOG coded using the same rule?
A. EPH
B. EOG
C. CNE
D. FPH
5. A clock shows 3:00. What angle is formed between the hour hand and minute hand?
A. 30°
B. 60°
C. 90°
D. 180°
6. Arrange these from smallest to largest: 0.5, 0.05, 0.55, 0.15.
A. 0.05, 0.15, 0.5, 0.55
B. 0.15, 0.05, 0.5, 0.55
C. 0.55, 0.5, 0.15, 0.05
D. 0.05, 0.5, 0.15, 0.55
7. If today is Wednesday, what day will it be 10 days later?
A. Friday
B. Saturday
C. Sunday
D. Monday
8. A cube has how many edges?
A. 6
B. 8
C. 12
D. 14
9. Which figure would come next in the pattern: triangle, square, triangle, square, __?
A. Circle
B. Triangle
C. Rectangle
D. Pentagon
10. Meena is taller than Ritu but shorter than Kavya. Who is the tallest?
A. Meena
B. Ritu
C. Kavya
D. Cannot be determined
11. Which pair has the same relationship as Bird : Nest?
A. Lion : Forest
B. Bee : Hive
C. Fish : Water
D. Cow : Grass
12. Find the odd one out.
A. January
B. March
C. May
D. June
13. If 5 pencils cost ₹25, how much will 8 pencils cost at the same rate?
A. ₹30
B. ₹35
C. ₹40
D. ₹45
14. A row has 17 students. Arjun is exactly in the middle. What is his position from either end?
A. 7th
B. 8th
C. 9th
D. 10th
15. Which word can be made by rearranging the letters L, I, S, T, E, N?
A. SILENT
B. LITTLE
C. LINES
D. LISTEN
Science
16. Which part of a plant mainly absorbs water and minerals from the soil?
A. Flower
B. Root
C. Leaf
D. Fruit
17. Which gas is needed by green plants for photosynthesis?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen
18. Which organ pumps blood throughout the human body?
A. Lungs
B. Heart
C. Stomach
D. Kidney
19. Which of these is a renewable source of energy?
A. Coal
B. Petroleum
C. Natural gas
D. Sunlight
20. Water changes into water vapour due to ______.
A. Freezing
B. Melting
C. Evaporation
D. Condensation
21. Which material is most likely to allow electricity to pass through it?
A. Rubber
B. Plastic
C. Copper
D. Wood
22. Which simple machine is commonly used to draw water from a deep well?
A. Pulley
B. Screw
C. Wedge
D. Inclined plane
23. Which planet is known for its prominent rings?
A. Mars
B. Venus
C. Saturn
D. Mercury
24. Which of the following is a good habit for preventing the spread of germs?
A. Sharing used tissues
B. Washing hands regularly
C. Leaving food uncovered
D. Drinking unsafe water
25. Which nutrient is mainly needed for growth and repair of body tissues?
A. Proteins
B. Vitamins
C. Minerals
D. Water
26. What happens to a shadow when an object is moved closer to a light source?
A. It always becomes smaller
B. It generally becomes larger
C. It disappears
D. It becomes colder
27. Which force pulls objects towards the Earth?
A. Magnetic force
B. Muscular force
C. Gravitational force
D. Frictional force
28. Which process helps plants lose water vapour mainly through their leaves?
A. Germination
B. Transpiration
C. Respiration
D. Pollination
29. Which animal is best adapted for living in very cold regions?
A. Camel
B. Polar bear
C. Frog
D. Lizard
30. Which part of the digestive system absorbs most digested nutrients?
A. Small intestine
B. Large intestine
C. Oesophagus
D. Mouth
31. A magnet attracts which object most strongly?
A. Wooden spoon
B. Iron nail
C. Glass marble
D. Plastic ruler
32. Which change is reversible?
A. Burning paper
B. Cooking an egg
C. Melting ice
D. Rusting iron
33. Which layer of soil is generally richest in humus?
A. Topsoil
B. Bedrock
C. Parent rock
D. Subsoil only
34. Why do we see lightning before hearing thunder?
A. Thunder occurs later
B. Light travels faster than sound
C. Clouds block sound
D. Lightning is colder
35. Which statement about the Moon is correct?
A. It produces its own light
