- No category
NSO Class 4 Model Question Paper: Logical Reasoning & Science
advertisement
Certainly, Siva! Here's a clean, printable version of the NSO Model Question Paper for Class 4, formatted for classroom use with clear sections, answer bubbles, and space for student details. NSO Model Question Paper – Class 4 Total Marks: 45 | Time: 60 minutes Name: ____________________ Roll No: ____________ Date: ____________ Section A: Logical Reasoning (10 × 1 = 10 marks) Instructions: Choose the correct option and mark your answer clearly. 1. What comes next in the pattern: 2, 4, 8, 16, ___ ⃝ a) 18 ⃝ b) 24 ⃝ c) 32 ⃝ d) 20 2. Find the odd one out: Mango, Banana, Apple, Carrot ⃝ a) Mango ⃝ b) Banana ⃝ c) Apple ⃝ d) Carrot 3. If MONKEY is coded as NPMLFZ, how is TIGER coded? ⃝ a) UJHFS ⃝ b) SHFDQ ⃝ c) UJIFS ⃝ d) TJHFS 4. Which shape has the same number of sides as a hexagon? ⃝ a) Pentagon ⃝ b) Octagon ⃝ c) Triangle ⃝ d) None of these 5. What comes next in the series: A, C, E, G, ___ ⃝ a) H ⃝ b) I ⃝ c) J ⃝ d) K 6. Which clock shows the time 3:45? ⃝ a) Minute hand on 9, hour hand between 3 and 4 ⃝ b) Both hands on 3 ⃝ c) Minute hand on 6, hour hand on 3 ⃝ d) Minute hand on 3, hour hand on 9 7. Which of the following is a mirror image of the letter “R”? ⃝ a) Я ⃝ b) P ⃝ c) L ⃝ d) B 8. Which figure is symmetrical? ⃝ a) Triangle with unequal sides ⃝ b) Square ⃝ c) Scalene triangle ⃝ d) Rectangle with one side missing 9. What is the missing number in the puzzle: 3+4=7 5 + 6 = 11 7 + ? = 15 ⃝ a) 7 ⃝ b) 8 ⃝ c) 9 ⃝ d) 10 10. Which of the following is a pair of opposites? ⃝ a) Hot–Warm ⃝ b) Big–Huge ⃝ c) Tall–Short ⃝ d) Fast–Quick Section B: Science (25 × 1 = 25 marks) 11. Which part of the plant makes food? ⃝ a) Root ⃝ b) Stem ⃝ c) Leaf ⃝ d) Flower 12. Which of these animals lays eggs? ⃝ a) Cow ⃝ b) Dog ⃝ c) Hen ⃝ d) Cat 13. Which sense organ helps us to smell? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Ears ⃝ d) Skin 14. Which of the following is a source of light? ⃝ a) Moon ⃝ b) Mirror ⃝ c) Sun ⃝ d) Water 15. Which gas do plants release during photosynthesis? ⃝ a) Oxygen ⃝ b) Carbon dioxide ⃝ c) Nitrogen ⃝ d) Hydrogen 16. Which of these is a non-living thing? ⃝ a) Tree ⃝ b) Fish ⃝ c) Rock ⃝ d) Ant 17. Which part of the body helps in digestion? ⃝ a) Heart ⃝ b) Stomach ⃝ c) Lungs ⃝ d) Brain 18. Which of these is a solid? ⃝ a) Milk ⃝ b) Ice ⃝ c) Water ⃝ d) Juice 19. Which of the following is a natural source of water? ⃝ a) Tap ⃝ b) River ⃝ c) Tank ⃝ d) Pipe 20. Which of these is a good conductor of electricity? ⃝ a) Plastic ⃝ b) Wood ⃝ c) Copper ⃝ d) Rubber 21. Which planet is known as the Red Planet? ⃝ a) Earth ⃝ b) Mars ⃝ c) Jupiter ⃝ d) Venus 22. Which of these animals is a herbivore? ⃝ a) Lion ⃝ b) Tiger ⃝ c) Cow ⃝ d) Wolf 23. Which of the following helps birds to fly? ⃝ a) Legs ⃝ b) Wings ⃝ c) Beak ⃝ d) Tail 24. Which of these is a man-made fiber? ⃝ a) Cotton ⃝ b) Silk ⃝ c) Nylon ⃝ d) Wool 25. Which of the following is used to measure temperature? ⃝ a) Thermometer ⃝ b) Barometer ⃝ c) Speedometer ⃝ d) Hygrometer 26. What do we call the change of water into vapor? ⃝ a) Condensation ⃝ b) Evaporation ⃝ c) Freezing ⃝ d) Melting 27. Which of these is a healthy habit? ⃝ a) Eating junk food ⃝ b) Sleeping late ⃝ c) Washing hands before eating ⃝ d) Skipping breakfast 28. Which of these is a magnetic material? ⃝ a) Wood ⃝ b) Iron ⃝ c) Plastic ⃝ d) Glass 29. Which of these helps in breathing? ⃝ a) Liver ⃝ b) Lungs ⃝ c) Kidney ⃝ d) Stomach 30. Which of these is a renewable source of energy? ⃝ a) Coal ⃝ b) Petroleum ⃝ c) Solar energy ⃝ d) Natural gas 31. Which organ pumps blood in our body? ⃝ a) Brain ⃝ b) Heart ⃝ c) Liver ⃝ d) Lungs 32. Which of these is a reptile? ⃝ a) Frog ⃝ b) Snake ⃝ c) Whale ⃝ d) Crow 33. Which of these is used to clean teeth? ⃝ a) Comb ⃝ b) Toothbrush ⃝ c) Spoon ⃝ d) Knife 34. Which of these is a safety rule at home? ⃝ a) Playing with matchsticks ⃝ b) Running on wet floor ⃝ c) Using sharp objects carefully ⃝ d) Leaving gas open 35. Which of these is a domestic animal? ⃝ a) Tiger ⃝ b) Elephant ⃝ c) Dog ⃝ d) Lion Section C: Achievers Section (5 × 2 = 10 marks) 36. Which of the following statements is true? ⃝ a) All metals float on water ⃝ b) All plastics conduct electricity ⃝ c) All living things need air to breathe ⃝ d) All rocks are soft 37. Which of the following is a correct match? ⃝ a) Photosynthesis – Roots ⃝ b) Breathing – Lungs ⃝ c) Digestion – Heart ⃝ d) Circulation – Stomach 38. Which of the following is a reversible change? ⃝ a) Burning paper ⃝ b) Melting ice ⃝ c) Cooking rice 39. Which of the following is not a sense organ? ⃝ a) Eyes ⃝ b) Ears ⃝ c) Nose ⃝ d) Legs 40. Which of the following is a correct sequence of water cycle? ⃝ a) Condensation → Evaporation → Precipitation ⃝ b) Evaporation → Condensation → Precipitation ⃝ c) Precipitation → Condensation → Evaporation ⃝ d) Evaporation → Precipitation → Condensation ⃝ d) Rusting iron Certainly, Siva! Here's a fresh NSO-style Practice Question Paper for Class 4, designed to reinforce key science concepts and logical reasoning skills. This set maintains the same structure as before, with new questions to keep learners engaged and challenged. NSO Practice Question Paper – Class 4 (Set 2) Total Marks: 45 | Time: 60 minutes Name: ____________________ Roll No: ____________ Date: ____________ Section A: Logical Reasoning (10 × 1 = 10 marks) 1. What comes next in the pattern: 5, 10, 20, 40, ___ ⃝ a) 45 ⃝ b) 50 ⃝ c) 60 ⃝ d) 80 2. Find the odd one out: Circle, Square, Triangle, Spoon ⃝ a) Circle ⃝ b) Square ⃝ c) Triangle ⃝ d) Spoon 3. If CAT is coded as DBU, how is DOG coded? ⃝ a) EPH ⃝ b) DPH ⃝ c) EOG ⃝ d) EPG 4. Which shape has 4 equal sides and 4 right angles? ⃝ a) Rectangle ⃝ b) Square ⃝ c) Triangle ⃝ d) Circle 5. What comes next in the series: 2, 3, 5, 7, 11, ___ ⃝ a) 12 ⃝ b) 13 ⃝ c) 14 ⃝ d) 15 6. Which clock shows the time 6:30? ⃝ a) Minute hand on 6, hour hand on 6 ⃝ b) Minute hand on 6, hour hand between 6 and 7 ⃝ c) Both hands on 6 ⃝ d) Minute hand on 3, hour hand on 6 7. Which of the following is a mirror image of the letter “E”? ⃝ a) Ǝ ⃝ b) F ⃝ c) C ⃝ d) B 8. Which figure is symmetrical? ⃝ a) Irregular pentagon ⃝ b) Circle ⃝ c) Scalene triangle ⃝ d) L-shape 9. What is the missing number in the puzzle: 4+5=9 6 + 7 = 13 8 + ? = 17 ⃝ a) 8 ⃝ b) 9 ⃝ c) 10 ⃝ d) 11 10. Which of the following is a pair of opposites? ⃝ a) Up–Down ⃝ b) Big–Large ⃝ c) Fast–Quick ⃝ d) Cold–Cool Section B: Science (25 × 1 = 25 marks) 11. Which part of the plant absorbs water from the soil? ⃝ a) Leaf ⃝ b) Root ⃝ c) Stem ⃝ d) Flower 12. Which of these animals gives birth to young ones? ⃝ a) Duck ⃝ b) Snake ⃝ c) Cow ⃝ d) Lizard 13. Which sense organ helps us to hear? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Ears ⃝ d) Skin 14. Which of the following is a natural source of light? ⃝ a) Bulb ⃝ b) Torch ⃝ c) Sun ⃝ d) Candle 15. Which gas do humans breathe in from the air? ⃝ a) Carbon dioxide ⃝ b) Oxygen ⃝ c) Nitrogen 16. Which of these is a living thing? ⃝ a) Chair ⃝ b) Stone ⃝ c) Dog ⃝ d) Book ⃝ d) Hydrogen 17. Which part of the body helps us think? ⃝ a) Heart ⃝ b) Brain ⃝ c) Lungs ⃝ d) Stomach 18. Which of these is a liquid? ⃝ a) Ice ⃝ b) Steam ⃝ c) Water ⃝ d) Salt 19. Which of the following is a man-made source of water? ⃝ a) Lake ⃝ b) River ⃝ c) Tap ⃝ d) Rain 20. Which of these is a poor conductor of electricity? ⃝ a) Copper ⃝ b) Iron ⃝ c) Plastic ⃝ d) Silver 21. Which planet is closest to the Sun? ⃝ a) Earth ⃝ b) Venus ⃝ c) Mercury ⃝ d) Mars 22. Which of these animals is a carnivore? ⃝ a) Goat ⃝ b) Cow ⃝ c) Lion ⃝ d) Horse 23. Which of the following helps fish to swim? ⃝ a) Legs ⃝ b) Wings ⃝ c) Fins ⃝ d) Beak 24. Which of these is a natural fiber? ⃝ a) Nylon ⃝ b) Polyester ⃝ c) Wool ⃝ d) Plastic 25. Which of the following is used to measure weight? ⃝ a) Thermometer ⃝ b) Weighing scale ⃝ c) Barometer ⃝ d) Clock 26. What do we call the change of vapor into water? ⃝ a) Evaporation ⃝ b) Condensation ⃝ c) Freezing ⃝ d) Melting 27. Which of these is a good hygiene habit? ⃝ a) Biting nails ⃝ b) Washing hands ⃝ c) Skipping bath ⃝ d) Sharing combs 28. Which of these is a non-magnetic material? ⃝ a) Iron ⃝ b) Nickel ⃝ c) Plastic ⃝ d) Steel 29. Which of these helps in removing waste from the body? ⃝ a) Heart ⃝ b) Kidney ⃝ c) Lungs ⃝ d) Brain 30. Which of these is a non-renewable source of energy? ⃝ a) Wind ⃝ b) Solar ⃝ c) Coal ⃝ d) Water 31. Which organ helps us to see? ⃝ a) Nose ⃝ b) Eyes ⃝ c) Ears ⃝ d) Skin 32. Which of these is an amphibian? ⃝ a) Frog ⃝ b) Snake ⃝ c) Whale ⃝ d) Crow 33. Which of these is used to comb hair? ⃝ a) Brush ⃝ b) Comb ⃝ c) Spoon ⃝ d) Knife 34. Which of these is a safety rule outdoors? ⃝ a) Playing on the road ⃝ b) Crossing at zebra crossing ⃝ c) Running across traffic d) Ignoring traffic lights 35. Which of these is a wild animal? ⃝ a) Dog ⃝ b) Cow ⃝ c) Lion ⃝ d) Goat Section C: Achievers Section (5 × 2 = 10 marks) 36. Which of the following statements is true? ⃝ a) All animals have wings ⃝ b) All plants grow in soil ⃝ c) All living things grow and reproduce ⃝ d) All insects are mammals 37. Which of the following is a correct match? ⃝ a) Breathing – Heart ⃝ b) Digestion – Brain ⃝ ⃝ c) Circulation – Lungs ⃝ d) Thinking – Brain 38. Which of the following is an irreversible change? ⃝ a) Melting chocolate ⃝ b) Freezing water ⃝ c) Burning wood 39. Which of the following is not a sense organ? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Skin ⃝ d) Hand 40. Which of the following is the correct sequence of food chain? ⃝ a) Plant → Lion → Deer ⃝ b) Plant → Deer → Lion ⃝ c) Lion → Plant → Deer ⃝ d) Deer → Plant → Lion ⃝ d) Dissolving sugar Certainly, Siva! Here's a third NSO-style Practice Question Paper for Class 4 (Set 3), freshly crafted to reinforce science concepts and logical reasoning with variety and challenge. It follows the same structure for consistency and ease of use. NSO Practice Question Paper – Class 4 (Set 3) Total Marks: 45 | Time: 60 minutes Name: ____________________ Roll No: ____________ Date: ____________ Section A: Logical Reasoning (10 × 1 = 10 marks) 1. What comes next in the pattern: 1, 3, 6, 10, ___ ⃝ a) 12 ⃝ b) 14 ⃝ c) 15 ⃝ d) 16 2. Find the odd one out: Fan, Bulb, Tube light, Candle ⃝ a) Fan ⃝ b) Bulb ⃝ c) Tube light ⃝ d) Candle 3. If TREE is coded as USFF, how is LEAF coded? ⃝ a) MFBG ⃝ b) KDBE ⃝ c) MFAG ⃝ d) MEBG 4. Which shape has no sides or corners? ⃝ a) Triangle ⃝ b) Square ⃝ c) Circle ⃝ d) Rectangle 5. What comes next in the series: Z, X, V, T, ___ ⃝ a) R ⃝ b) S ⃝ c) Q ⃝ d) P 6. Which clock shows the time 9:15? ⃝ a) Minute hand on 3, hour hand on 9 ⃝ b) Minute hand on 9, hour hand on 3 ⃝ c) Both hands on 9 ⃝ d) Minute hand on 6, hour hand on 9 7. Which of the following is a mirror image of the letter “N”? ⃝ a) И ⃝ b) M ⃝ c) Z ⃝ d) W 8. Which figure is symmetrical? ⃝ a) Oval ⃝ b) Irregular triangle ⃝ c) Circle ⃝ d) L-shape 9. What is the missing number in the puzzle: 2+3=5 4+5=9 6 + ? = 13 ⃝ a) 6 ⃝ b) 7 ⃝ c) 8 ⃝ d) 9 10. Which of the following is a pair of opposites? ⃝ a) Light–Bright ⃝ b) Open–Close ⃝ c) Big–Huge ⃝ d) Fast–Quick Section B: Science (25 × 1 = 25 marks) 11. Which part of the plant holds it upright? ⃝ a) Leaf ⃝ b) Stem ⃝ c) Root ⃝ d) Flower 12. Which of these animals is cold-blooded? ⃝ a) Dog ⃝ b) Cat ⃝ c) Snake ⃝ d) Cow 13. Which sense organ helps us to feel? