Class 6 Exam  >  Class 6 Notes  >  Science Class 6  >  NCERT Exemplar Solutions: Fun with Magnets

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6 PDF Download

Multiple Choice Questions

Q1: Observe the pictures A and B given in fig 13.1 carefully.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6Which of the following statement is correct for the above given pictures?
(a) In A, cars 1 and 2 will come closer and in B, cars 3 and 4 will come closer.
(b) In A, cars 1 and 2 will move away from each other and in B, cars 3 and 4 will move away.
(c) In A, cars 1 and 2 will move away and in B, 3 and 4 will come closer to each other.
(d) In A, cars 1 and 2 will come closer to each other and in B, 3 and 4 will move away from each other.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Ans: (d)
In A, cars 1 and 2 will come closer to each other and in B, 3 and 4 will move away from each other.
Unlike poles attract each other while like poles repel each other.
In case A: cars 1 and 2 are facing each other with opposite poles hence they get attracted.
In case B: cars 3 and 4 are facing each other with the same poles hence they get repelled.

Q2: The arrangement to store two magnets is shown by figures (a), (b), (c) and (d) in fig 13.2. Which one of them is the correct arrangement?
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Ans: (b)
option ‘b’ is the correct arrangement.

Q3: Three magnets A, B and C were dipped one by one in a heap of iron filing. Figure 13.3 shows the amount of the iron filing sticking to them.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6The strength of these magnets will be
(a) A > B > C
(b) A < B < C
(c) A = B = C
(d) A < B > C

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Ans: (a)
The amount of the iron filing sticking to magnets is directly proportional to their strengths.

Q4: North pole of a magnet can be identified by
(a) Another magnet having its poles marked as North pole and South pole.
(b) Another magnet no matter whether the poles are marked or not.
(c) Using an iron bar.
(d) Using iron filings.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Ans: (a)
Another magnet having its poles marked as the north pole and south pole.

Q5: A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filing clinging to the
(a) North Pole is almost equal to the South Pole.
(b) North pole is much more than the South Pole.
(c) North pole is much less than the South Pole.
(d) Magnet will be same all along its length.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Ans: (a)
Magnetic strengths of the North Pole and the South Pole of a magnet are same.

Very Short Answer Questions

Q6: Fill in the blanks.
(i) When a bar magnet is broken; each of the broken part will have _________ pole/poles.(ii) In a bar magnet, magnetic attraction is _____ near its ends.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

(i) two
(ii) more

Q7: Paheli and her friends were decorating the class bulletin board. She dropped the box of stainless steel pins by mistake. She tried to collect the pins using a magnet. She could not succeed. What could be the reason for this?

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

The pins are made of stainless steel which is a non-magnetic material. Hence Paheli was unsuccessful in collecting the pins using a magnet.

Q8: How will you test that ‘tea dust’ is not adulterated with iron powder?

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

We can use a magnet to test that tea dust is not adulterated with iron powder. If it has iron powder it will stick to the magnet.

Q9: Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown in fig 13.4.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6(i) Which regions of the magnet have more iron filings sticking to it?
(ii)What are these regions called?

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

 (i) The ends of the magnet have more iron filings attached to it.
(ii) Magnets have two poles, namely the North Pole and the South Pole. Hence, these regions are called poles of the magnet.

Short Answer Questions

Q10: Four identical iron bars were dipped in a heap of iron filings one by one. Figure shows the amount of iron filings sticking to each of them.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6(a) Which of the iron bar is likely to be the strongest magnet?
(b) Which of the iron bars is not a magnet? Justify your answer.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

(a) Iron bar (a) is likely to be the strongest magnet since more amount of iron filings have stuck to the magnet than any other bars.
(b) Iron bar (b) is not a magnet since none of the iron filings sticks to the magnet.

Q11: A toy car has a bar magnet laid hidden inside its body along its length. Using another magnet how will you find out which pole of the magnet is facing the front of the car?

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

We know that unlike poles attract each other while like poles repel each other. In case of a toy car, if the front of the toy car gets attracted to the north pole of the given magnet then it is the south pole of the bar magnet hidden inside the car and vice-versa.

Q12: Match column I with column II (One option of A can match with more than one option of B.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Here is the correct match:
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

Q13: You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

There can be following ways to identify the magnet out of the two identical metal bars:
(i) By attracting iron filings to the magnet we get to know which is a magnet.
(ii) By using another magnet. If it is a magnet, like poles will repel each other while unlike poles will attract each other.

Long Answer Questions

Q14: Three identical iron bars are kept on a table. Two out of three bars are magnets. In one of the magnet the North-South poles are marked. How will you find out which of the other two bars is a magnet? Identify the poles of this magnet.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

The magnet on which the North-South poles are marked can be used to find the magnet out of two bars.
Take the magnet with North-South poles are marked, keep it close to both the iron bars, hence both magnets get attracted to it since both are magnets.
To find out the poles of an unknown magnet, we can use the repulsion test. North pole marked on the given magnet will repel the north pole of the unknown magnet and vice-versa.

