Class 6 Science Chapter 10 MCQ

Here, are all the statements are correct. Hence, your answer will be option [D].

The pieces of magnetite rock are known as natural magnets.

The region of a magnet where the attraction of magnet is the strongest are called poles of the magnet. We know that a magnet has always two poles (whatever its shape may be), one pole of the magnet is called north pole and the other pole of magnet is called south pole. If a bar magnet is put into a heap of iron filings, then the iron filings will clinging to it or stick to it. The maximum amount of iron filings cling to the two ends of the bar magnet because some force of attraction also exists in the middle part of the bar magnet but it is very small.

Here, are all the statements are correct. Hence, your answer will be option [D].

The magnets lost their property of magnetism if they are heated strongly, hit with a hammer or dropped from a height. In other words, if a magnet is heated, hammered or dropped on floor, its magnetism is a destroyed (or demagnetized). It no longer remains a magnet. A magnet will not lose its magnetic properties when it is passing from electric current.

Here, are all the statements are correct. Hence, your answer will be option [D].

Those materials which are attracted by magnet are called magnetic materials. Iron, steel, nickel and cobalt are attracted by magnet. So, iron, steel, nickel and cobalt are magnetic materials. The most common and important magnetic materials are however Iron and Steel.

Actually, there is a steel blade in the middle of sharpener. It is due to the presence of a steel blade (which is magnetic) in the middle of a sharpener. That is attracted by a magnet. Remember, magnet do not attract non-magnetic materials, magnet attracts only magnetic materials.

Every magnet, whether big or small, has a north pole and south pole. The end of magnet which points towards the north direction is called north-seeking end or north pole of the magnet. The end of magnet which points towards the south direction is called south-seeking end or south pole of the magnet. It is impossible to have a magnet having only one pole.

Two poles of a magnet are the point inside a magnet where magnetic effects (attraction or repulsion) is strongest. It can be understand very easily. For example, if a bar magnet is put into a heap of iron filings, then the iron filings will clinging to it or stick to it. The maximum amount of iron filings cling to the two ends of the bar magnet because some force of attraction also exists in the middle part of the bar magnet but it is very small.

The end of magnet which points towards the north direction is called north-seeking end or north pole of the magnet. The end of magnet which points towards the south direction is called south-seeking end or south pole of the magnet. It is impossible to have a magnet having only one pole. Every magnet, whether big or small, has a north pole and south pole. In any condition, when we cut a magnet in two parts, we get two magnets each with north and south pole.

The compass is an instrument to find the direction at a place. The compass is based on the property of a freely pivoted magnet to align itself along the north-south direction. The compass has a tiny magnet in the form of a needle which can rotate freely on a pivot or pin. The pivoted magnetic needle of a compass is enclosed in a small brass box having a glass top. The needle of compass always comes to rest along the north-south direction. A compass helps the people to find their way.

Copper, rubber, glass are non-magnetic material. Generally, those material which are not attracted by a magnet are called non-magnetic materials. Those materials which are attracted by magnet are called magnetic materials. Iron, steel, nickel and cobalt are attracted by magnet. So, iron, steel, nickel and cobalt are magnetic materials.

Those materials which are attracted by magnet are called magnetic materials. Iron, steel, nickel and cobalt are attracted by magnet. So, iron, steel, nickel and cobalt are magnetic materials. The most common and important magnetic materials are however Iron and Steel. Hair pins, paper clips, iron nails all are made of either of iron or steel. So, iron, steel, nickel and cobalt are magnetic materials.

The compass is an instrument to find the direction at a place. The compass is based on the property of a freely pivoted magnet to align itself along the north-south direction. The compass has a tiny magnet in the form of a needle which can rotate freely on a pivot or pin. The pivoted magnetic needle of a compass is enclosed in a small brass box having a glass top. The needle of compass always comes to rest along the north-south direction. A compass helps the people to find their way. A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object) A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. An anchor is a device, normally made of metal, used to connect a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current.

We know that there are two most important properties of magnets are: i) A freely suspended magnet always point in the north south directions and ii) Like magnetic poles repel each other, unlike magnetic poles attract each other.

The magnets lost their property of magnetism if they are heated strongly, hit with a hammer or dropped from a height. In other words, if a magnet is heated, hammered or dropped on floor, its magnetism is a destroyed (or demagnetized). It no longer remains a magnet.

The magnetic and non-magnetic properties of various objects are made use of in our day to day life. We know that magnets attract only magnetic materials. Due to this property, we use magnet as different ways. Such as magnets are used in door stoppers in home and offices to hold the door open. Magnets are also used in some pencil boxes to keep their lids shut tightly and so on.

The magnets lost their property of magnetism if they are heated strongly, hit with a hammer or dropped from a height. In other words, if a magnet is heated, hammered or dropped on floor, its magnetism is a destroyed (or demagnetized). It no longer remains a magnet. We should store the magnets properly (when not in use).

Here, are all the statements are correct. Hence, your answer will be option [D].

The magnets made by using electricity are called electromagnets. Electromagnets are very useful because their magnetism or power of attraction can be switched “on” or “off” as desired. That means it is temporary magnet. As an example, if the electric current is switched on through its coil the electromagnet gets its magnetism and starts behaving like a magnet, when it is switched off the electromagnet losses all its magnetism that means (it no longer behaves as a magnet). So, it is considered as temporary magnet.

In this high advance technical era, we use the global positioning system (GPS) for navigation which tells us about direction and our position on earth.

A freely suspended magnet always point in a north-south direction.

Here, are all the statements are correct. Hence, your answer will be option [D].

A nickel wire is attracted by magnet. Those materials which are attracted by magnet are called magnetic materials. Iron, steel, nickel and cobalt are attracted by magnet. So, iron, steel, nickel and cobalt are magnetic materials. The most common and important magnetic materials are however Iron and Steel.