Free Printable CHEMICAL EFFECTS OF ELECTRIC CURRENT

Worksheets

CHEMICAL EFFECTS OF ELECTRIC CURRENT

Total questions: 13

Worksheet time: 6mins

Name

Class

Date

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

Iron

Copper

Chromium

Aluminium

Which of the following statements is incorrect about the conductivity of water?

Rain water is a good conductor of electricity.

On addition of table salt, water conducts electricity.

On addition of lemon juice, water conducts electricity.

Water becomes a good conductor of electricity when heated.

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

of the heating effect of current

of the chemical effect of current

current produces magnetic field around the electrodes

current always produces air bubbles when passed through a liquid

Adding common salt to distilled water makes it

Good Conductor

Poor Conductor

No change

Both A and B

An electrolyte is

a metal

a solution

a liquid that conducts electricity

none of these

Sugar solution is a good conductor of electricity.

True

False

Electroplating prevents

electric current

chemical effect

lightening

rusting

An electric current can produce

heating effect

chemical effect

magnetic effect

all of the above

Tin cans used for storing food are made by electroplating

copper on iron

iron on tin

tin on zinc

tin on iron

10.

LED stands for

(a)

11.

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

insulator

conductor

both a and b

none of these

12.

Prepare a list of objects around you that are electroplated.

4 lines

13.

Write 2 advantages and disadvantages of electroplating?

4 lines

Reset

CHEMICAL EFFECTS OF ELECTRIC CURRENT

Total questions: 13

Worksheet time: 6mins

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