Q15: Describe the steps involved in magnetising an iron strip with the help of a magnet.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

An iron strip can be magnetised by rubbing it with a magnet in a particular direction again and again as shown in below figure.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6Here are the steps involved:

  • Consider a wooden table and place the desired iron strip which has to be magnetised.
  • Now take a bar magnet where, one end of the magnet is held in the hands and the other end is on one edge of the strip.
  • Rub the magnet again and again, without lifting along the length of the strip.
  • Repeat the above steps several times.
  • Take the iron fillings and extend it on the strip. If it gets attracted the strip gets magnetised and if it does not then repeat the steps few more times.

Q16: Figure 13.6 shows a magnetic compass. What will happen to the position of its needle if you bring a bar magnet near it? Draw a diagram to show the effect on the needle on bringing the bar magnet near it. Also draw the diagram to show the effect when the other end of the bar magnet is brought near it.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer
The magnetic needle of the compass will get deflected.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

Q17: Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

To prepare a magnetic compass, place the given iron needle on a wooden table now magnetize by rubbing a bar magnet over it repeatedly in a particular direction without lifting it. After that, it may be set in a way so that it can rotate freely when suspended. Hence, the iron needle can act as a compass and give north-south direction.

Q18: Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in fig 13.7.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6What inference could he draw from this observation? Explain.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

He could infer from this observation that the iron bar is induced with magnetic properties and iron bar acts as a magnet till the magnet is kept near it.

Q19: A bar magnet is cut into two pieces A and B, from the middle, as shown in figure 13.8.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6Will the two pieces act as individual magnets? Mark the poles of these two pieces. Suggest an activity to verify your answer.

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

Yes, the two broken pieces A and B will act as individual magnets. A magnet will always have two poles – the North and South Pole. Hence, now each piece will have two poles. By using the test of repulsion between the newly formed magnets we can detect the poles of broken magnets.

Q20: Suggest an arrangement to store a U shaped magnet. How is this different from storing a pair of bar magnets?

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6  View Answer

U shaped magnet – One metal plate is placed across the two poles of the U shaped magnet to store it.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6Bar magnet – Two metal plates and one wooden block is used and arranged as shown in the figure.
NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

The document NCERT Exemplar Solutions: Fun with Magnets | Science Class 6 is a part of the Class 6 Course Science Class 6.
All you need of Class 6 at this link: Class 6
99 videos|261 docs|49 tests

Top Courses for Class 6

FAQs on NCERT Exemplar Solutions: Fun with Magnets - Science Class 6

1. What are the different types of magnets?
Ans. There are mainly three types of magnets: permanent magnets, temporary magnets, and electromagnets. Permanent magnets are made from materials that maintain their magnetic properties, like neodymium and ferrite. Temporary magnets are made from materials that become magnetic only when in the presence of a magnetic field. Electromagnets are created when electric current flows through a wire coil, producing a magnetic field.
2. How do magnets attract or repel each other?
Ans. Magnets attract or repel each other based on their magnetic poles. Every magnet has two poles: a north pole and a south pole. Like poles repel each other (north-north or south-south), while opposite poles attract (north-south). This interaction is due to the magnetic field produced by the magnets.
3. What is the Earth's magnetic field and how does it work?
Ans. The Earth has its own magnetic field, which is similar to that of a giant magnet tilted about 11 degrees from the rotational axis. This magnetic field is generated by the movement of molten iron and other metals in the Earth's outer core. It affects compass needles, making them align with the Earth's magnetic field, pointing towards the magnetic north.
4. How can we make a simple magnet at home?
Ans. You can make a simple magnet at home by taking a piece of iron or steel and rubbing it with a magnet in one direction for several strokes. This process aligns the magnetic domains in the metal, turning it into a temporary magnet. To test it, you can see if it attracts small metal objects like paper clips or pins.
5. What are some practical applications of magnets in everyday life?
Ans. Magnets have numerous practical applications in everyday life. They are used in various devices such as refrigerators, speakers, and magnetic compasses. Additionally, they play a crucial role in electric motors, generators, and magnetic storage media like hard drives. Magnets are also used in healthcare, such as in MRI machines for imaging.
99 videos|261 docs|49 tests
Download as PDF
Explore Courses for Class 6 exam

Top Courses for Class 6

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

mock tests for examination

,

MCQs

,

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

,

Free

,

study material

,

past year papers

,

shortcuts and tricks

,

Important questions

,

Viva Questions

,

ppt

,

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

,

Objective type Questions

,

Sample Paper

,

Semester Notes

,

video lectures

,

Extra Questions

,

NCERT Exemplar Solutions: Fun with Magnets | Science Class 6

,

practice quizzes

,

pdf

,

Previous Year Questions with Solutions

,

Summary

,

Exam

;