Ncert- CLASS 6 – SCIENCE- Chapter 10: Fun with Magnets Welcome to your Ncert- CLASS 6 - SCIENCE- Chapter 10: Fun with Magnets 1. When the N-pole of a magnet is placed near the S-pole of another magnet then it the south pole. 2. All magnetic materials lose their magnetic properties when: Strongly heated Dipped in water Dipped in oil Brought near a piece of iron None 3. Which of the following is used to make permanent magnets ? Soft iron Nichrome Steel Copper None 4. The magnetic field is strongest near the : Ends of the magnet Poles of the magnet Centre of the magnet One quarter point from the poles of the magnet None 5. Two bars of soft iron exactly alike are given. One of them is a magnet. Without using anything more, how would you find which is a magnet - By bringing two bars near and noting which one is repelling. One which repels is an ordinary iron. By bringing two bars near and noting which one is attractive. The attracting one is a magnet By rubbing one bar with the other and noting which becomes a magnet. The bar which is magnetized is an ordinary iron. One bar is placed flat horizontally on the table and the other bar is held vertical with its one end on the middle of the first bar. If there is the attraction between the two, the vertical bar is magnet otherwise ordinary iron. None 6. Which of the following will NOT be attracted by a magnet? Gold Nickel Iron Cobalt None 7. All magnetic materials lose their magnetic properties when : Dipped in water Strongly heated Dipped in oil Brought near a piece of iron None 8. The magnet can be completely demagnized by Breaking the magnet into small pieces A reverse field of appropriate strength Heating it slightly Dropping it into ice cold water None 9. Assertion: Steel is attracted by a magnet Reason: Steel is not a magnetic substance A is true, but R is false Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not correct explanation of A. A is false, but R is true None 10. A permanent magnet Attracts some substances and repels others Attracts all substances Attracts only ferromagnetic substances Attracts magnetic substances and repels all others None 11. Where is the attractive property of a magnet is maximum ? mid point of the magnet. north and south poles both north pole only south pole only None 12. The special property of magnetic substance is they are repelled by magnets they are attracted towards magnets they cannot be made into magnets they are both attracted and repelled by magnets None 13. Find the odd one out :Magnetite, Magnes, Magnesia, Bar magnet 14. Few common pins are placed on a table with a glass top. A powerful bar magnet is moved under the glass top. Describe the movement of common pins. move opposite to the direction of magnet be thrown up in air. not move move in the direction of magnet None 15. Magnetite contains which metal ? 16. What does a student need to do to find out whether a material is a magnet? Find out if the material can be repelled by a compass. Find out if the material is a metal or a non-metal. Find out if the material can be attracted to a steel plate. Find out if the material is a conductor or a non-conductor. None 17. A magnet can be easily turned into a ______ by excessive heating. Fill in the blank. None Temporary Magnet Permanent Magnet Electromagnet None 18. When the north pole of a strong magnet is brought near to the north pole of a weak magnet then they will First repel and then attract Attract each other First attract and then repel Repel each other None 19. Which of the following is not a magnetic substance? Iron Cobalt Brass Nickel None 20. The force of attraction of a magnet is maximum at : the midpoint its sides its poles its corners None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
