Chapter-7 Magnetism — Online MCQ Test
SCIENCE · Samacheer Kalvi 8th · Tamil Nadu State Board
Practice Chapter-7 Magnetism with a free chapter-wise online MCQ test.
This chapter covers: magnet field poles Explains properties of magnets magnetic fields and their uses.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-7 Magnetism — Important Questions & Answers
Which of the following is a natural magnet?
- A. Iron nail
- B. Lodestone
- C. Steel key
- D. Copper wire
Answer: B. Lodestone
Lodestone is a naturally occurring magnet. The other items are not natural magnets.
Lodestone is a naturally occurring magnet. The other items are not natural magnets.
The region of a magnet where its magnetic force is strongest is called its ____.
- A. center
- B. axis
- C. pole
- D. surface
Answer: C. pole
The magnetic force is maximum at the poles of a magnet.
The magnetic force is maximum at the poles of a magnet.
Which of the following materials is most suitable for making a permanent magnet?
- A. Soft iron
- B. Plastic
- C. Steel
- D. Wood
Answer: C. Steel
Steel is suitable for permanent magnets because it retains magnetism for a longer time.
Steel is suitable for permanent magnets because it retains magnetism for a longer time.
A magnet attracts a paper clip more strongly when the paper clip is closer to the magnet. What does this show?
- A. Magnetic force decreases with distance
- B. Magnetic force increases with distance
- C. Magnetism is present only in paper clips
- D. The paper clip is made of plastic
Answer: A. Magnetic force decreases with distance
Magnetic force is stronger near the magnet and becomes weaker as the distance increases.
Magnetic force is stronger near the magnet and becomes weaker as the distance increases.
Which of the following is the correct statement about magnetic field lines?
- A. They start from south pole and end at north pole outside the magnet
- B. They never cross each other
- C. They are visible without any aid
- D. They exist only inside the magnet
Answer: B. They never cross each other
Magnetic field lines do not intersect each other. If they crossed, the field would have two directions at one point, which is impossible.
Magnetic field lines do not intersect each other. If they crossed, the field would have two directions at one point, which is impossible.