SOF Class 4 NSO Practice Paper 2026-27 Set 2

SOF Class 4 NSO Practice Paper 2026-27 Set 2

SOF Class 4 NSO Practice Paper 2026-27 Set 2 includes 35 solved questions, Logical Reasoning, Science & Achievers section with detailed explanations.

 

SECTION 1: LOGICAL REASONING (5 Questions – 1 Mark Each)

Q1. Which number replaces the question mark (?) in the following pattern?
3, 7, 15, 31, 63, ?

1. 95
2. 127
3. 120
4. 128

Q2. If ‘EARTH’ is coded as ‘FCSTM’, how will ‘PLANET’ be coded in that same rule?

1. QMBOFU
2. QMBMFU
3. QMCNEU
4. QLBMFU

Q3. Rohan walks 5 steps North, turns right and walks 3 steps, then turns right again and walks 5 steps. In which direction is he from his starting point?

1. North
2. South
3. East
4. West

Q4. Find the missing figure combination: If Square : 4 :: Pentagon : 5 :: Octagon : ?

1. 6
2. 7
3. 8
4. 10

Q5. Select the odd one out among the given groups:

1. Lion, Tiger, Leopard
2. Cow, Goat, Deer
3. Eagle, Hawk, Vulture
4. Frog, Lizard, Crocodile

SECTION 2: SCIENCE (25 Questions – 1 Mark Each)

Q6. Which of the following processes is responsible for the formation of dew drops on leaves early in the morning?

1. Evaporation
2. Condensation
3. Sublimation
4. Melting

Q7. Which part of a cactus plant manufactures food through photosynthesis?

1. Spines
2. Green fleshy stem
3. Fibrous roots
4. Flowers

Q8. Which of the following components of air is essential for plants to prepare their food during photosynthesis?

1. Oxygen
2. Carbon dioxide
3. Nitrogen
4. Water Vapour

Q9. Which of the following animals uses blubber (a thick layer of fat) under its skin to survive in extreme cold?

1. Camel
2. Polar Bear
3. Rattlesnake
4. Kangaroo Rat

Q10. Sea breeze blows during the daytime because:

1. Land heats up faster than water
2. Sea water heats up faster than land
3. Land and sea heat up at the same rate
4. Cold air rises over the land

Q11. Which organ system helps in removing liquid waste from the human body in the form of urine?

1. Digestive System
2. Circulatory System
3. Excretory System
4. Respiratory System

Q12. Which tooth type is sharp and pointed, used primarily for tearing food (like meat)?

1. Incisors
2. Canines
3. Premolars
4. Molars

Q13. Which bird uses its chisel-like beak to make holes in tree trunks to find insects?

1. Hummingbird
2. Woodpecker
3. Pelican
4. Sparrow

Q14. Which state of matter has a fixed volume but NO fixed shape?

1. Solid
2. Liquid
3. Gas
4. Plasma

Q15. Plants that float freely on the surface of water, such as Duckweed and Water Hyacinth, have:

1. Deep roots fixed in soil
2. Light, spongy bodies filled with air spaces
3. Needle-like leaves
4. Thick woody trunks

Q16. What causes the different phases of the Moon seen from Earth?

1. Moon changing its shape daily
2. Earth’s shadow covering the Moon completely every night
3. Moon revolving around the Earth and reflecting sunlight
4. Sun moving around the Moon

Q17. Where does the process of digestion begin in the human body?

1. Stomach
2. Small Intestine
3. Mouth
4. Oesophagus

Q18. Which nutrient is known as the ‘Body-building nutrient’ necessary for growth and repair?

1. Carbohydrates
2. Proteins
3. Fats
4. Roughage

Q19. When a ball rolls on grass, it gradually slows down and stops on its own. Which force causes this?

