Which of the following statements are correct? Rewrite the incorrect ones correctly.
(a) A magnet will be attracted to the aluminium frame of a window.
(b) A magnet will not lose its magnetism even if it is repeatedly dropped on the floor.
(c) When a magnet is dipped into a box of paper clips, most of them will be seen sticking to the ends of the magnet.
(d) A magnet need not always have two poles.
(e) Magnetic poles that are alike attract each other.
(f) If a magnet is floated on a cork in water and balanced, one end will point east and the other end will point west.
(g) Both the ends of a solid bar are attracted to both poles of a magnet. The bar could be a magnet.
(h) Unlike magnetic poles attract each other.
(i) Iron can be used to make permanent magnets.
(j) Compasses work best when they are placed near iron objects.

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Solution

(a) Incorrect
A magnet will not be attracted to the aluminium frame of a window.

(b) Incorrect
A magnet will lose its magnetism if it is repeatedly dropped on the floor.

(c) Correct

(d) Incorrect
A magnet always has two poles.

(e) Incorrect
Magnetic poles that are alike repel each other.

(f) Incorrect
If a magnet is floated on a cork in water and balanced, one end will point north and the other end will point south.

(g) Incorrect
Both the ends of a solid bar are attracted to both the poles of a magnet. The bar could be a metal made of steel, iron, nickel and cobalt.

(h) Correct

(i) Incorrect
Steel can be used to make permanent magnets.

(j) Incorrect
Compasses work best when they are not placed near iron objects.

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Question 6

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