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Science [1 Marks Each] M.C.Q.

Electricity and Circuits · MP Board (MPBSE) STD 6 (Madhya Pradesh - English Medium). 217 questions.

Questions · Page 2 of 5

[1 Marks Each] M.C.Q.

MCQ 511 Mark
Electric cell converts:
  • A
    Electric energy into chemical energy.
  • B
    Heat energy into electric energy.
  • ✓
    Chemical energy into electric energy.
  • D
    Electric energy into light energy.
Answer
Correct option: C.
Chemical energy into electric energy.
The chemicals in the cell react to produce current.
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MCQ 521 Mark
In an electric circuit, the two terminals of the electric cell are:
  • A
    Connected directly to each other.
  • B
    Connected to the filament of the bulb.
  • ✓
    Connected to the two terminals of the bulb.
  • D
    All the above are correct.
Answer
Correct option: C.
Connected to the two terminals of the bulb.
Connected to the two terminals of the bulb.
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MCQ 531 Mark
Which of the following is correct about brass?
  1. Brass is an alloy.
  2. Brass is a magnetic material.
  3. Brass is a non-magnetic material.
  4. Brass is used in making plastic bottles.
  • A
    $ii$ and $iii.$
  • B
    $i $ and $ii.$
  • ✓
    $i$ and $iii.$
  • D
    $ii $ and $iv.$
Answer
Correct option: C.
$i$ and $iii.$
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MCQ 541 Mark
Which one of the following statements is correct?
Statement $1: $ Metal cap of a dry cell is positive terminal of the cell.
Statement $2:$ Metal cap of a dry cell is negative terminal of the cell.
  • ✓
    Statement $1.$
  • B
    Statement $2.$
  • C
    Both statements are correct.
  • D
    Both statements are incorrect.
Answer
Correct option: A.
Statement $1.$
Statement $1.$
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MCQ 551 Mark
Choose the best conductor of electricity:
  • ✓
    Silver.
  • B
    Copper.
  • C
    Iron.
  • D
    Lead.
Answer
Correct option: A.
Silver.
Silver is the best conductor of electricity.
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MCQ 561 Mark
Which of the following will allow electric current to pass through them?
  • A
    Matchstick.
  • B
    Plastic sheet.
  • C
    Plane mirror.
  • ✓
    A steel tumbler.
Answer
Correct option: D.
A steel tumbler.
A steel tumbler.
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MCQ 571 Mark
Which is an example of an insulator:
  • ✓
    Bakelite.
  • B
    Aluminium.
  • C
    Tap water.
  • D
    All of these.
Answer
Correct option: A.
Bakelite.
Aluminium and tap water are conductors of heat.
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MCQ 581 Mark
Electric wires are covered with:
  • A
    A conducting material.
  • ✓
    Insulators.
  • C
    Both the above.
  • D
    None of these.
Answer
Correct option: B.
Insulators.
Insulators.
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MCQ 591 Mark
The S.I. unit of charge is:
  • A
    Ampere.
  • B
    Coulomb/ sec.
  • ✓
    Coulomb.
  • D
    Volt.
Answer
Correct option: C.
Coulomb.
The $S.I.$ unit of charge is coulomb.
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MCQ 601 Mark
The symbol for a closed switch is shown in:
  • A
    Figure $(i).$
  • ✓
    Figure $(ii).$
  • C
    Both figure $(i)$ and figure $(ii).$
  • D
    None of these.
Answer
Correct option: B.
Figure $(ii).$
Figure $(ii).$
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MCQ 621 Mark
The diagram below shows an incomplete circuit.

Which item would allow the bulb to light up if it were used to connect point $A$ to point $B?$
  • A
    A glass rod.
  • ✓
    A metal coin.
  • C
    A plastic comb.
  • D
    A paper cup.
Answer
Correct option: B.
A metal coin.

As metal coin is a good conductor of electricity.

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MCQ 631 Mark
Electric heaters used for cooking have a filament or a heating co placed on a plate made up of clay. Why is this so?
  1. It is a bad conductor of heat.
  2. It is a bad conductor of electricity.
  3. It is porous.
  • ✓
    Only $(i)$ and $(ii).$
  • B
    Only $(ii)$ and $(iii).$
  • C
    Only $(i)$ and $(iii).$
  • D
    $(i), (ii)$ and $(iii).$
Answer
Correct option: A.
Only $(i)$ and $(ii).$

Clay is a bad conductor of heat and electricity. In order to avoid shock due to the flow of current and also to avoid the instrument getting heated, a clay stand is used to place the coil or filament.