1. Gravitational force
2. Frictional force
3. Magnetic force
4. Electrostatic force

Q20. Venus Flytrap and Pitcher Plant are called insectivorous plants because they trap insects to fulfill their requirement of:

1. Water
2. Nitrogen/Minerals
3. Sunlight
4. Carbon dioxide

Q21. Woollen clothes keep us warm in winter because wool:

1. Is a good conductor of heat
2. Traps air which is a poor conductor of heat
3. Generates heat on its own
4. Absorbs cold air

Q22. A bottle opener and a wheelbarrow are examples of which simple machine?

1. Screw
2. Lever
3. Wedge
4. Inclined Plane

Q23. Which is the largest planet in our solar system?

1. Saturn
2. Neptune
3. Jupiter
4. Uranus

Q24. The process of converting a liquid into its gas form at room temperature or heating is called:

1. Condensation
2. Evaporation
3. Freezing
4. Sedimentation

Q25. Which natural textile fibre is obtained from the cocoon of an insect?

1. Cotton
2. Wool
3. Silk
4. Jute

Q26. Roots absorb water and minerals from the soil and also help in:

1. Photosynthesis
2. Anchoring the plant firmly in soil
3. Attracting insects
4. Producing seeds

Q27. Afforestation refers to:

1. Cutting down trees in large numbers
2. Planting trees on a large scale
3. Overgrazing by cattle
4. Washing away of topsoil

Q28. Which group of animals gives birth to young ones and feeds them milk?

1. Reptiles
2. Amphibians
3. Mammals
4. Birds

Q29. Which organ secretes bile juice to aid in the digestion of fats?

1. Stomach
2. Liver
3. Pancreas
4. Large Intestine

Q30. Weight of an object on Earth is due to the pull of:

1. Atmosphere
2. Magnetic field
3. Gravity
4. Solar radiation

SECTION 3: ACHIEVERS SECTION (5 Questions – 2 Marks Each)

Q31. Suppose Earth stops revolving around the Sun but continues rotating on its axis at the same speed. What will be the direct consequence?

1. There will be no day and night.
2. There will be no change of seasons.
3. A day will become 48 hours long.
4. Gravity will cease to exist.

Q32. An experiment was performed using three soil samples P, Q, and R. 100 mL of water was poured through equal amounts of each soil. Water collected below was: P = 80 mL, Q = 20 mL, R = 50 mL. Identify soil P and Q respectively:

1. P = Clayey soil, Q = Sandy soil
2. P = Sandy soil, Q = Clayey soil
3. P = Loamy soil, Q = Sandy soil
4. P = Clayey soil, Q = Loamy soil

Q33. A child rides a bicycle up a hill, stops at the top, and then coasts down without pedaling. Select the correct order of mechanical energy at (Start -> Top -> Bottom):

1. Kinetic -> Potential -> Kinetic
2. Potential -> Kinetic -> Potential
3. Kinetic -> Kinetic -> Potential
4. Chemical -> Heat -> Light

Q34. Four surfaces W, X, Y, and Z were tested by sliding a wooden block. The distance traveled before stopping was: W = 15 cm, X = 45 cm, Y = 5 cm, Z = 30 cm. Which surface is the SMOOTHEST?

1. Surface Y
2. Surface W
3. Surface X
4. Surface Z

Q35. Read the following statements carefully:
1. Saliva contains enzymes that break down starches into simple sugars.
2. Undigested food passes into the Large Intestine where water is absorbed.
3. Digestion of all nutrients is completed in the Stomach.
Which statement(s) is/are INCORRECT?

