Fun with Magnets Test

Result

Fun with Magnets Test - 12

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Weekly Quiz Competition

Question 1
1 / -0

In which pair are both materials magnetic?

A
Aluminium and Copper

B
Copper and Iron

C
Iron and Steel

D
Steel and Aluminium

Solution

Iron is a magnetic material .
Steel is also a magnetic material as it is made up of iron.

So, both iron and steel are magnetic material.
Hence, correct option is C.
Question 2
1 / -0

Which of the following is correct about magnetic monopole?

A
Magnetic monopole exist

B
Magnetic monopole does not exist

C
Magnetic monopole have constant value of monopole momentum

D
The monopole momentum increase due to increase at its distance from the field

Solution

Magnetic monopole are hypothetical as they never came into existence.
B is the correct option.
Question 3
1 / -0

A magnet is placed in iron powder and then taken out, then maximum iron powder is at

A
North pole only

B
South pole only

C
The middle of the magnet

D
The ends of the magnet

Solution

Magnetic field is strongest at the ends so it will attract more iron powder than the other part.
Correct opt : D
Question 4
1 / -0

If a piece of metal was thought to be a magnet, which one of the following observations would offer conclusive evidence

A
It attracts a known magnet

B
It repels a known magnet

C
Neither (a) nor (b)

D
It attracts a steel screw driver

Solution

We know that repulsion is the sure test of magnetism that's why if a piece of metal is thought to be a magnet, it repels a known magnet.
Question 5
1 / -0

Which one of the following is a non-magnetic substance

A
$$ Iron $$

B
$$ Nickel $$

C
$$ Cobalt $$

D
$$ Brass $$

Solution

Magnetic substances are substances that get attracted to magnets. Few of the magnetic substances are - iron, steel, cobalt and nickel.
Non-magnetic substances are substances that do not get attracted by a magnet. Few of the materials are wood, plastic, copper, rubber, brass.
Question 6
1 / -0

Magnets cannot be made from which of the following substances

A
Iron

B
Nickel

C
Copper

D
All of the above

Solution

The substances which are not attracted by a magnet are called non-magnetic substances. Hence, magnets cannot be made from which of the following substances
For example, wood, paper, water, copper, glass, gold, silver, etc., are non-magnetic substances.
Hence Option D
Question 7
1 / -0

The presence of the magnetic field at a point can be detected by:

A
A strong magnet

B
A solenoid

C
A compass needle

D
A current-carrying wire

Solution

The presence of a magnetic field at a point can be detected by a compass needle.
In the presence of a magnetic field, the needle of the compass rests only in the direction of the magnetic field and in the absence of any magnetic field. the needle of the compass can rest in any direction. In the earth's magnetic field alone, the needle rests in the north-south direction.
Question 8
1 / -0

When a magnet is suspended freely in air with the help of string, it aligns itself in direction.

A
South - West

B
North - East

C
East - West

D
North - South

Solution

The tendecy of a magnet is to align itself along the magnetic field direction .So a freely suspended magnet rests in the North-South direction because Earth's Magnetic field is along North-South direction.
Question 9
1 / -0

Which of the following is a non-magnetic material?

A
Nickel

B
Wood

C
Iron

D
Cobalt

Solution

Materials which do not get attracted towards magnet are called non-magnetic materials.
In the given list, wood is a non-magnetic material.
Question 10
1 / -0

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
Pins do not stick at all.

E
None of the above

Solution

We know common pins are made up of stainless steel and steel when brought closer to a magnet or magnetic materials gets attracted towards the magnet and get stick to the magnet.
So the common pins will stick all around the magnet as every part of magnet will act as a magnetic material and will attract the pins.

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Re-Attempt Weekly Quiz Competition

Fun with Magnets Test - 12

Result

Fun with Magnets Test - 12

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SHARING IS CARING

Question 1

Aluminium and Copper

Copper and Iron

Iron and Steel

Steel and Aluminium

Solution

Question 2

Magnetic monopole exist

Magnetic monopole does not exist

Magnetic monopole have constant value of monopole momentum

The monopole momentum increase due to increase at its distance from the field

Solution

Question 3

North pole only

South pole only

The middle of the magnet

The ends of the magnet

Solution

Question 4

It attracts a known magnet

It repels a known magnet

Neither (a) nor (b)

It attracts a steel screw driver

Solution

Question 5

$$ Iron $$

$$ Nickel $$

$$ Cobalt $$

$$ Brass $$

Solution

Question 6

Iron

Nickel

Copper

All of the above

Solution

Question 7

A strong magnet

A solenoid

A compass needle

A current-carrying wire

Solution

Question 8

South - West

North - East

East - West

North - South

Solution

Question 9

Nickel

Wood

Iron

Cobalt

Solution

Question 10

Pins stick all around the magnet

Pins stick at the middle of the magnet

Pins stick at the ends of the magnet

Pins do not stick at all.

None of the above

Solution

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