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Skin ⃝ d) Ears 14. Which of the following is not a source of light? ⃝ a) Sun ⃝ b) Torch ⃝ c) Mirror ⃝ d) Candle 15. Which gas do humans breathe out? ⃝ a) Oxygen ⃝ b) Carbon dioxide ⃝ c) Nitrogen 16. Which of these is not a living thing? ⃝ a) Bird ⃝ b) Tree ⃝ c) Rock ⃝ d) Fish ⃝ d) Hydrogen 17. Which part of the body helps us to pump blood? ⃝ a) Brain ⃝ b) Heart ⃝ c) Lungs ⃝ d) Kidney 18. Which of these is a gas? ⃝ a) Ice ⃝ b) Steam ⃝ c) Water ⃝ d) Milk 19. Which of the following is a natural source of water? ⃝ a) Tap ⃝ b) River ⃝ c) Tank ⃝ d) Pipe 20. Which of these is a good conductor of electricity? ⃝ a) Rubber ⃝ b) Plastic ⃝ c) Copper ⃝ d) Wood 21. Which planet is known for its rings? ⃝ a) Mars ⃝ b) Saturn ⃝ c) Earth ⃝ d) Venus 22. Which of these animals is an omnivore? ⃝ a) Cow ⃝ b) Lion ⃝ c) Bear ⃝ d) Tiger 23. Which of the following helps birds to perch? ⃝ a) Wings ⃝ b) Beak ⃝ c) Tail ⃝ d) Claws 24. Which of these is a natural fiber? ⃝ a) Nylon ⃝ b) Cotton ⃝ c) Polyester ⃝ d) Plastic 25. Which of the following is used to measure time? ⃝ a) Thermometer ⃝ b) Clock ⃝ c) Barometer ⃝ d) Scale 26. What do we call the change of water into ice? ⃝ a) Melting ⃝ b) Freezing ⃝ c) Evaporation ⃝ d) Condensation 27. Which of these is a healthy habit? ⃝ a) Eating too much candy ⃝ b) Washing fruits before eating ⃝ c) Skipping meals ⃝ d) Sleeping very late 28. Which of these is a magnetic material? ⃝ a) Glass ⃝ b) Iron ⃝ c) Plastic ⃝ d) Wood 29. Which of these helps in filtering blood? ⃝ a) Heart ⃝ b) Kidney ⃝ c) Lungs ⃝ d) Brain 30. Which of these is a renewable source of energy? ⃝ a) Coal ⃝ b) Petroleum ⃝ c) Wind ⃝ d) Natural gas 31. Which organ helps us to hear? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Ears ⃝ d) Skin 32. Which of these is a bird? ⃝ a) Frog ⃝ b) Crow ⃝ c) Whale ⃝ d) Snake 33. Which of these is used to cut paper? ⃝ a) Spoon ⃝ b) Knife ⃝ c) Scissors ⃝ d) Comb 34. Which of these is a safety rule in the kitchen? ⃝ a) Playing with knives ⃝ b) Touching hot pans ⃝ c) Using tools carefully ⃝ d) Leaving stove on 35. Which of these is a pet animal? ⃝ a) Lion ⃝ b) Dog ⃝ c) Tiger ⃝ d) Elephant Section C: Achievers Section (5 × 2 = 10 marks) 36. Which of the following statements is true? ⃝ a) All rocks float on water ⃝ b) All insects have six legs ⃝ c) All birds live in water ⃝ d) All mammals lay eggs 37. Which of the following is a correct match? ⃝ a) Seeing – Nose ⃝ b) Hearing – Ears ⃝ c) Smelling – Eyes ⃝ d) Thinking – Heart 38. Which of the following is a reversible change? ⃝ a) Cooking an egg ⃝ b) Melting wax ⃝ c) Burning paper ⃝ d) Rusting iron 39. Which of the following is not a sense organ? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Skin ⃝ d) Elbow 40. Which of the following is the correct sequence in a food chain? ⃝ a) Grass → Cow → Lion ⃝ b) Lion → Cow → Grass ⃝ c) Cow → Grass → Lion ⃝ d) Grass → Lion → Cow Absolutely, Siva! Here's a Class 4 NSO Practice Question Paper – Set 4, designed with a higher difficulty level to challenge advanced learners. This set includes more analytical reasoning, multi-step logic, and deeper science concepts, while staying age-appropriate and curriculum-aligned. NSO Practice Question Paper – Class 4 (Set 4 – Advanced Level) Total Marks: 45 | Time: 60 minutes Name: ____________________ Roll No: ____________ Date: ____________ Section A: Logical Reasoning (10 × 1 = 10 marks) 1. What comes next in the pattern: 2, 6, 12, 20, ___ ⃝ a) 30 ⃝ b) 28 ⃝ c) 24 ⃝ d) 22 2. Find the odd one out: 81, 64, 49, 36, 25, 20 ⃝ a) 81 ⃝ b) 49 ⃝ c) 25 ⃝ d) 20 3. If STAR is coded as TUBS, how is MOON coded? ⃝ a) NPPO ⃝ b) NPPM ⃝ c) NPPO ⃝ d) NPQN 4. Which shape has more than 4 sides and all sides equal? ⃝ a) Square ⃝ b) Hexagon ⃝ c) Rectangle ⃝ d) Triangle 5. What comes next in the series: 100, 90, 81, 73, ___ ⃝ a) 66 ⃝ b) 65 ⃝ c) 64 ⃝ d) 62 6. Which clock shows the time 7:20? ⃝ a) Minute hand on 4, hour hand between 7 and 8 ⃝ b) Minute hand on 7, hour hand on 4 ⃝ c) Both hands on 7 ⃝ d) Minute hand on 2, hour hand on 7 7. Which of the following is a mirror image of the letter “Q”? ⃝ a) O with tail flipped left ⃝ b) P ⃝ c) G ⃝ d) D 8. Which figure has both symmetry and equal angles? ⃝ a) Circle ⃝ b) Square ⃝ c) Scalene triangle ⃝ d) Oval 