1. Statement 1 only
2. Statement 3 only
3. Statements 1 and 2
4. Statements 2 and 3

ANSWER KEY & DETAILED EXPLANATIONS

Answer Key Table (Set 2): 1. B  |  2. A  |  3. C  |  4. C  |  5. D 6. B  |  7. B  |  8. B  |  9. B  | 10. A 11. C | 12. B  | 13. B  | 14. B  | 15. B 16. C | 17. C  | 18. B  | 19. B  | 20. B 21. B | 22. B  | 23. C  | 24. B  | 25. C 26. B | 27. B  | 28. C  | 29. B  | 30. C 31. B | 32. B  | 33. A  | 34. C  | 35. B

 

• Q1 (B): Pattern follows (n × 2) + 1: (3×2)+1=7, (7×2)+1=15, (15×2)+1=31, (31×2)+1=63, (63×2)+1 = 127.
• Q2 (A): Each letter moves +1 forward in alphabet: P->Q, L->M, A->B, N->O, E->F, T->U (QMBOFU).
• Q3 (C): 5 steps North, turn right 3 steps East, turn right 5 steps South. Rohan is now 3 steps East from origin.
• Q4 (C): Number of sides in polygon: Square=4, Pentagon=5, Octagon=8.
• Q5 (D): Frog (Amphibian), Lizard/Crocodile (Reptiles) belong to mixed biological classes, whereas other groups belong strictly to Carnivores/Herbivores/Birds.
• Q6 (B): Water vapour in warm air condenses into water droplets (dew) upon touching cold surfaces at night.
• Q7 (B): In cactus, leaves are reduced to spines to prevent water loss; green fleshy stem contains chlorophyll and makes food.
• Q8 (B): Plants consume Carbon dioxide and water in sunlight to perform photosynthesis.
• Q9 (B): Polar bears have a thick layer of fat called blubber beneath their skin for thermal insulation.
• Q10 (A): Land heats up faster during day. Warm air over land rises, and cool air from sea blows inland (Sea breeze).
• Q11 (C): Excretory System (Kidneys, Bladder) filters liquid waste from blood to form urine.
• Q12 (B): Canines are sharp, pointed teeth used for tearing meat/food.
• Q13 (B): Woodpeckers have chisel-like beaks to peck into wood.
• Q14 (B): Liquids have fixed volume but take the shape of their container (no fixed shape).
• Q15 (B): Floating aquatic plants have spongy, air-filled stems and leaves that keep them buoyant.
• Q16 (C): Phases occur because the Moon revolves around Earth and reflects varying amounts of sunlight towards us.
• Q17 (C): Digestion begins in the mouth where teeth chew food and salivary amylase starts starch breakdown.
• Q18 (B): Proteins are essential for growth, body building, and cell repair.
• Q19 (B): Frictional force between the ball and grass surface opposes motion and brings it to a stop.
• Q20 (B): Insectivorous plants grow in nitrogen-poor soil and trap insects to obtain nitrogen.
• Q21 (B): Wool traps pockets of air. Air is a poor conductor of heat and prevents body heat from escaping.
• Q22 (B): Bottle openers and wheelbarrows are Class-2 Levers.
• Q23 (C): Jupiter is the largest planet in our solar system.
• Q24 (B): Evaporation is the process of liquid changing into vapour state.
• Q25 (C): Silk thread is harvested from the cocoons spun by silkworms.
• Q26 (B): Roots anchor the plant firmly in the ground and absorb soil nutrients.
• Q27 (B): Afforestation is the process of planting trees on a large scale.
• Q28 (C): Mammals are warm-blooded vertebrates that give birth to live young and nurse them with milk.
• Q29 (B): Liver produces bile juice which breaks down fats in the small intestine.
• Q30 (C): Earth’s gravitational force pulls objects toward its center, giving them weight.
• Q31 (B): Revolution around the Sun (along with axial tilt) causes seasons. Without revolution, seasons will not change. Day and night are caused by rotation.
• Q32 (B): Soil P let 80 mL water pass through (low water retention = Sandy soil). Soil Q retained most water (high retention = Clayey soil).
• Q33 (A): Moving uphill = Kinetic Energy. Stationary at peak = Potential Energy (gravitational). Coasting down = Kinetic Energy.
• Q34 (C): Lower friction allows objects to slide further. Block traveled maximum distance (45 cm) on Surface X, so Surface X is the smoothest.
• Q35 (B): Statement 3 is INCORRECT because digestion is completed in the Small Intestine, not the Stomach.