CBSE Class 6 Science Fun with Magnets MCQs

Question. Three similar bar magnets, LM, PQ and XY were freely suspended next to one another. The diagram below shows what happened to the three magnets. Which of the following diagrams correctly shows what would happen when the magnets LM and XY are freely suspended near each other?

Answer : A

Question. The set up shows an apparatus for filtration.This apparatus can be used for separating which of the following mixtures?

(a) salt and sugar
(b) sugar and water
(c) glucose and water
(d) saw dust and water

Answer : B

Question. Some iron filings are arranged on the thin surface of a magnet as shown. The magnet is then turned upside down. Identify the picture which BEST shows the new arrangement of the iron filings:

Answer : B

Question. A bar magnet PQ is cut into two pieces as shown. One of the pieces PR is further cut into two pieces. Which of the following is true?

(a) SR will not be a magnet
(b) SR will be a magnet having North Poles at S and R.
(c) SR will be a magnet having North Pole at S and South Pole at R.
(d) SR will be a magnet having South Pole at S and North Pole at R.

Answer : C

Question. Anna left a bottle of water from the refrigerator on the table. After a while, she found water droplets on the outside of the bottle. This happened because
(a) cold water from the bottle was slowly leaking out.
(b) Anna spilled cold water as she removed the bottle from the refrigerator.
(c) water vapour from the surrounding air had condensed on the outside of the cold bottle.
(d) water from the bottle had evaporated into water vapour.

Answer : C

Question. Why is it easier to draw water from a well using a pulley instead of simply pulling a bucket up with a rope?

(a) The pulley helps us change the direction of the force.
(b) The pulley gives us the energy to pull the water up.
(c) The water weighs much less when a pulley is used.
(d) The water is pulled through a shorter distance with a pulley.

Answer : A

Question. The government health department has advised people in a city to take a cholera vaccine. Which of these could be responsible for spreading cholera in the city?
(a) contaminated (unclean) air
(b) presence of mosquitoes
(c) contaminated water
(d) open garbage dumps

Answer : C

Question. To find out if the rainfall in his town contains pollutants, which of these should Lokesh collect and study?
(a) one sample of rain water on a rainy day
(b) several samples of rain water on a rainy day
(c) several samples of rain water on several rainy days
(d) one combined sample of rain water over several rainy days.

Answer : C

Fun with Magnets

1. A substance which retains its magnetic properties for a long period is called a ____ 

a. magnetic substance 

b. non‐magnetic substance 

c. temporary magnet 

d. permanent magnet 

2. The north pole of the earth's magnet is near the geographical ____.   

a. West 

b. East 

c.  North 

d. South 

3. In ancient times rocks containing magnets are called_________ 

a. Magnet 

b. Magnetite 

c.  Iron 

d. freeze 

4.  A paper clip hanging in air; the possible reason could be: 

a. Black magic 

b. There is a magnet in the paper cup 

c.  There is water in the cup 

d. The water in the cup is hot 

5. The substances that get attracted towards a magnet are called_______ 

a. Magnetic 

b. Non magnetic 

c.  Transparent 

d. luminous 

6. Maximum iron filings stick in the _____of a bar magnet when it is brought near them. 

a.  Ends 

b.  Middle 

c.  Neither end nor middle 

d. All around equally 

7. The statue of a lady on the chariot of the emperor Hoang Ti, rests in such a position  that its extended arm always point towards ____ direction 

a.  Easy 

b.  West 

c.   North 

d.  south 

8. Like poles _________ 

a. Repel 

b. Merge 

c.  Dissolve 

d. Attract  

9. A magnet does not lose its property if it is __________. 

a. Heated 

b. Hammered  

c.  Dropped from a height 

d. Wetted with water 

10.  A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat moves towards the magnet if North Pole of the magnet is brought near its head. 

a. Boat is fitted with a magnet with north pole towards its head 

b. Boat is fitted with a magnet with south pole towards its head 

c.  Boat has a small magnet fixed along its length 

d. Boat is made up non‐magnetic material 

11. A rectangular piece of iron can be magnetized by rubbing it with 

a. A magnet from one end to the other end several times using both the poles alternatively. 

b. A magnet from one end to the other end several times using same pole of the magnet. 

c.  Another piece of iron several times 

d. The back of the pencil several times

1) When a magnet is suspended freely it always aligns itself in -------- direction?

a) North b) N-S c) N-W d) N-E

2) ---------- is the only natural magnet.

a) Magnetite b) Ebonite c) Cobalt d) Nickel

3) Which of the following cannot be used to make a magnet?

a) Cobalt b) Iron c) Ebonite d) Steel

4) Which of the following is not a non-magnetic substance?

a) Glass b) Wood c) China ware d) Nickel

5) Which of the following gets attracted to a magnet?

a) Copy book b) Silver spoon c) Comb d) Common pins

6) When a magnet is placed on a plastic plate with common pins spread on it, then ----

a) Pins stick all around the magnet b) Pins stick at the middle of the magnet c) Pins stick at the ends of the magnet d) None

7) The North end of the freely suspended magnet points towards -------?

a) Geographical North b) Geographical South c) Geographical East d) Geographical West

8) The south pole of the freely suspended magnet points towards -------?

a) Geographical North b) Geographical South c) Geographical East d) Geographical West

9) like poles of magnets -------- each other.

a) Attract b) Repel c)Both a and b d) None

10) Unlike poles of magnets -------- each other.

a) Attract b) Repel c) Both a and b d) None

11) ------------ is the surest test of magnetism.

a) Attraction b) Rotation c) Repulsion d) None

12) When a N pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, then it -----------?

a) Attracts b) Repels c) It rotates d) None

13)When a S pole a magnet in brought near the N pole of a freely suspended magnetic needle, then it -----------?

a) None b) Repels c) It rotates d) Attracts

14)____________is a device used by pilots and navigators used to find the direction.

a) barometer b) thermometer c) magnetic compass d) none

15) Magnetism of a magnet is lost by doing which of the following acts

a) Keeping in a box b) Heating c) Hammering d) Both b and c

16)Which of the following gets demagnetized when a powerful magnet is kept near it

a) Plastic ruler b) Compact disc c) Glass tumbler d) Wood

17) Which of the following does not get demagnetized when a powerful magnet is kept near it

a) CD b) music system c) Cell phone d) Comb

18) Electric bell is an example of _____________magnet.

a) Bar magnet b) Cylindrical magnet c) Electromagnet d) Horseshoe magnet

19)______________ type of magnet is used in cranes to lift heavy containers from ships.

a) Bar magnet b) Cylindrical magnet c) Electromagnet d) Horseshoe magnet

20) The nerves in our body transmits messages as __________

a) Electrical impulses b) Radio waves c) Electromagnetic waves d) None

ANSWER KEY FOR FUN WITH MAGNETS

1)b 2)a 3)c 4)d 5)d 6) c 7)a 8)b 9)b 10)a 11)c 12)b 13)d 14)c 15)d 16)b 17)d 18)c 19)b 20)a

Answer Key