6th Std Science Lesson Wise Questions in English – Part 2
6th Science Lesson 13 Questions in English
13] Magnetism
1. In which form Magnets were found naturally?
a) Soil
b) Rocks
c) Ore
d) Gaseous
Explanation
About 2500 years ago magnetic rocks were found in a place called Magnesia. Those rocks were attracted to iron materials. More of these rocks were found worldwide.
2. The ore of magnets are called as?
a) Magnus
b) Magnetite
c) Magnesia
d) Magnum
Explanation
The magnetic rocks found naturally are called as magnets. The ore is called as magnetite which was named after the boy Magnus and the place Magnesia where it was found.
3. What are the other names of the Natural Magnets?
a) Magnetic Stones
b) Leading stones
c) Lode stones
d) All the above
Explanation
Magnetite was the ore with the attracting property and it is called as Natural Magnets. These are also called as Natural Magnets, Leading Stones, and lode stones.
4. Which of the following is not an artificial magnet?
a) Bar-magnet
b) Ring magnet
c) Ferrite magnet
d) Needle magnet
Explanation
Bar-magnet, Horseshoe magnet, Ring magnet and Needle magnet are generally used artificial magnets.
5. Which of the following statement is/are wrong?
i) Natural magnets used to find the directions
ii) Natural magnets have a defined shape
iii) These ores have attracting property
a) i only
b) i and iii
c) ii only
d) All the above
Explanation
Natural magnets or magnetite are the ore with attracting property. These do not have a defined shape and it is mainly used for finding the directions.
6. Name the process of changing the piece of iron into magnets?
a) Galvanization
b) Magnetization
c) Ionization
d) Carbonization
Explanation
The Method of converting the iron piece into magnet artificially is called as Magnetization. Magnets of these types are called as Artificial Magnets.
7. Assertion (A): Papers and plastics materials are called as non-magnetic substances.
Reasoning(R): Non-magnetic substances are not attracted by magnets.
a) Both A and R is True and R is the correct explanation of A.
b) Both A and R is True but R is not the correct explanation of A.
c) A is True but R is False.
d) Both A and R is False
Explanation
Substances which are not attracted by magnet are called non-magnetic substances. Paper, plastic are called non-magnetic substances.
8. Match the following
i) Magnetic substances A. Ring magnets
ii) Non-Magnetic Substances B. Lode stone
iii) Artificial Magnets C. Plastic
iv) Natural Magnets D. Iron
a) BDCA
b) DCAB
c) ABDC
d) CDAB
Explanation
Magnetic substances are attracted by Magnets (Iron, Cobalt, and Nickel). A Non-magnetic substance is not attracted by magnets (Paper, plastic). Artificial Magnets are available in various form and shapes like Horse shoe, Needle, Ring, Oval, Bar, Disc. Natural magnets are also called as Lead stones and Lode stones.
9. The Magnets has high attractive forces near the,
a) Two ends
b) Parallel ends
c) Center part
d) Edges
Explanation
The Attractive forces of the magnets are very large near the two ends of the magnet which are called as poles.
10. In which direction a freely suspended magnet always come to rest position?
a) West-East
b) South-North
c) North-South
d) East-West
Explanation
The Magnets comes to rest position roughly in North-South direction when it is suspended freely. The end points are called as North and South Poles.
11. Which country navigators used the load stone to find directions?
a) Romans
b) Chinese
c) Egyptians
d) Sumerians
Explanation
Around 800 years ago, the Chinese discovered the directive property of magnets. They used load stones in their boats to find directions during storm and mist.
12. The Marked end of the needle in a magnetic compass is the ____ pole of the magnet.
a) North
b) South
c) West
d) East
Explanation
A Compass is an instrument which is used to find directions in ships and airplanes. It has a magnetic needle that can rotate easily. The marked end of the needle denotes the north pole of the magnet.
13. In which of these applications compass is used?
a) Ships
b) Airplanes
c) Mountain climbers
d) All the above
Explanation
A compass is an instrument which is used to find directions. It is mostly used in ships and airplanes. As a rule, mountaineers also carry a compass with them so that they do not lose their way in unknown places.