9. What is the missing number in the puzzle: 3×2=6 4 × 3 = 12 5 × ? = 20 ⃝ a) 3 ⃝ b) 4 ⃝ c) 5 ⃝ d) 6 10. Which of the following is a pair of antonyms? ⃝ a) Soft–Smooth ⃝ b) Loud–Quiet ⃝ c) Big–Large ⃝ d) Fast–Quick Section B: Science (25 × 1 = 25 marks) 11. Which part of the plant transports water and nutrients? ⃝ a) Leaf ⃝ b) Stem ⃝ c) Flower ⃝ d) Root 12. Which of these animals is both aquatic and lays eggs? ⃝ a) Whale ⃝ b) Dolphin ⃝ c) Turtle ⃝ d) Seal 13. Which sense organ helps us to maintain balance? ⃝ a) Eyes ⃝ b) Ears ⃝ c) Nose ⃝ d) Skin 14. Which of the following is a luminous object? ⃝ a) Mirror ⃝ b) Moon ⃝ c) Torch ⃝ d) Book 15. Which gas is most abundant in Earth’s atmosphere? ⃝ a) Oxygen ⃝ b) Carbon dioxide ⃝ c) Nitrogen ⃝ d) Hydrogen 16. Which of these is not a characteristic of living things? ⃝ a) Growth ⃝ b) Movement ⃝ c) Breathing ⃝ d) Shining 17. Which organ controls all other organs in the body? ⃝ a) Heart ⃝ b) Brain ⃝ c) Lungs ⃝ d) Kidney 18. Which of these is a mixture? ⃝ a) Salt ⃝ b) Water ⃝ c) Air ⃝ d) Oxygen 19. Which of the following is a man-made water source? ⃝ a) Pond ⃝ b) Lake ⃝ c) Dam ⃝ d) River 20. Which of these materials is used in electric wires? ⃝ a) Plastic ⃝ b) Copper ⃝ c) Wood ⃝ d) Glass 21. Which planet is known for having the most moons? ⃝ a) Earth ⃝ b) Mars ⃝ c) Jupiter ⃝ d) Saturn 22. Which of these animals is a scavenger? ⃝ a) Cow ⃝ b) Vulture ⃝ c) Lion ⃝ d) Horse 23. Which of the following helps birds change direction while flying? ⃝ a) Beak ⃝ b) Wings ⃝ c) Tail ⃝ d) Claws 24. Which of these is a synthetic fiber? ⃝ a) Cotton ⃝ b) Wool ⃝ c) Silk ⃝ d) Polyester 25. Which of the following is used to measure air pressure? ⃝ a) Thermometer ⃝ b) Barometer ⃝ c) Weighing scale ⃝ d) Clock 26. What do we call the change of ice into water? ⃝ a) Freezing ⃝ b) Melting ⃝ c) Condensation ⃝ d) Evaporation 27. Which of these is a sign of poor hygiene? ⃝ a) Brushing teeth ⃝ b) Bathing daily ⃝ c) Dirty nails ⃝ d) Washing hands 28. Which of these is a non-magnetic metal? ⃝ a) Iron ⃝ b) Nickel ⃝ c) Copper ⃝ d) Steel 29. Which organ removes waste gases from the body? ⃝ a) Kidney ⃝ b) Lungs ⃝ c) Brain ⃝ d) Heart 30. Which of these is not a fossil fuel? ⃝ a) Coal ⃝ b) Petroleum ⃝ c) Natural gas ⃝ d) Solar energy 31. Which organ helps us to taste? ⃝ a) Nose ⃝ b) Tongue ⃝ c) Skin ⃝ d) Eyes 32. Which of these is a mammal? ⃝ a) Crow ⃝ b) Whale ⃝ c) Snake ⃝ d) Frog 33. Which of these is used to sharpen pencils? ⃝ a) Knife ⃝ b) Sharpener ⃝ c) Spoon ⃝ d) Comb 34. Which of these is a safety rule during a thunderstorm? ⃝ a) Standing under a tree ⃝ b) Using electrical devices ⃝ c) Staying indoors ⃝ d) Playing in open field 35. Which of these is a domestic bird? ⃝ a) Parrot ⃝ b) Crow ⃝ c) Hen ⃝ d) Eagle Section C: Achievers Section (5 × 2 = 10 marks) 36. Which of the following statements is true? ⃝ a) All metals are magnetic ⃝ b) All insects have wings ⃝ c) All living things need energy ⃝ d) All animals live on land 37. Which of the following is a correct match? ⃝ a) Circulation – Brain ⃝ b) Digestion – Stomach ⃝ c) Breathing – Heart ⃝ d) Thinking – Lungs 38. Which of the following is an irreversible change? ⃝ a) Melting ice ⃝ b) Freezing water ⃝ c) Cooking rice ⃝ d) Dissolving sugar 39. Which of the following is not a sense organ? ⃝ a) Eyes ⃝ b) Nose ⃝ c) Skin ⃝ d) Knee 40. Which of the following is the correct food chain? ⃝ a) Grass → Deer → Tiger ⃝ b) Tiger → Grass → Deer ⃝ c) Deer → Tiger → Grass ⃝ d) Grass → Tiger → Deer Thanks, Siva! Here's the Answer Key with Explanations for the Class 4 NSO Practice Paper – Set 4 (Advanced Level). Each question is followed by a concise explanation to support student understanding and teacher feedback. Answer Key with Explanations Section A: Logical Reasoning (10 × 1 = 10 marks) Q Answer Explanation 1 b) 28 Pattern: +4, +6, +8, so next is +10 → 20 + 10 = 30 2 d) 20 All others are perfect squares; 20 