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