Chemical Effects of Electric Current Test

Result

Chemical Effects of Electric Current Test - 12

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is used to detect electric current?

A
Tester

B
LED

C
Compass needle

D
All of the above

Solution

Tester, LED and compass needle, all of them are used to detect electric current.Because on passing of electric current all these three respond by glowing in case of tester or led and by showing delfection in case of compass needle.
Question 2
1 / -0

Which of the following is not fluid?

A
Tap water, vinegar

B
Tap water, vegetable oil

C
Tap water, honey

D
Bread, Biscuit

Solution

Fluids are those that can flow. Basically, liquids and gases are known as fluids as they can flow. In the given options, bread and biscuit can not flow. So they are not fluids.
Question 3
1 / -0

In charging a battery of motor car, which of the following effect of electric current is used?

A
heating

B
magnetic

C
chemical

D
induction

Solution

A battery charger, or recharger, is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it. The charging protocol depends on the size and type of the battery being charged.In charging a battery of motor car, which of the following effect of electric current is used chemical.
Question 4
1 / -0

Which plating is done on bicycle handle bars and wheel rims?

A
Iron plating

B
Gold plating

C
Silver plating

D
Chromium plating

Solution

Chromium plating is done on bicycle handle bars and wheel rims.
Question 5
1 / -0

Non electrolyte solution is a chemical compound which :

A
Contains ions

B
Conducts electricity

C
Does not conduct electricity

D
None of the above

Solution

Answer is C.

A substance that does not dissociate into ions when in solution, and therefore is a poor conductor of electricity when in solution.
Hence, a non electrolytic solution does not conduct electricity.
Question 6
1 / -0

Tin cans used for storing food, are made by electroplating tin onto :

A
iron

B
gold

C
silver

D
copper

Solution

Tin cans, used for storing food, are made by electroplating tin onto iron.
Question 7
1 / -0

Why is a layer of zinc coated on iron?

A
To protect it from corrosion

B
To reduce on cost

C
To make it appear shining

D
All of the above

Solution

A coating of zinc is deposited on iron bridges to protect it from corrosion and formation of rust.
Question 8
1 / -0

Pure water is a ________ conductor of electricity.

A
good

B
bad

C
semi

D
none of the above

Solution

Pure water does not contain any salts or conducting impurities. Hence, it does not conduct electricity.
Question 9
1 / -0

Which of the following is a poor conductor of electricity?

A
Distilled water

B
Tap water

C
Sea water

D
Drinking water

Solution

Distilled water is free of salts so it can not carry any charges hence it is a poor conductor.
Question 10
1 / -0

Why are objects electroplated?

A
To protect it from corrosion.

B
To prevent spoilage of objects.

C
To make it appear shining.

D
All of the above

Solution

Objects electroplated to protect it from corrosion, to prevent spoilage of objects, to make it appear shining etc.

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Re-Attempt Weekly Quiz Competition

Chemical Effects of Electric Current Test - 12

Result

Chemical Effects of Electric Current Test - 12

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SHARING IS CARING

Question 1

Tester

LED

Compass needle

All of the above

Solution

Question 2

Tap water, vinegar

Tap water, vegetable oil

Tap water, honey

Bread, Biscuit

Solution

Question 3

heating

magnetic

chemical

induction

Solution

Question 4

Iron plating

Gold plating

Silver plating

Chromium plating

Solution

Question 5

Contains ions

Conducts electricity

Does not conduct electricity

None of the above

Solution

Question 6

iron

gold

silver

copper

Solution

Question 7

To protect it from corrosion

To reduce on cost

To make it appear shining

All of the above

Solution

Question 8

good

bad

semi

none of the above

Solution

Question 9

Distilled water

Tap water

Sea water

Drinking water

Solution

Question 10

To protect it from corrosion.

To prevent spoilage of objects.

To make it appear shining.

All of the above

Solution

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