is not 3 a) NPPO Each letter shifted forward: M→N, O→P, O→P, N→O 4 b) Hexagon Hexagon has 6 equal sides; square has 4 5 a) 66 Pattern: -10, -9, -8, -7 → next is -7 → 73 - 7 = 66 6 a) Minute hand on 4 = 20 mins; hour hand between 7 and 8 7 a) O with tail flipped left Mirror image of Q resembles flipped tail 8 b) Square Square has symmetry and equal angles 9 d) 4 5 × 4 = 20 completes the pattern 10 b) Loud–Quiet These are true opposites (antonyms) Section B: Science (25 × 1 = 25 marks) Q Answer Explanation 11 b) Stem Stem transports water and nutrients 12 c) Turtle Turtle is aquatic and lays eggs 13 b) Ears Inner ear helps maintain balance 14 c) Torch Torch produces its own light (luminous) 15 c) Nitrogen Nitrogen makes up ~78% of Earth’s atmosphere 16 d) Shining Shining is not a living trait 17 b) Brain Brain controls all body functions 18 c) Air Air is a mixture of gases 19 c) Dam Dam is a man-made water source 20 b) Copper Copper is used in wires due to conductivity 21 c) Jupiter Jupiter has the most moons 22 b) Vulture Vultures feed on dead animals—scavengers 23 c) Tail Tail helps birds steer and balance in flight 24 d) Polyester Polyester is synthetic 25 b) Barometer Barometer measures air pressure 26 b) Melting Ice turns to water—melting 27 c) Dirty nails Sign of poor hygiene 28 c) Copper Copper is non-magnetic but conducts electricity 29 b) Lungs Lungs remove carbon dioxide from body 30 d) Solar energy Not a fossil fuel; it's renewable Q Answer Explanation 31 b) Tongue Tongue helps us taste 32 b) Whale Whale is a mammal (breathes air, gives birth) 33 b) Sharpener Used to sharpen pencils 34 c) Staying indoors Safest during thunderstorms 35 c) Hen Hen is a domestic bird Section C: Achievers Section (5 × 2 = 10 marks) Q Answer Explanation 36 c) All living things need energy True for survival and growth 37 b) Digestion – Stomach Stomach breaks down food 38 c) Cooking rice Cannot reverse cooked rice to raw form 39 d) Knee Knee is not a sense organ 40 a) Grass → Deer → Tiger Correct food chain: producer → herbivore → carnivore Would you like me to format this into a printable answer sheet with scoring boxes and student feedback prompts? Or create a challenge worksheet based on the trickiest questions from all four sets? Here’s a curated set of 15 trickiest NSO-style questions for Class 4, drawn from across all four papers and enhanced for deeper thinking. These challenge pattern recognition, multi-step reasoning, and conceptual clarity—perfect for advanced learners or revision drills. NSO Challenge Questions – Class 4 (Mixed Difficulty) Logical Reasoning 1. What comes next in the pattern: 2, 6, 12, 20, ___ ⃝ a) 30 ⃝ b) 28 ⃝ c) 24 ⃝ d) 22 Hint: Differences increase by 2 each time. 2. Find the odd one out: 81, 64, 49, 36, 25, 20 ⃝ a) 81 ⃝ b) 49 ⃝ c) 25 ⃝ d) 20 Hint: All but one are perfect squares. 3. What comes next in the series: 100, 90, 81, 73, ___ ⃝ a) 66 ⃝ b) 65 ⃝ c) 64 ⃝ d) 62 Hint: Decreasing pattern with reducing gaps. 4. If STAR is coded as TUBS, how is MOON coded? ⃝ a) NPPO ⃝ b) NPPM ⃝ c) NPPO ⃝ d) NPQN Hint: Each letter shifts forward by one. 5. Which figure has both symmetry and equal angles? ⃝ a) Circle ⃝ b) Square ⃝ c) Scalene triangle ⃝ d) Oval Hint: Think geometry and balance. Science & Application 6. Which sense organ helps us maintain balance? ⃝ a) Eyes ⃝ b) Ears ⃝ c) Nose ⃝ d) Skin Hint: Inner ear has a special role. 7. Which gas is most abundant in Earth’s atmosphere? ⃝ a) Oxygen ⃝ b) Carbon dioxide ⃝ c) Nitrogen ⃝ d) Hydrogen Hint: It’s not the one we breathe most. 8. Which of these is a mixture? ⃝ a) Salt ⃝ b) Water ⃝ c) Air ⃝ d) Oxygen Hint: Contains more than one substance. 9. Which planet is known for having the most moons? ⃝ a) Earth ⃝ b) Mars ⃝ c) Jupiter ⃝ d) Saturn Hint: Think biggest planet. 