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MCQ 641 Mark
Which one of the following is an insulator?
  • A
    Iron.
  • B
    Gold.
  • C
    Silver.
  • ✓
    Paper.
Answer
Correct option: D.
Paper.
Paper.
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MCQ 651 Mark
Which of the following is the symbol of an electric bulb?
  • A
  • ✓
  • C
  • D
Answer
Correct option: B.
The symbol of an electric bulb is shown below.
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MCQ 661 Mark
What for is a tester used by the electrician?
  • ✓
    To test the presence of electric current.
  • B
    To find the amount of electric current passing through an electric circuit.
  • C
    To measure the rate of flow of current through an electric circuit..
  • D
    None of the above.
Answer
Correct option: A.
To test the presence of electric current.
To test the presence of electric current.
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MCQ 681 Mark
The diagram below shows an electric circuit.

Chemical energy from the battery is changed into electrical energy. This electrical energy is then changed to which type of energy?
  • A
    Electrical energy into chemical energy.
  • B
    Electrical energy into heat energy.
  • ✓
    Electric energy into light energy.
  • D
    Electric energy into sound energy.
Answer
Correct option: C.
Electric energy into light energy.
Electric bulb converts electrical energy into light energy.
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MCQ 691 Mark
Non metals like ________ and ________ are conductor of electricity.
  • A
    Wood and paper.
  • ✓
    Graphite and gas carbon.
  • C
    Glass and rubber.
  • D
    None of these.
Answer
Correct option: B.
Graphite and gas carbon.
Graphite and gas carbon.
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MCQ 701 Mark
DIRECTIONS: Read the following three statements carefully and choose the correct option.
Statement-$1$: There is very less current flows when an electric circuit is open.
Statement-$2$: When the switch of an electric circuit is in off mode, the circuit is said to be open.
Statement-$3$: One can get a shock in open circuit.
  • ✓
    Statement $(1)$ and $(3)$ are incorrect while statement $(2)$ is correct.
  • B
    Statement $(1)$ and $(2)$ are incorrect while $(3)$ is correct.
  • C
    All the statements are correct.
  • D
    All the statements are incorrect.
Answer
Correct option: A.
Statement $(1)$ and $(3)$ are incorrect while statement $(2)$ is correct.
Statement $(1)$ and $(3)$ are incorrect while statement $(2)$ is correct.
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MCQ 711 Mark
Why is it unsafe to switch on a bulb with wet hands?
  • ✓
    It can give a shock.
  • B
    The bulb gets fused.
  • C
    The switch blows off.
  • D
    The wires are disconnected.
Answer
Correct option: A.
It can give a shock.
It is unsafe to switch on a bulb with wet hands because it can give a shock.
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MCQ 721 Mark
The diagram shows identical lamps $X$ and $Y$ connected in series with a battery. The lamps light with normal brightness.

If a third lamp $Z$ is connected in parallel with lamp $X,$ then what will happens to the brightness of the lamp $V?$
  • ✓
    Brighter than normal.
  • B
    Normal.
  • C
    Dimmer than normal.
  • D
    Very dim (cannot be seen).
Answer
Correct option: A.
Brighter than normal.

The third lamp $Z$ is connected parallel to $X,$ so the current gets divided among $X$ and $Z.$ So both bulbs $X$ and $Z$ light dimmer and the bulb $Y$ lights brighter than earlier because current through it increases.

