Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

electric current

Total questions: 123

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

An electric current can produce

a)

heating effect only.

b)

chemical effect only.

c)

magnetic effect only.

d)

chemical, heating, and magnetic effects.

2.

Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

a)

in the nearby river.

b)

in the nearby pond.

c)

in the nearby cornfield.

d)

according to the disposal guidelines of the local authority.

3.

Which one of the following solutions will not conduct electricity?

a)

lemon juice

b)

vinegar

c)

tap water

d)

vegetable oil

4.

Which of the following metals is used in electroplating to make objects appear shining?

a)

iron

b)

aluminium

c)

copper

d)

chromium

5.

Which of the following solutions will not make the bulb in Fig 14.2 glow?

(a)

(b)

(c)

(d)

a)

sodium chlorides

b)

copper sulphate

c)

silver nitrate

d)

sugar solution in diluted water

6.

Tick the chemical effect of elecric current

a)

boiling

b)

motion

c)

electro shock

d)

Electroplating

7.
Which of the following statements is incorrect about the conductivity of water?
a)
Rain water is a good conductor of electricity.
b)
On addition of table salt, water conducts electricity.
c)
On addition of lemon juice, water conducts electricity.
d)
Water becomes a good conductor of electricity when heated.
8.
Which of the following liquid is not a good conductor of electricity?
a)
Orange juice
b)
Tap water
c)
Vinegar
d)
Honey
9.
When current is passed through a mixture of water and lemon juice, bubbles rise from one of the electrodes. The bubbles are rising from the solution because
a)
of the heating effect of current
b)
of the chemical effect of current
c)
current produces magnetic field around the electrodes
d)
current always produces air bubbles when passed through a liquid
10.

LED stands for

a)

light emitting diode

b)

light efficient diode

c)

length emitting diode

d)

light emitting device

11.

Pure or distilled water is a

a)

poor conductor

b)

good conductor

c)

Both

d)

None of the above

12.

Which of the following does not conduct electricity?

a)

Sugar solution

b)

 Vinegar solution

c)

Lemon juice solution

d)

Caustic soda solution

13.

An electric current can produce

a)

heating effect

b)

chemical effect

c)

magnetic effect

d)

all of the above

14.

Pure or distilled water is a

a)

poor conductor

b)

good conductor

c)

Both

d)

None of the above

15.

Why do we add little dilute sulphuric acid to copper sulphate solution during electroplating?

a)

To increase acidity

b)

 To increase conductivity

c)

So that the colour becomes more prominent

d)

 To burn copper sulphate

16.

Which of the following is a bad conductor of electricity?

a)

 Distilled water

b)

Silver nitrate

c)

 Sulphuric acid

d)

Copper sulphate

17.

Electroplating is based on ___________of an electric current.

a)

Physical effect

b)

Chemical effect

c)

Heating effect

d)

Magnetic effect

18.

Which of these is plated on the iron to prevent it from chemically reacting with food?

a)

Gold

b)

Chromium

c)

Tin

d)

Zinc

19.

Electroplating prevents

a)

electric current

b)

chemical effect

c)

lightening

d)

rusting

20.

Out of the following, which metal is used to electroplate iron to make it shining and rust resistant?

a)

Gold

b)

Chromium

c)

Zinc

d)

Tin

21.
Which of the following statements is incorrect about the conductivity of water?
a)
Rain water is a good conductor of electricity.
b)
On addition of table salt, water conducts electricity.
c)
On addition of lemon juice, water conducts electricity.
d)
Water becomes a good conductor of electricity when heated.
22.

Alloys of metals

a)

allow electric current to flow through them

b)

do not allow electric current to flow through them

c)

sometimes allow and sometimes do not allow electric current to flow through them

d)

None of these

23.

Tin cans used for storing food are made by electroplating

a)

copper on iron

b)

iron on tin

c)

tin on zinc

d)

tin on iron

24.

The filament of the bulb gets heated to a high temperature due to the

a)

magnetic effect of current

b)

heating effect of current

c)

chemical effect of current

d)

all of these

25.

During electrolysis of water,

a)

hydrogen gas is produced

b)

oxygen gas is produced

c)

water is produced

d)

both (a) and (b)

26.

LED stands for

(a)  

27.

To electroplate silver on Copper jewellery, the electrolyte that can be used is:

a)

Copper Sulphate

b)

Silver Nitrate

c)

Ammonium Chloride

d)

Sodium Chloride

28.