10. Which of these animals is a scavenger? ⃝ a) Cow ⃝ b) Vulture ⃝ c) Lion ⃝ d) Horse Hint: Feeds on dead animals. Achievers Section 11. Which of the following is an irreversible change? ⃝ a) Melting ice ⃝ b) Freezing water ⃝ c) Cooking rice Hint: Can you get raw rice back? 12. Which of the following statements is true? ⃝ a) All metals are magnetic ⃝ b) All insects have wings ⃝ c) All living things need energy ⃝ d) All animals live on land Hint: Think biology basics. ⃝ d) Dissolving sugar 13. Which organ removes waste gases from the body? ⃝ a) Kidney ⃝ b) Lungs ⃝ c) Brain ⃝ d) Heart Hint: What helps you exhale? 14. Which of the following is the correct food chain? ⃝ a) Grass → Deer → Tiger ⃝ b) Tiger → Grass → Deer ⃝ c) Deer → Tiger → Grass ⃝ d) Grass → Tiger → Deer Hint: Producer → Herbivore → Carnivore 15. Which of the following is used to measure air pressure? ⃝ a) Thermometer ⃝ b) Barometer ⃝ c) Weighing scale Hint: Think weather instruments. ⃝ d) Clock Would you like these formatted into a printable worksheet with scoring boxes and space for student reasoning? Or turned into a challenge quiz with timed scoring? Certainly, Siva! Here's the Answer Key with Explanations for the NSO Challenge Questions – Class 4, presented in a clean, printable table format. This layout is ideal for classroom use, teacher reference, or student review. NSO Challenge Questions – Answer Key & Explanations Q.No Answer Explanation 1 b) 28 Pattern: +4, +6, +8, +10 → 20 + 10 = 30 2 d) 20 All others are perfect squares (9², 8², etc.); 20 is not 3 a) 66 Pattern: -10, -9, -8, -7 → 73 - 7 = 66 4 a) NPPO Each letter shifted forward: M→N, O→P, O→P, N→O 5 b) Square Square has symmetry and equal angles; circle has symmetry but no angles 6 b) Ears Inner ear helps maintain balance through semicircular canals 7 c) Nitrogen Makes up ~78% of Earth’s atmosphere; most abundant 8 c) Air Air is a mixture of gases (oxygen, nitrogen, etc.) 9 c) Jupiter Jupiter has most moons among planets 10 b) Vulture Vultures feed on dead animals—scavengers 11 c) Cooking rice Irreversible—cannot uncook rice 12 c) All living things need energy True for growth, movement, and survival 13 b) Lungs Lungs remove carbon dioxide, a waste gas 14 a) Grass → Deer → Tiger Correct food chain: producer → herbivore → carnivore 15 b) Barometer Barometer measures air pressure; used in weather forecasting Certainly, Siva! Here's a fresh set of 30 NSO-style challenge questions for Class 4, designed to stretch reasoning, deepen science understanding, and reinforce analytical thinking. These are ideal for advanced practice or enrichment worksheets. NSO Challenge Questions – Class 4 (Set 5: Advanced Practice) Logical Reasoning (15 Questions) 1. What comes next in the pattern: 1, 4, 9, 16, ___ ⃝ a) 20 ⃝ b) 25 ⃝ c) 36 ⃝ d) 49 2. Find the odd one out: Apple, Banana, Tomato, Carrot ⃝ a) Apple ⃝ b) Banana ⃝ c) Tomato ⃝ d) Carrot 3. If DOG is coded as EPH, how is CAT coded? ⃝ a) DBU ⃝ b) DBU ⃝ c) DBV ⃝ d) DAU 4. Which shape has 8 sides? ⃝ a) Hexagon ⃝ b) Octagon ⃝ c) Pentagon ⃝ d) Heptagon 5. What comes next in the series: 2, 5, 10, 17, ___ ⃝ a) 26 ⃝ b) 24 ⃝ c) 22 ⃝ d) 20 6. Which clock shows the time 12:45? ⃝ a) Minute hand on 9, hour hand between 12 and 1 ⃝ b) Both hands on 12 ⃝ c) Minute hand on 3, hour hand on 12 ⃝ d) Minute hand on 6, hour hand on 12 7. Mirror image of “B” is: ⃝ a) Ɓ ⃝ b) D ⃝ c) ᗺ ⃝ d) P Which figure has no corners and is symmetrical? ⃝ a) Triangle ⃝ b) Circle ⃝ c) Square ⃝ d) Rectangle 9. What is the missing number: 5 + 6 = 11 7 + 8 = 15 9 + ? = 19 ⃝ a) 9 ⃝ b) 10 ⃝ c) 11 ⃝ d) 12 10. Which pair shows opposites? ⃝ a) Tall–High ⃝ b) Fast–Quick ⃝ c) Open–Close ⃝ d) Big–Large 11. What comes next in the pattern: A, D, G, J, ___ ⃝ a) K ⃝ b) M ⃝ c) N ⃝ d) L 12. Which number is missing: 2×3=6 3 × 4 = 12 4 × ? = 20 ⃝ a) 4 ⃝ b) 5 ⃝ c) 6 ⃝ d) 7 13. Which shape has equal sides but no angles? ⃝ a) Square ⃝ b) Circle ⃝ c) Triangle ⃝ d) Rectangle 14. If MONKEY → NPMLFZ, then DONKEY → ? ⃝ a) EPMMFZ ⃝ b) EPMMFY ⃝ c) EPNMFZ ⃝ d) EPMMGZ 15. Which figure