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MCQ 731 Mark
Which metal is used for making electric wires?
  • A
    Graphite.
  • B
    Iron.
  • ✓
    Copper.
  • D
    Zinc.
Answer
Correct option: C.
Copper.
Copper is used for making electric wires.
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MCQ 741 Mark
__________ is the sure test of magnetism.
  • A
    Attraction.
  • ✓
    Repulsion.
  • C
    Movement.
  • D
    Breaking.
Answer
Correct option: B.
Repulsion.
Repulsion.
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MCQ 751 Mark
Name the cells in human body which look like electric wires.
  • A
    Arteries.
  • B
    Veins.
  • ✓
    Neurons.
  • D
    All of these.
Answer
Correct option: C.
Neurons.
Neurons is other name of nerve cell.
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MCQ 761 Mark
Filament of a torch bulb is:
  • A
    A metal case.
  • B
    Metal tip at the centre of the base.
  • C
    Two thick wires.
  • ✓
    A thin wire.
Answer
Correct option: D.
A thin wire.
Filament of a torch bulb is a thin wire which gives off light. It is fixed to two thicker wires which provides support to it.
One of these thick wires is connected to the metal case at the base of the bulb and the other thick wire is connected to the metal tip at the centre of the base.
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MCQ 771 Mark
Select the one that is an excellent insulator?
  • A
    Paper.
  • B
    Lead pencil.
  • ✓
    Rubber.
  • D
    Mercury.
Answer
Correct option: C.
Rubber.
Rubber is considered as excellent insulator.
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MCQ 781 Mark
What is the filament of an electric bulb' usually made up of?
  • ✓
    A thin wire with many coils.
  • B
    A thick wire with many coils.
  • C
    A thin straight wire.
  • D
    A thick straight wire.
Answer
Correct option: A.
A thin wire with many coils.
The filament of an electric bulb is usually made up of a thin wire with many coils.
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MCQ 791 Mark
In a closed electric circuit, current flows:
  • A
    In the direction of flow of electrons.
  • ✓
    In the direction opposite to the flow of electrons.
  • C
    Negative terminal to positive terminal of cells.
  • D
    None of these.
Answer
Correct option: B.
In the direction opposite to the flow of electrons.
In a closed circuit current flows in the direction opposite to the flow of electrons.
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MCQ 801 Mark
Electric switch is:
  • A
    A simple device that is used to break the electric circuit.
  • B
    A simple device that is used to complete the electric circuit.
  • ✓
    A simple device that is used to break or to complete the electric circuit.
  • D
    None of the above is correct.
Answer
Correct option: C.
A simple device that is used to break or to complete the electric circuit.
A simple device that is used to break or to complete the electric circuit.
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MCQ 811 Mark
North pole of a magnet can be identified by:
  • A
    Using iron nails.
  • B
    Another magnet without marked poles.
  • C
    Using a steel bar.
  • ✓
    Another magnet having marked north and South Pole.
Answer
Correct option: D.
Another magnet having marked north and South Pole.
Another magnet having marked north and South Pole.
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MCQ 831 Mark
Which is the positive terminal in an electric cell?
  • A
    Metal disc.
  • B
    Metal base.
  • C
    Metal case.
  • ✓
    Metal cap.
Answer
Correct option: D.
Metal cap.
Metal cap.
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MCQ 841 Mark
In which of the following figures a bulb will glow?
  
  • A
    $(i)$ and $(ii).$
  • B
    $(ii)$ and $(iii).$
  • C
    $(iii)$ and $(iv).$
  • ✓
    $(ii)$ and $(iv).$
Answer
Correct option: D.
$(ii)$ and $(iv).$
$(ii)$ and $(iv).$
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MCQ 851 Mark
Look at the following two diagrams and answer in which case bulb will glow?
  • A
    Both $(i)$ and $(ii).$
  • ✓
    Only $(i).$
  • C
    Only $(ii).$
  • D
    None of the above is correct.
Answer
Correct option: B.
Only $(i).$

In $(ii)$ the switch is not on.

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MCQ 861 Mark
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion $A$" and the other labelled as "Reason $R$". You are to examine these two statements carefully and decide if the Assertion $A$ and Reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion $(A):$ Connecting wire is used to connect all components of electric circuit. Reason $(R):$ Connecting wire is made of electric conductor.
  • ✓
    Both $(A)$ and $R$ are true and $R$ is the correct explanation of $(A).$
  • B
    Both $(A)$ and $R$ are true but $R$ is not the correct explanation of $(A).$
  • C
    $A$ is true but $R$ is false.
  • D
    $A$ is false but $R$ is true.
Answer
Correct option: A.
Both $(A)$ and $R$ are true and $R$ is the correct explanation of $(A).$
Both $(A)$ and $R$ are true and $R$ is the correct explanation of $(A).$
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MCQ 871 Mark
In an electric circuit shown below the direction of current is taken from:
  • A
    As shown in $(i).$
  • ✓
    As shown in $(ii).$
  • C
    Can't say.
  • D
    None of the above is correct.
Answer
Correct option: B.
As shown in $(ii).$
As shown in $(ii).$
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MCQ 881 Mark
In the following arrangement shown in Fig. the bulb will not glow if the ends $A$ and $B$ are connected with:
  • A
    A steel spoon.
  • B
    A metal clip.
  • ✓
    A plastic clip.
  • D
    A copper wire.
Answer
Correct option: C.
A plastic clip.

Since, a plastic clip is an insulator, so current will not pass through it and bulb will not glow in this case. However, a steel spoon, a metal clip and a copper wire are conductors of electricity.

