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Question (21)

QN003771

An iron nail, a glass bead, and a plastic cap are placed on a table. A magnet is moved near them. How many objects are expected to move toward the magnet?

(A) 0
(B) 1
(C) 2
(D) 3

Correct Answer: B

Explanation:

Only the iron nail is magnetic.

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Question (22)

QN003772

Which of the following statements is correct?

(A) All metals are magnetic.
(B) All magnetic materials are metals mentioned in the chapter.
(C) All objects are attracted by magnets.
(D) Only iron is attracted by magnets.

Correct Answer: B

Explanation:

Iron, nickel and cobalt are magnetic materials.

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Question (23)

QN003773

A student found that a material was not attracted by a magnet. The material is:

(A) Magnetic
(B) Non-magnetic
(C) A pole of magnet
(D) Artificial magnet

Correct Answer: B

Explanation:

Materials not attracted by magnets are non-magnetic.

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Question (24)

QN003774

Which item from a school bag is most likely to be magnetic?

(A) Plastic ruler
(B) Rubber eraser
(C) Steel sharpener blade
(D) Paper notebook

Correct Answer: C

Explanation:

Steel is attracted by magnets.

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Question (25)

QN003775

Out of 20 objects tested, 8 were magnetic. What percentage of the objects were magnetic?

(A) 20%
(B) 30%
(C) 40%
(D) 50%

Correct Answer: C

Explanation:

(8/20) × 100 = 40%.

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Question (26)

QN003776

A collection contains iron clips, wooden beads, plastic buttons, and glass pieces. If there are 6 iron clips and 14 other objects, how many objects will be attracted by a magnet?

(A) 6
(B) 8
(C) 14
(D) 20

Correct Answer: A

Explanation:

Only the iron clips are magnetic.

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Question (27)

QN003777

Which of the following observations would lead to the conclusion that a material is non-magnetic?

(A) It moves towards a magnet.
(B) It sticks to a magnet.
(C) It remains unaffected near a magnet.
(D) It hangs from a thread.

Correct Answer: C

Explanation:

Non-magnetic materials are not attracted by magnets.

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Question (28)

QN003778

A student tests four identical-looking rods. Only one is attracted by a magnet. The attracted rod is most likely made of:

(A) Glass
(B) Wood
(C) Iron
(D) Plastic

Correct Answer: C

Explanation:

Iron is a magnetic material.

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Question (29)

QN003779

If 15 objects are tested and 60% are non-magnetic, how many are magnetic?

(A) 6
(B) 9
(C) 10
(D) 12

Correct Answer: A

Explanation:

40% are magnetic. 40% of 15 = 6.

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Question (30)

QN003780

Which activity helps identify magnetic and non-magnetic materials?

(A) Heating the objects
(B) Measuring their mass
(C) Bringing a magnet near them
(D) Putting them in water

Correct Answer: C

Explanation:

Attraction by a magnet helps identify magnetic materials.

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Question (21)

An iron nail, a glass bead, and a plastic cap are placed on a table. A magnet is moved near them. How many objects are expected to move toward the magnet?

Explanation:

Link:

Question (22)

Which of the following statements is correct?

Explanation:

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Question (23)

A student found that a material was not attracted by a magnet. The material is:

Explanation:

Link:

Question (24)

Which item from a school bag is most likely to be magnetic?

Explanation:

Link:

Question (25)

Out of 20 objects tested, 8 were magnetic. What percentage of the objects were magnetic?

Explanation:

Link:

Question (26)

A collection contains iron clips, wooden beads, plastic buttons, and glass pieces. If there are 6 iron clips and 14 other objects, how many objects will be attracted by a magnet?

Explanation:

Link:

Question (27)

Which of the following observations would lead to the conclusion that a material is non-magnetic?

Explanation:

Link:

Question (28)

A student tests four identical-looking rods. Only one is attracted by a magnet. The attracted rod is most likely made of:

Explanation:

Link:

Question (29)

If 15 objects are tested and 60% are non-magnetic, how many are magnetic?

Explanation:

Link:

Question (30)

Which activity helps identify magnetic and non-magnetic materials?

Explanation:

Link:

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