is symmetrical and has 4 equal sides? ⃝ a) Rectangle ⃝ b) Square ⃝ c) Triangle ⃝ d) Oval 8. Science & Application (15 Questions) 16. Which part of the plant helps in reproduction? ⃝ a) Leaf ⃝ b) Stem ⃝ c) Flower ⃝ d) Root 17. Which of these animals is warm-blooded? ⃝ a) Snake ⃝ b) Frog ⃝ c) Whale ⃝ d) Lizard 18. Which organ helps us to think and learn? ⃝ a) Heart ⃝ b) Brain ⃝ c) Lungs ⃝ d) Kidney 19. Which of these is a natural source of light? ⃝ a) Torch ⃝ b) Bulb ⃝ c) Sun ⃝ d) Candle 20. Which gas do plants absorb during photosynthesis? ⃝ a) Oxygen ⃝ b) Carbon dioxide ⃝ c) Nitrogen ⃝ d) Hydrogen 21. Which of these is a non-living thing? ⃝ a) Tree ⃝ b) Fish ⃝ c) Rock ⃝ d) Ant 22. Which organ helps in filtering blood? ⃝ a) Brain ⃝ b) Kidney ⃝ c) Lungs ⃝ d) Heart 23. Which of these is a mixture? ⃝ a) Salt ⃝ b) Water ⃝ c) Air ⃝ d) Oxygen 24. Which of these is a synthetic fiber? ⃝ a) Cotton ⃝ b) Wool ⃝ c) Nylon ⃝ d) Silk 25. Which instrument measures temperature? ⃝ a) Thermometer ⃝ b) Barometer ⃝ c) Weighing scale ⃝ d) Clock 26. What do we call the change of vapor into water? ⃝ a) Evaporation ⃝ b) Condensation ⃝ c) Freezing ⃝ d) Melting 27. Which of these is a renewable source of energy? ⃝ a) Coal ⃝ b) Petroleum ⃝ c) Solar energy ⃝ d) Natural gas 28. Which of these helps birds to fly and steer? ⃝ a) Beak ⃝ b) Wings ⃝ c) Tail ⃝ d) Claws 29. Which of these is a safety rule during rain? ⃝ a) Playing in puddles ⃝ b) Using dry shoes ⃝ c) Standing under trees ⃝ d) Running on wet floor 30. Which of these is a correct food chain? ⃝ a) Grass → Cow → Lion ⃝ b) Cow → Grass → Lion ⃝ c) Lion → Cow → Grass ⃝ d) Grass → Lion → Cow Would you like the answer key with explanations for this set in a printable table next? I can also format this into a worksheet with scoring boxes and student-friendly hints. Here you go, Siva! Below is a printable answer key with explanations for the 30 challenge questions from Set 5. It’s structured for clarity and classroom use, with concise reasoning for each answer. NSO Challenge Questions – Set 5 Answer Key & Explanations Q.No Answer Explanation 1 b) 25 Pattern: 1², 2², 3², 4² → next is 5² = 25 2 d) Carrot Carrot is a vegetable; others are fruits 3 a) DBU C→D, A→B, T→U (each letter +1) 4 b) Octagon Octagon has 8 sides 5 a) 26 Pattern: +3, +5, +7, +9 → 17 + 9 = 26 6 a) Minute hand on 9 = 45 mins; hour hand between 12 and 1 7 c) ᗺ Mirror image of B resembles ᗺ 8 b) Circle Circle has no corners and perfect symmetry 9 b) 10 9 + 10 = 19 completes the pattern 10 c) Open–Close True opposites 11 b) M Pattern: +3 letters each time → J + 3 = M 12 b) 5 4 × 5 = 20 13 b) Circle Equal sides, no angles 14 a) EPMMFZ Each letter shifted forward by one 15 b) Square 4 equal sides and symmetrical Q.No Answer Explanation 16 c) Flower Flowers help in reproduction 17 c) Whale Whale is a warm-blooded mammal 18 b) Brain Brain controls thinking and learning 19 c) Sun Sun is a natural light source 20 b) Carbon dioxide Plants absorb CO₂ during photosynthesis 21 c) Rock Rock is non-living 22 b) Kidney Kidneys filter blood 23 c) Air Air is a mixture of gases 24 c) Nylon Nylon is synthetic 25 a) Thermometer Measures temperature 26 b) Condensation Vapor to water is condensation 27 c) Solar energy Renewable and sustainable 28 c) Tail Tail helps birds steer in flight 29 b) Using dry shoes Prevents slipping and electric shock 30 a) Grass → Cow → Lion Correct food chain: producer → herbivore → carnivore Would you like this formatted into a printable worksheet with scoring boxes and space for student responses? I can also prepare a self-assessment version with hints for independent practice.
0
advertisement
Download
advertisement
Add this document to collection(s)
You can add this document to your study collection(s)
Sign in Available only to authorized usersAdd this document to saved
You can add this document to your saved list
Sign in Available only to authorized users