B. It is a star
C. It reflects light from the Sun
D. It is larger than the Earth
36. Which of these is a decomposer?
A. Mushroom
B. Grass
C. Deer
D. Eagle
37. What is the main cause of day and night on Earth?
A. Earth’s revolution around the Sun
B. The Moon’s rotation
C. Earth’s rotation on its axis
D. Changes in cloud cover
38. Which of the following helps reduce soil erosion?
A. Removing all vegetation
B. Planting trees
C. Overgrazing
D. Leaving soil bare
39. Which body system helps us breathe?
A. Digestive system
B. Respiratory system
C. Skeletal system
D. Nervous system
40. Which object is most likely to float in water?
A. Iron nail
B. Stone
C. Dry wooden block
D. Metal coin
41. What is formed when water vapour cools and changes into tiny water droplets?
A. Evaporation
B. Condensation
C. Freezing
D. Melting
42. Which practice conserves water?
A. Leaving the tap running
B. Repairing leaking taps
C. Washing vehicles with a running hose
D. Throwing waste into rivers
43. Which of these is a natural satellite?
A. Sun
B. Moon
C. Mars
D. Venus
44. Which organ removes many waste products from the blood and forms urine?
A. Heart
B. Kidney
C. Lung
D. Stomach
45. Which type of teeth are mainly used for cutting food?
A. Incisors
B. Canines
C. Premolars
D. Molars
Achievers Section
46. A student pushes a box across the floor. Which force mainly opposes its motion?
A. Gravity
B. Friction
C. Magnetism
D. Buoyancy
47. Which action is most likely to increase air pollution?
A. Cycling to school
B. Planting trees
C. Burning plastic waste
D. Using public transport
48. A plant is kept in darkness for several days and then a leaf is tested for starch. Which result is most likely, and why?
A. The leaf turns blue-black because darkness increases starch
B. The leaf does not turn blue-black because it could not make enough food
C. The leaf turns red because chlorophyll disappears
D. The leaf becomes magnetic
49. Three identical cups contain equal amounts of water. Cup P is kept in sunlight, Q in a room, and R in a refrigerator. Which cup will generally lose water fastest by evaporation?
A. P
B. Q
C. R
D. All at the same rate
50. A child pushes a toy car down four ramps of the same height but different surfaces. On which surface will the car generally travel the shortest distance after leaving the ramp?
A. Very smooth surface
B. Polished floor
C. Rough sandpaper
D. Smooth tile
ANSWER KEY & EXPLANATIONS
1. Answer: C
Explanation: Each number is doubled: 3×2=6, 6×2=12, 12×2=24, so the next number is 24×2=48.
2. Answer: C
Explanation: North → right = East → right = South → left = East.
3. Answer: D
Explanation: 16, 25 and 36 are perfect squares. 45 is not a perfect square.
4. Answer: A
Explanation: Each letter is moved one step forward: D→E, O→P, G→H.
5. Answer: C
Explanation: At 3:00, the hands point to 3 and 12. The angle between them is 90°.
6. Answer: A
Explanation: Comparing decimal places gives 0.05 < 0.15 < 0.50 < 0.55.
7. Answer: B
Explanation: 10 days is 7 days + 3 days. Three days after Wednesday is Saturday.
8. Answer: C
Explanation: A cube has 12 edges, 8 vertices and 6 faces.
9. Answer: B
Explanation: The shapes alternate between triangle and square, so the next shape is a triangle.
10. Answer: C
Explanation: Kavya is taller than Meena, and Meena is taller than Ritu.
11. Answer: B
Explanation: A bird lives in a nest, just as a bee lives in a hive.
12. Answer: D
Explanation: January, March and May have 31 days. June has 30 days.
13. Answer: C
Explanation: One pencil costs ₹25 ÷ 5 = ₹5. Eight pencils cost 8×₹5 = ₹40.
14. Answer: C
Explanation: For 17 students, the middle position is (17+1)÷2 = 9th.