Radhika wants to electroplate a plate with ZINC. She has a Zinc bar and the plate. But she does not know which should be the anode and which should be the cathode.

a)

Zinc Bar - Anode, Plate - Cathode

b)

Zinc Bar - Cathode, Plate - Anode

c)

Both Anode and Cathode should be Zinc

29.

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

a)

insulator

b)

conductor

c)

both a and b

d)

none of these

30.

Flow of electron is called

a)

Electroplating

b)

Electric current

c)

Electrodes

d)

Electrolyte

31.

conductors can allow electricity because of the presence of

a)

free ions

b)

free electrons

c)

free protons

d)

atoms

32.

Electroplating is based on ___________of an electric current.

a)

Physical effect

b)

Chemical effect

c)

Heating effect

d)

Magnetic effect

33.

Adding common salt to distilled water makes it

a)

Good Conductor

b)

Poor Conductor

c)

No change

d)

Both A and B

34.

An electrolyte is

a)

a metal

b)

a solution

c)

a liquid that conducts electricity

d)

none of these

35.

Flow of electrons is called

a)

Electrode

b)

Electrolyte

c)

Electric current

d)

Electroplating

36.

Electroplating prevents

a)

electric current

b)

chemical effect

c)

lightening

d)

rusting

37.

Which of these is plated on the iron to prevent it from chemically reacting with food?

a)

Gold

b)

Chromium

c)

Tin

d)

Zinc

38.

Out of the following, which metal is used to electroplate iron to make it shining and rust resistant?

a)

Gold

b)

Chromium

c)

Zinc

d)

Tin

39.

Sugar solution is a good conductor of electricity.

a)

True

b)

False

40.

Chromium corrodes easily.

a)

True

b)

False

41.

Boojho’s uncle has set up an electroplating factory near his village.

He should dispose off the waste of the factory

a)

in the nearby river.

b)

in the corn field

c)

according to the disposal guidelines of the local authority.

d)

in the nearby pond

42.

1.An electric current can produce

a)

heating effect only.

b)

chemical effect only.

c)

magnetic effect only.

d)

chemical, heating, and magnetic effects.

43.

When an electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

a)

the chemical effect of current.

b)

the heating effect of current.

c)

the magnetic effect of current.

d)

the lightning effect of current.

44.

Which one of the following solutions will not conduct electricity?

a)

lemon juice

b)

vinegar

c)

tap water

d)

vegetable oil

45.

The object to be electroplated is taken as ____________ electrode.

a)

cathode

b)

anode

c)

electrode

d)

none of these

46.

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

a)

insulator

b)

conductor

c)

both a and b

d)

none of these

47.

Electroplating is based on

a)

Chemical effect of electricity

b)

Magnetic effect of electricity

c)

Heating effect of electricity

d)

Physical effect of electricity

48.

An electrolyte is

a)

a metal

b)

a solution

c)

a liquid that conducts current

d)

all of above

49.

Flow of electron is called

a)

Electroplating

b)

Electric current

c)

Electrodes

d)

Electrolyte

50.

the phenomenon of decomposition of an electrolyte when electricity is passed through is known as

a)

conduction

b)

coating

c)

electrolysis

d)

electrorefining

51.

the electrode connected to the negative terminal of a battery is known as

a)

anode

b)

negative pole

c)

cathode

d)

electrolyte

52.

electrolyte that ionise completely to form free mobile ions in the solution is known as

a)

strong electrolytes

b)

weak electrolytes

c)

cathode

d)

anode

53.

conductors can allow electricity because of the presence of

a)

free ions

b)

free electrons

c)

free protons

d)

atoms

54.

sea water is an example of

a)

bad conductor

b)

strong electrolyte

c)

weak electrolyte

d)

none of these

55.

which of the following is an application of electroplating.

a)

Electrorefining of metal

b)

extraction of metals from its ores

c)

to minimize the cost

d)

none of these

56.

the method of purification of metals by using electricity is known as

a)

electroplating

b)

electrorefining

c)

electrometal

d)

none of these

57.

Substances that conduct electricity are called (a)   .

58.

Substances that do not conduct electricity are called (a)   .

59.

A cation has (a)   charge.

60.

Some liquids are (a)   conductors of electricity and some are poor conductors of electricity.

