Ncert- CLASS 6 – SCIENCE- Chapter 10: Fun with Magnets Welcome to your Ncert- CLASS 6 - SCIENCE- Chapter 10: Fun with Magnets 1. The special property of magnetic substance is they are both attracted and repelled by magnets they are attracted towards magnets they cannot be made into magnets they are repelled by magnets None 2. The magnet can be completely demagnized by Heating it slightly Breaking the magnet into small pieces Dropping it into ice cold water A reverse field of appropriate strength None 3. What does a student need to do to find out whether a material is a magnet? Find out if the material is a metal or a non-metal. Find out if the material is a conductor or a non-conductor. Find out if the material can be attracted to a steel plate. Find out if the material can be repelled by a compass. None 4. Assertion: Steel is attracted by a magnet Reason: Steel is not a magnetic substance A is false, but R is true 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 true, but R is false None 5. When the N-pole of a magnet is placed near the S-pole of another magnet then it the south pole. 6. A magnet can be easily turned into a ______ by excessive heating. Fill in the blank. None Temporary Magnet Permanent Magnet Electromagnet None 7. Which of the following is used to make permanent magnets ? Copper Nichrome Soft iron Steel None 8. Which of the following will NOT be attracted by a magnet? Gold Nickel Cobalt Iron None 9. 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 move in the direction of magnet be thrown up in air. not move None 10. All magnetic materials lose their magnetic properties when: Strongly heated Dipped in oil Dipped in water Brought near a piece of iron None 11. A permanent magnet Attracts only ferromagnetic substances Attracts some substances and repels others Attracts magnetic substances and repels all others Attracts all substances None 12. All magnetic materials lose their magnetic properties when : Dipped in oil Dipped in water Brought near a piece of iron Strongly heated None 13. Magnetite contains which metal ? 14. Find the odd one out :Magnetite, Magnes, Magnesia, Bar magnet 15. The force of attraction of a magnet is maximum at : the midpoint its poles its corners its sides None 16. 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 rubbing one bar with the other and noting which becomes a magnet. The bar which is magnetized is an ordinary iron. By bringing two bars near and noting which one is attractive. The attracting one is a magnet 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 17. The magnetic field is strongest near the : One quarter point from the poles of the magnet Poles of the magnet Centre of the magnet Ends of the magnet None 18. Where is the attractive property of a magnet is maximum ? north pole only north and south poles both south pole only mid point of the magnet. None 19. When the north pole of a strong magnet is brought near to the north pole of a weak magnet then they will Attract each other Repel each other First attract and then repel First repel and then attract None 20. Which of the following is not a magnetic substance? Nickel Cobalt Brass Iron 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.