14. Which of the following statements is not true?
a) The Unlike poles of two magnet always Repel each other.
b) Repulsion occurs at same poles of different magnets.
c) The similar poles of different magnet attract towards each other.
d) Attraction occurs at unlike poles of different magnets.
Explanation
The Opposite poles of different magnets attract each other similarly the same poles repel each other. These properties are called as Attraction and Repulsion nature of magnets.
15. When the magnets will lose their properties?
a) Heated
b) Galvanized
c) Carbonized
d) Electrolysis
Explanation
Magnets lose their properties if they are heated, hammered, Dropped from heights and placed near the cellphone, Computer.
16. Which is used as a magnetic keeper to store the magnets properly?
a) Soft iron
b) Coal
c) Copper
d) Tin
Explanation
Proper storage of magnets is also needed to preserve their properties. Soft iron should be placed across their ends.
17. What are the applications of magnets?
a) Speakers
b) Toys
c) Small motors
d) All the above
Explanation
Magnets are used in various equipment’s in day to day life. Speakers, Toys, bags, Compass, Magnetic crane, Medical field, Stickers and Door Locks.
18. Which train uses the levitation technique of magnets?
a) Maglev
b) Light rail
c) High speed trains
d) Metro
Explanation
Maglev is Magnetic Levitation which uses the property of magnetic attraction and repulsion to run these super-fast electromagnetic trains.
19. Name the country which uses the Maglev train for public transport?
a) North Korea
b) Europe
c) Japan
d) America
Explanation
Many of the countries are trying to use the Maglev train for public transport. Mainly China, Japan, South Korea currently using this train for transports.
20. Electromagnetic train is also called as
i) Suspension train
ii) Electric train
iii) Flying train
iv) Monorail
a) i and ii
b) i and iii
c) ii and iv
d) i and iv
Explanation
Electromagnetic train works under the concept of the levitation of magnets. It does not require petrol or diesel. This Electromagnetic train also called as Suspension train or Flying train.2
21. Which is used to change the direction of poles in an electromagnetic train?
a) Current
b) Voltage
c) Magnetic Field
d) Power
Explanation
The Electro magnets used in the electromagnetic trains are magnetized by the current flown through that. When the direction of this current flow is changed the poles are also changed.
22. How the Electromagnetic trains achieve high speed compared to other trains?
a) High Current flow
b) Magnetic Fields
c) No Friction
d) Power Gain
Explanation
The Magnets of the electromagnetic train are controlled by the current passing through it. These magnets are attached on sides of the track and in the bottom sideway of the train. As there are no moving parts there is no friction so the train can attain high speed than other techniques.
23. What are the features of Electromagnetic trains?
a) No Friction
b) Less noise
c) Less energy
d) All the above
Explanation
Electromagnetic trains are known for their high speed because of No friction and it is also produce less noise and it is Eco friendly. It requires very less energy for its operation.
24. Which one is the not associated with the property of magnets?
a) Attraction
b) Repulsion
c) Direction
d) Fluctuation
Explanation
The Magnets are used for finding the direction. The unlike poles of any two different magnets attract each other and the same poles attracted towards each other. Using these principles electromagnetic train is operated.
25. Which is not a magnetic material?
a) Wood
b) Iron
c) Needle
d) Nickel
Explanation
Wood is not attracted to magnets and it is not a magnetic material. All other materials listed above have the tendency to attract towards magnet.
26. Which of the following does not affect the properties of a magnet?
a) Computer
b) Television
c) Cork
d) Speaker systems
Explanation
Magnets lose their properties when they are placed near Cellphone, Computer, DVDs. These objects will also get affected by magnetic field.
27. Which of these will make the magnet to lose their properties?
a) Improper storage
b) Heating a magnet
c) Hitting with a hammer
d) All the above
Explanation
Improper storage can also cause magnets to lose their properties. To keep them safe, bar magnets should be kept in pairs with their unlike poles on the same side. They must be separated by a piece of wood and two pieces of soft iron should be placed across their ends. Magnets lose their properties if they are heated or dropped from a height or hit with a hammer.