CBSE Questions for Class 6 Physics Fun With Magnets Quiz 1 - MCQExams.com

What does a student need to do to find out whether a material is a magnet?
  • Find out if the material is a metal or a non-metal.
  • Find out if the material is a conductor or a non-conductor.
  • Find out if the material can be attracted to a steel plate.
  • Find out if the material can be repelled by a compass.
State True or False.
North and south poles repel each other.
  • True
  • False
A bar magnet consists of
  • two poles of different nature and different strength
  • equal poles in magnitude
  • equal and opposite magnetic poles
  • opposite poles
Which effect of force is caused by the magnetic force between a magnet and a magnetic substance?
  • Change of position.
  • Change of shape.
  • Change of physical state.
  • Change of chemical nature.
The presence of magnetic field at a point can be detected by
  • ammeter 
  • galvanometer
  • a compass needle
  • strong magnet
A permanent magnet
  • attracts all substances
  • attracts only ferromagnetic substances
  • attracts magnetic substances and repels all others
  • attracts some substances and repels others
Which of the following helps detecting the presence of magnetic field at a point ?
  • a strong magnet
  • a solenoid
  • a compass needle
  • a current carrying wire
The N-pole of a compass points to the .............. pole of a permanent magnet
  • north
  • south-east
  • south
  • north-east
Which of the following will help demagnetizing a magnet ?
  • Hammering the magnet
  • Putting it in the water
  • Cooling it
  • Putting in contact with iron
Which of the following is not true?
  • We can magnetize an iron ring
  • We cannot isolate a single pole
  • A permanent magnet does not retains its magnetism if they are hammered
  • A permanent magnet retains its magnetism even when heated on a flame
_______ is the surest test of magnetism.
  • Attraction
  • Repulsion
  • No change
  • None of the above

A marine compass is used to
  • compare magnetic moments
  • determine $$H$$
  • determine direction
  • determine dip at a place
A bar magnet is heated strongly. Its magnetic strength
  • is likely to remain same
  • is likely to increase
  • is likely to decrease
  • none of the above
Which one of the following substances is the magnetic substance?
  • Mercury
  • Iron
  • Gold
  • Silver
What kind of magnet  is used in a magnetic compass ?
  • electromagnet
  • permanent magnet
  • temporary magnet
  • none of the above
What is the circular enclosure that the magnetic compass is placed in ?
  • iron case
  • stainless steel case
  • aluminium case
  • nickel case
Which of the following is not attracted by a magnet?
  • bronze
  • steel
  • nickel
  • cobalt
The marked end of a compass needle always points directly to
  • Earth's geographic South Pole
  • Earth's geographic North Pole
  • A magnet's south pole
  • A magnet's north pole
How will hammering a bar magnet affect Its magnetic strength?
  • Is likely to increase
  • Is likely to decrease
  • Will not change
  • None of the above
State whether true or false:
A tracing needle is used by the sailor for navigation.  
  • True
  • False
All magnets ___________.
  • Attract certain metals
  • Attract or repel another magnet
  • Both $$(1)$$ and $$(2)$$
  • Neither $$(1)$$ and $$(2)$$
When the north poles of two bar magnets are brought close together, there will be
  • no force
  • a downward force
  • a force of attraction
  • a force of repulsion
Shaving blades are usually made of steel. They will
  • Be attracted by a magnet
  • Be repelled by a magnet
  • Be attracted only by natural magnets
  • Not be affected by magnets
For performing practical in lab ................ magnets are used
  • toroids
  • solenoids
  • horse shoe magnet
  • bar magnet
Magnetism at the centre of a bar magnet is
  • minimum
  • maximum
  • zero
  • minimum or maximum
All magnetic materials lose their magnetic properties when:
  • Dipped in water
  • Dipped in oil
  • Brought near a piece of iron
  • Strongly heated
The south seeking end is called _______ pole.
  • North
  • South
  • East
  • West
Fill in the blank:
A magnet has _______ poles
  • two
  • one
  • three
  • four
Magnetite contains which metal ?
  • Iron
  • Copper
  • Aluminium
  • Steel
The magnet can be completely demagnized by
  • Breaking the magnet into small pieces
  • Heating it slightly
  • Dropping it into ice cold water
  • A reverse field of appropriate strength
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