MCQ | NCERT Class 9 Science | Chapter 4: Exploring Magnets
Q1. What is a magnet?
(a) A material that attracts certain magnetic materials
(b) A material that attracts all objects
(c) A material that produces light
(d) A material that produces heat
Answer: (a) A material that attracts certain magnetic materials
Q2. Which of the following is attracted by a magnet?
(a) Iron
(b) Wood
(c) Plastic
(d) Glass
Answer: (a) Iron
Q3. Which of the following is generally not attracted by a magnet?
(a) Iron nail
(b) Steel pin
(c) Wooden stick
(d) Iron piece
Answer: (c) Wooden stick
Q4. Which of the following is a magnetic material?
(a) Iron
(b) Paper
(c) Rubber
(d) Glass
Answer: (a) Iron
Q5. What are the two ends of a bar magnet called?
(a) Positive and negative ends
(b) North and South poles
(c) East and West poles
(d) Upper and lower poles
Answer: (b) North and South poles
Q6. Where is the magnetic effect of a bar magnet generally strongest?
(a) At its poles
(b) At its centre only
(c) Outside the magnet only
(d) Nowhere
Answer: (a) At its poles
Q7. How many poles does a bar magnet have?
(a) One
(b) Two
(c) Three
(d) Four
Answer: (b) Two
Q8. What happens when the north pole of one magnet is brought near the north pole of another magnet?
(a) They attract each other
(b) They repel each other
(c) They become non-magnetic
(d) Nothing happens
Answer: (b) They repel each other
Q9. What happens when the north pole of one magnet is brought near the south pole of another magnet?
(a) They repel each other
(b) They attract each other
(c) Both magnets lose magnetism
(d) They stop behaving like magnets
Answer: (b) They attract each other
Q10. Which statement about magnetic poles is correct?
(a) Like poles attract each other
(b) Unlike poles attract each other
(c) All poles repel each other
(d) Magnets have only one pole
Answer: (b) Unlike poles attract each other
Q11. What happens when a bar magnet is suspended freely?
(a) It always remains in a random direction
(b) It tends to settle approximately in the north-south direction
(c) It points only towards the east
(d) It points only towards the west
Answer: (b) It tends to settle approximately in the north-south direction
Q12. Which instrument uses the directional property of a magnet?
(a) Thermometer
(b) Compass
(c) Measuring cylinder
(d) Balance
Answer: (b) Compass
Q13. A compass contains
(a) a freely rotating magnetic needle
(b) a glass rod
(c) a thermometer
(d) a piece of wood
Answer: (a) a freely rotating magnetic needle
Q14. What is the main use of a compass?
(a) To measure temperature
(b) To find directions
(c) To measure length
(d) To measure mass
Answer: (b) To find directions
Q15. What happens if a magnet is cut into two pieces?
(a) Only one piece remains magnetic
(b) Both pieces can have north and south poles
(c) Both pieces lose all magnetism
(d) Only the north pole remains
Answer: (b) Both pieces can have north and south poles
Q16. Which of the following is a natural magnet?
(a) Lodestone
(b) Plastic bar
(c) Wooden block
(d) Glass rod
Answer: (a) Lodestone
Q17. A lodestone is a naturally occurring form of
(a) iron-bearing magnetic material
(b) plastic
(c) glass
(d) wood
Answer: (a) iron-bearing magnetic material
Q18. Which of the following objects can be tested to find out whether it is magnetic?
(a) Iron nail
(b) Paper sheet
(c) Wooden ruler
(d) Rubber eraser
Answer: (a) Iron nail
Q19. Why should a magnet be kept away from some electronic devices?
(a) Strong magnetic fields may affect their functioning
(b) Magnets always increase their temperature
(c) Magnets make them heavier
(d) Magnets turn them into plastic
Answer: (a) Strong magnetic fields may affect their functioning
Q20. Which of the following is an example of a temporary magnet?
(a) An iron object that becomes magnetic when placed near a magnet
(b) A wooden stick
(c) A glass sheet
(d) A rubber band
Answer: (a) An iron object that becomes magnetic when placed near a magnet
Q21. What is magnetic attraction?
(a) The force by which a magnet pulls a magnetic material towards itself
(b) The force by which a magnet produces heat
(c) The force that makes objects glow
(d) The force that changes water into ice
Answer: (a) The force by which a magnet pulls a magnetic material towards itself
Q22. What is magnetic repulsion?
(a) The force by which unlike poles attract
(b) The force by which like poles push each other away
(c) The force produced by gravity
(d) The force that produces light
Answer: (b) The force by which like poles push each other away
Q23. Which of the following pairs contains only magnetic materials?
(a) Iron and steel
(b) Wood and plastic
(c) Glass and rubber
(d) Paper and wood
Answer: (a) Iron and steel
Q24. Why is a compass needle able to indicate direction?
(a) It is magnetic and aligns approximately along the north-south direction
(b) It contains a battery
(c) It is made of plastic
(d) It is attracted by sunlight
Answer: (a) It is magnetic and aligns approximately along the north-south direction
Q25. Which statement correctly describes the behaviour of magnets?
(a) Like poles repel and unlike poles attract
(b) Like poles attract and unlike poles repel
(c) All poles attract
(d) All poles repel
Answer: (a) Like poles repel and unlike poles attract
