Class 6 Magnetism MCQs

NCERT CBSE Curriculum

Practice 100+ Class 6 Magnetism MCQs for CBSE exams. Learn about magnets, magnetic and non-magnetic materials, poles, Earth's magnetism, electromagnets, and more. - with instant answers and performance report.

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Quick Revision: Magnetism

  • Magnet: An object that attracts certain materials like iron, steel, cobalt, and nickel.
  • Natural Magnets: Found in nature (e.g., magnetite/lodestone). Weak and irregular in shape.
  • Artificial Magnets: Man-made magnets in various shapes (bar, horseshoe, cylindrical). Much stronger than natural magnets.
  • Magnetic Materials: Attracted by magnets (e.g., iron, steel, nickel, cobalt).
  • Non-Magnetic Materials: Not attracted by magnets (e.g., wood, glass, brass, plastic).
  • Magnetic Poles: The ends of a magnet where the force of attraction is maximum. Every magnet has two poles: North (N) and South (S).
  • Law of Magnetism: Like poles repel each other; unlike poles attract each other.
  • Directive Property: A freely suspended magnet always rests in the North-South direction.
  • Magnetic Field: The space around a magnet where its influence can be felt.
  • Magnetic Induction: The process by which a magnetic substance becomes a temporary magnet in the presence of another magnet.
  • Temporary Magnets: Made of soft iron; lose magnetism quickly when the inducing field is removed.
  • Permanent Magnets: Made of steel; retain magnetism for a long time.
  • Electromagnet: A coil of wire wound around a soft iron core that behaves like a magnet when current flows through it.
  • Magnetic Keepers: Pieces of soft iron used to store magnets and prevent loss of magnetism.
  • Demagnetization: Loss of magnetic properties due to heating, hammering, dropping, or alternating current.
  • Earth's Magnetism: The Earth behaves like a giant magnet with its magnetic South pole near the geographic North.
  • Compass: A device with a magnetized needle that aligns with Earth's magnetic field to show direction.

Chapter Summary: Magnetism

Magnetism is the property of certain materials to attract iron, steel, cobalt, and nickel. The first magnets were discovered as naturally occurring minerals called magnetite or lodestone. Today, we use artificial magnets made in various shapes like bar magnets, horseshoe magnets, and cylindrical magnets. Magnetic materials are those that are attracted by a magnet, while non-magnetic materials are not.

Every magnet has two poles: a North pole and a South pole. Like poles repel each other, while unlike poles attract. A freely suspended magnet always aligns itself in the North-South direction, a property used in magnetic compasses for navigation. The space around a magnet where its influence is felt is called its magnetic field.

Magnetism can be induced in soft iron temporarily, while steel retains magnetism permanently. Electromagnets, which are created by passing electric current through a coil of wire, have many practical applications like electric bells and cranes. The Earth itself behaves like a giant magnet, which is why a compass needle points North. Understanding magnetism helps us appreciate its many uses in everyday life, from simple toys to complex technologies.

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