61.

Distilled water is an (a)   .

62.

Distilled water when mixed with salts becomes a (a)   conductor of electricity.

63.

Light emitting diodes (LED) glow even when a (a)   electric current flows through it.

64.

The passage of an electric current through a conducting solution causes (a)   .

65.

Change in colour is an example of the (a)   effect of current.

66.

There are (a)   wires attached to an LED.

67.

In an LED, the longer lead is attached to the (a)   terminal of the battery and the shorter lead to the negative terminal.

68.

Distilled water is made by removing all (a)   .

69.

Most liquids that conducts electricity are solutions of acids, bases and salts.

a)

True

b)

False

70.

All liquids conduct electricity.

a)

True

b)

False

71.

When electric current is passed through the copper sulphate solution, copper and sulphate ions are dissociated.

a)

True

b)

False

72.

Which of the following is a good conductor?

a)

Brick

b)

Steel

c)

Plastic

d)

Cotton

73.

Polythene is

a)

a conductor

b)

an insulator

c)

semi conductor

d)

none of these

74.

Which of the following does not conduct electricity?

a)

Sugar solution

b)

Vinegar solution

c)

Lemon juice solution

d)

Caustic soda solution

75.

Which of the following is a bad conductor of electricity?

a)

Distilled water

b)

Silver nitrate

c)

Sulphuric acid

d)

Copper sulphate

76.

Copper is

a)

a good conductor

b)

an insulator

c)

a semi conductor

d)

none of these

77.

Which one is the polluting waste generated by electroplating factories?

a)

Used up electrodes

b)

Electrolytes

c)

Corroded Metals

78.

When acidified water is electrolysed using carbon electrodes. What is produced at (+) and (-) electrodes.

a)

(+) - Oxygen; (-) - Hydrogen

b)

(+) - Oxygen; (-) - Carbon

c)

(+) - Hydrogen (-) - Oxygen

79.

LED stands for

(a)  

80.

Select the poor conductors of electricity

a)

Honey

b)

Plastic

c)

Vinegar

d)

Distilled Water

81.

We can electroplate plastic on iron.

a)

True

b)

False

82.

To electroplate silver on Copper jewellery, the electrolyte that can be used is:

a)

Copper Sulphate

b)

Silver Nitrate

c)

Ammonium Chloride

d)

Sodium Chloride

83.

In a conducting liquid electricity is conducted with the help of :

a)

Proton

b)

Neutron

c)

Electron

d)

Ions

84.

During electrolysis the positively charged ions travel towards Cathode.

a)

True

b)

False

85.

During electroplating ________ (electrode) reduces in size and ________(electrode) increases in size.

(a)  

86.

Bicycle bells and wheel rims are electroplated with which metal?

a)

Tin

b)

Nickle

c)

Chromium

d)

Silver

87.

You perform an experiment taking similar bulbs and cells but two different solutions A and B. You find that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that

a)

higher current is flowing through the circuit in setup A

b)

higher current is flowing through the circuit in setup B

c)

equal current is flowing through both the circuits

d)

No conclusion

88.

Electroplating is based on ___________of an electric current.

a)

Physical effect

b)

Chemical effect

c)

Heating effect

d)

Magnetic effect

89.

Adding common salt to distilled water makes it

a)

Good Conductor

b)

Poor Conductor

c)

No change

d)

Both A and B

90.

An electrolyte is

a)

a metal

b)

a solution

c)

a liquid that conducts electricity

d)

none of these

91.

Flow of electrons is called

a)

Electrode

b)

Electrolyte

c)

Electric current

d)

Electroplating

92.

Tick the chemical effect of elecric current

a)

boiling

b)

motion

c)

electro shock

d)

Electroplating

93.

Who discovered chemical effect of elecric current?

a)

Thomas Edison

b)

Joule-Lenz

c)

Michael Faraday

d)

James Watt

94.

Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

a)

in the nearby river.

b)

in the nearby pond.

c)

in the nearby cornfield.

d)

according to the disposal guidelines of the local authority.

95.

Which one of the following solutions will not conduct electricity?

a)

lemon juice

b)

vinegar

c)

tap water

d)

vegetable oil

96.

Which of the following solutions will not make the bulb in Fig 14.2 glow?