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MCQ 891 Mark
A navigating device used by pilots is:
  • A
    Thermometer.
  • B
    Barometer.
  • C
    Ammeter.
  • ✓
    Magnetic compass.
Answer
Correct option: D.
Magnetic compass.
Magnetic compass.
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MCQ 901 Mark
Plastic, rubber, paper are examples of:
  • A
    Conductor.
  • ✓
    Insulator.
  • C
    Terminals.
  • D
    Semi-conductors.
Answer
Correct option: B.
Insulator.
Insulator.
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MCQ 911 Mark
Which one of the following statements is correct?
Statement $1:$ Electricity is a form of energy.
Statement $2:$ Electrical energy can be converted into various other forms of energy.
  • A
    Statement $1.$
  • B
    Statement $2.$
  • ✓
    Both statements are correct.
  • D
    Both statements are incorrect.
Answer
Correct option: C.
Both statements are correct.
Both statements are correct.
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MCQ 921 Mark
Energy used by the following appliances to run is:
  • A
    Kinetic energy.
  • ✓
    Electrical energy.
  • C
    Potential energy.
  • D
    Sound energy.
Answer
Correct option: B.
Electrical energy.
Electrical energy.
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MCQ 931 Mark
DIRECTIONS: Read the following three statements carefully and choose the correct option.
Statement-$1$: If a human high tension wire he will get electric shock.
Statement-$2$: Transmission wires carry a very low voltage current.
Statement-$3$: A bird sitting on a bare high power transmission wire feels a very feeble current.
  • A
    Statement $(1)$ and $(3)$ are incorrect while statement $(2)$ is correct.
  • ✓
    Statement $(1)$ and $(2)$ are incorrect while $(3)$ is correct.
  • C
    All the statements are correct.
  • D
    All the statements are incorrect.
Answer
Correct option: B.
Statement $(1)$ and $(2)$ are incorrect while $(3)$ is correct.
Statement $(1)$ and $(2)$ are incorrect while $(3)$ is correct.
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MCQ 941 Mark
The electric current passes from one terminal to the other terminal of the electric cell, when:
  • A
    Electric circuit is open.
  • ✓
    Electric circuit is closed.
  • C
    Electric circuit is provided with a switch.
  • D
    All the above are correct.
Answer
Correct option: B.
Electric circuit is closed.
Electric circuit is closed.
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MCQ 951 Mark
DIRECTIONS: Read the passage $(s)$ given below and answer the questions that follow. Passage$ - 2$ An electric bulb has a filament that is connected to the terminals. The two terminals of filament are fixed with two thick wires provides support to it. These terminals are fixed in such a manner that they do not touch each other. Filament is:
  • A
    A thin wire that gives off light when bulb is switched on.
  • B
    Fixed to two thick wires which provides support to it.
  • ✓
    Both the above are correct.
  • D
    None of these is correct.
Answer
Correct option: C.
Both the above are correct.
Both the above are correct.
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MCQ 961 Mark
Which one of the following is a conductor of electricity?
  • A
    Paper.
  • B
    Plastic.
  • C
    Wood.
  • ✓
    Aluminum.
Answer
Correct option: D.
Aluminum.
Aluminum.
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MCQ 971 Mark
An ammeter is:
  • A
    A combination of two or more cells.
  • B
    A source of current.
  • C
    Used to control the flow of current.
  • ✓
    An instrument used for measuring the magnitude of current.
Answer
Correct option: D.
An instrument used for measuring the magnitude of current.
An ammeter is an instrument which is used for measuring the magnitude of current in a closed circuit. It is always connected in series to the circuit.
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MCQ 981 Mark
The diagram below shows a bulb and a wire attached to a battery.

Why would this bulb be lit?
  • A
    The battery is out of energy.
  • B
    The bulb is out of energy.
  • C
    The circuit is opene.
  • ✓
    The circuit is closed.
Answer
Correct option: D.
The circuit is closed.
In an electric circuit current flows only when the circuit is closed.
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MCQ 991 Mark
In which of these circuits will the bulb or bulbs glow the brightest?
  • A
    A simple circuit with one bulb and one cell.
  • ✓
    A simple circuit with one bulb and two cells.
  • C
    A simple circuit with two bulbs and one cell.
  • D
    A simple circuit with two bulbs and two cells.
Answer
Correct option: B.
A simple circuit with one bulb and two cells.
A simple circuit with one bulb and two cells glows the brightest.
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MCQ 1001 Mark
Nidhi connected two bulbs across two cells in a simple circuit. What should Nidhi do to make the bulbs glow dimmer?
  • A
    Replace one cell with a piece of chalk.
  • ✓
    Replace one cell with a piece of wire.
  • C
    Replace one bulb with a piece of wire.
  • D
    Replace one bulb with another cell.
Answer
Correct option: B.
Replace one cell with a piece of wire.
The amount of current produced by two cells is more as compared to a single cell. Thus, when a cell is replaced in a circuit with a wire, the bulbs glow dimmer.
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[1 Marks Each] M.C.Q. - Page 2 - Science STD 6 Questions - Vidyadip