15. Answer: A
Explanation: SILENT uses exactly the six letters L, I, S, T, E and N.
16. Answer: B
Explanation: Roots absorb water and minerals from the soil and help anchor the plant.
17. Answer: C
Explanation: Plants use carbon dioxide, water and sunlight to make food during photosynthesis.
18. Answer: B
Explanation: The heart is a muscular organ that pumps blood through blood vessels.
19. Answer: D
Explanation: Sunlight is naturally replenished, so solar energy is renewable.
20. Answer: C
Explanation: Evaporation is the change of liquid water into water vapour.
21. Answer: C
Explanation: Copper is a good conductor of electricity, while rubber, plastic and dry wood are generally insulators.
22. Answer: A
Explanation: A pulley changes the direction of force and makes lifting a load easier.
23. Answer: C
Explanation: Saturn is famous for its extensive ring system.
24. Answer: B
Explanation: Regular handwashing removes many germs and helps prevent infections.
25. Answer: A
Explanation: Proteins help the body grow and repair tissues.
26. Answer: B
Explanation: When an object moves closer to a light source, it blocks a larger region of light, so its shadow generally becomes larger.
27. Answer: C
Explanation: Earth’s gravity attracts objects towards its centre.
28. Answer: B
Explanation: Transpiration is the loss of water vapour from plant leaves, mainly through stomata.
29. Answer: B
Explanation: Polar bears have adaptations such as thick fur and a layer of body fat that help them survive cold conditions.
30. Answer: A
Explanation: The small intestine has a large surface area for absorbing digested nutrients into the bloodstream.
31. Answer: B
Explanation: Iron is a magnetic material and is strongly attracted to magnets.
32. Answer: C
Explanation: Melted ice can be frozen again, so melting is a reversible physical change.
33. Answer: A
Explanation: Topsoil contains much of the organic matter called humus and supports many plants.
34. Answer: B
Explanation: Light travels much faster than sound, so the flash reaches us before the sound.
35. Answer: C
Explanation: The Moon does not produce its own visible light; it reflects sunlight.
36. Answer: A
Explanation: Mushrooms are fungi that break down dead organic matter and recycle nutrients.
37. Answer: C
Explanation: Earth rotates on its axis, causing different parts of Earth to face the Sun and experience day or night.
38. Answer: B
Explanation: Plant roots hold soil together and vegetation reduces the movement of soil by wind and water.
39. Answer: B
Explanation: The respiratory system includes organs such as the nose, windpipe and lungs and helps in breathing.
40. Answer: C
Explanation: A dry wooden block is generally less dense than water, so it floats.
41. Answer: B
Explanation: Condensation changes water vapour into liquid water droplets.
42. Answer: B
Explanation: Repairing leaks prevents unnecessary loss of water.
43. Answer: B
Explanation: The Moon is Earth’s natural satellite because it orbits Earth.
44. Answer: B
Explanation: Kidneys filter the blood and help remove wastes by producing urine.
45. Answer: A
Explanation: Incisors are the front teeth adapted mainly for cutting and biting food.
46. Answer: B
Explanation: Friction acts between surfaces in contact and opposes their relative motion.
47. Answer: C
Explanation: Burning plastic can release harmful smoke and pollutants into the air.
48. Answer: B
Explanation: Iodine turns starch blue-black. Without sufficient light, the plant cannot photosynthesise normally and starch formation is greatly reduced.
49. Answer: A
Explanation: Higher temperature generally increases evaporation, so water in the sunny cup will evaporate fastest.
50. Answer: C
Explanation: Rough sandpaper produces greater friction, which opposes motion and reduces the distance travelled.
51. Answer: A
Explanation: Metal conducts heat efficiently from the hot soup along the spoon, while wood is a relatively poor conductor.
52. Answer: A
Explanation: Grasshoppers are a major food source for frogs in this chain, so a sharp decline can reduce food available to frogs.
- NSO Class 5 Science Olympiad MCQs: Reproduction in Plants
- NSO Class 5 Science Reproduction in Plants Olympiad MCQs
Class 5 NSO Practice Paper with Answers and Explanations