(a)

(b)

(c)

(d)

a)

sodium chlorides

b)

copper sulphate

c)

silver nitrate

d)

sugar solution in diluted water

97.
Which of the following statements is incorrect about the conductivity of water?
a)
Rain water is a good conductor of electricity.
b)
On addition of table salt, water conducts electricity.
c)
On addition of lemon juice, water conducts electricity.
d)
Water becomes a good conductor of electricity when heated.
98.

LED stands for

a)

light emitting diode

b)

light efficient diode

c)

length emitting diode

d)

light emitting device

99.

Sugar solution is a good conductor of electricity.

a)

True

b)

False

100.

the phenomenon of decomposition of an electrolyte when electricity is passed through is known as

a)

conduction

b)

coating

c)

electrolysis

d)

electrorefining

101.

Electroplating prevents

a)

electric current

b)

chemical effect

c)

lightening

d)

rusting

102.

Which of these is plated on the iron to prevent it from chemically reacting with food?

a)

Gold

b)

Chromium

c)

Tin

d)

Zinc

103.

Out of the following, which metal is used to electroplate iron to make it shining and rust resistant?

a)

Gold

b)

Chromium

c)

Zinc

d)

Tin

104.

Chromium corrodes easily.

a)

True

b)

False

105.

Who discovered heating effect of elecric current?

a)

James Watt

b)

Joule-Lenz

c)

Michael Faraday

d)

Thomas Edison

106.

Electroplating is based on ___________of an electric current.

a)

Physical effect

b)

Chemical effect

c)

Heating effect

d)

Magnetic effect

107.

Adding common salt to distilled water makes it

a)

Good Conductor

b)

Poor Conductor

c)

No change

d)

Both A and B

108.

An electrolyte is

a)

a metal

b)

a solution

c)

a liquid that conducts electricity

d)

none of these

109.

Flow of electrons is called

a)

Electrode

b)

Electrolyte

c)

Electric current

d)

Electroplating

110.

Tick the chemical effect of elecric current

a)

boiling

b)

motion

c)

electro shock

d)

Electroplating

111.

Who discovered chemical effect of elecric current?

a)

Thomas Edison

b)

Joule-Lenz

c)

Michael Faraday

d)

James Watt

112.

Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

a)

in the nearby river.

b)

in the nearby pond.

c)

in the nearby cornfield.

d)

according to the disposal guidelines of the local authority.

113.

Which one of the following solutions will not conduct electricity?

a)

lemon juice

b)

vinegar

c)

tap water

d)

vegetable oil

114.

Which of the following solutions will not make the bulb in Fig 14.2 glow?

(a)

(b)

(c)

(d)

a)

sodium chlorides

b)

copper sulphate

c)

silver nitrate

d)

sugar solution in diluted water

115.
Which of the following statements is incorrect about the conductivity of water?
a)
Rain water is a good conductor of electricity.
b)
On addition of table salt, water conducts electricity.
c)
On addition of lemon juice, water conducts electricity.
d)
Water becomes a good conductor of electricity when heated.
116.

LED stands for

a)

light emitting diode

b)

light efficient diode

c)

length emitting diode

d)

light emitting device

117.

Sugar solution is a good conductor of electricity.

a)

True

b)

False

118.

the phenomenon of decomposition of an electrolyte when electricity is passed through is known as

a)

conduction

b)

coating

c)

electrolysis

d)

electrorefining

119.

Electroplating prevents

a)

electric current

b)

chemical effect

c)

lightening

d)

rusting

120.

Which of these is plated on the iron to prevent it from chemically reacting with food?

a)

Gold

b)

Chromium

c)

Tin

d)

Zinc

121.

Out of the following, which metal is used to electroplate iron to make it shining and rust resistant?

a)

Gold

b)

Chromium

c)

Zinc

d)

Tin

122.

Chromium corrodes easily.

a)

True

b)

False

123.

Who discovered heating effect of elecric current?

a)

James Watt

b)

Joule-Lenz

c)

Michael Faraday

d)

Thomas Edison

Similar Resources on Wayground

Chemistry Remediation

120 questions

Chemistry Remediation

quiz

Worksheet

•

8th - 12th Grade

CHEMISTRY TEST TERM 3

118 questions

CHEMISTRY TEST TERM 3

quiz

Worksheet

•

8th Grade

Metals and Reactions

118 questions

Metals and Reactions

quiz

Worksheet

•

8th - 11th Grade