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20 Questions MCQ Test Science & Technology for UPSC CSE - Test: Chemical Effects of Electric Current- 2

Test: Chemical Effects of Electric Current- 2 for UPSC 2023 is part of Science & Technology for UPSC CSE preparation. The Test: Chemical Effects of Electric Current- 2 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Chemical Effects of Electric Current- 2 MCQs are made for UPSC 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Chemical Effects of Electric Current- 2 below.
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Test: Chemical Effects of Electric Current- 2 - Question 1

Battery is a

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 1

Combination of two or more cells is called battery. In a batter cells are connected in series with opposite poles close to each other.

Test: Chemical Effects of Electric Current- 2 - Question 2

The bulb glows when the electric current passes through it due to

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 2

When electric current passes through the filament of bulb get heated and start emitting light and heat energy. So, heating effect of electric current is applied in bulb.

Test: Chemical Effects of Electric Current- 2 - Question 3

Which categories of substance are generally good conductors?

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 3

Metals are generally good conductor of electricity as they have free electron. Non-metals except graphite are bad conductor of electricity.

Test: Chemical Effects of Electric Current- 2 - Question 4

A device which prevents or allow the current to flow through it

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 4

Switch is a device which prevents or allows the current to flow through it. Switch is combined with positive terminal of circuit.

Test: Chemical Effects of Electric Current- 2 - Question 5

In battery two or more cells are connected in

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 5

2 or 3 cells are combined and connected electrically in series and have two main terminals: positive and negative terminals. 

Test: Chemical Effects of Electric Current- 2 - Question 6

When the liquid between two ends allow electric current, then

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 6

When the liquid between two ends allow electric current to pass through them, the bulb of tester blows.

Test: Chemical Effects of Electric Current- 2 - Question 7

Which metal is electroplated on iron for making “cans” for storing food and drinks?

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 7

Tin is electroplated on iron for making cans for storing food and drinks as tin is less reactive than iron.

Test: Chemical Effects of Electric Current- 2 - Question 8

When two or more cells are joined together it forms a

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 8

When two or more cells are joined together in series, it forms a battery. Battery provides more current than single cell.

Test: Chemical Effects of Electric Current- 2 - Question 9

The decomposition of liquid compound on passing an electric current though it is known as _ 

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 9

The decomposition of liquid compound on passing an electric current through it is known as Electrolysis.

When current is passed through an ionic substance that is dissolved, the electrode goes under chemical reaction and separates the materials.

The process of electrolysis uses DC current in the separation of materials.

Test: Chemical Effects of Electric Current- 2 - Question 10

Electric current is said to be pass through a wire when

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 10

Electric current is said to be pass through a wire when only electron passes through it. Flow of electron causes flow of current.

Test: Chemical Effects of Electric Current- 2 - Question 11

What is the common name for manganese-dioxide-alkaline-zinc cell?

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 11

Alkaline cell is commonly called as manganese dioxide alkaline zinc cell.

Test: Chemical Effects of Electric Current- 2 - Question 12

Electric current is measured by a device

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 12

Electric current is measured by a device called ammeter. The S.I. unit of electric current is ampere.

Test: Chemical Effects of Electric Current- 2 - Question 13

Heating effect of electric current is used in

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 13

Heating effect of electric current is used in electric bulb. When current passes through the filament of bulb, due to high resistance, heat is produced that cause glow to glow.

Test: Chemical Effects of Electric Current- 2 - Question 14

Conductor having very high resistance is

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 14

The obstruction in flow of electric current is called resistance. Conductor having very high resistance is called insulator.

Test: Chemical Effects of Electric Current- 2 - Question 15

Potential difference is created in a electric circuit due to

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 15

In a circuit, potential difference is created in an electric circuit to due to cell or battery. Potential difference is measured in Volt.

Test: Chemical Effects of Electric Current- 2 - Question 16

In electric circuit, current flows due to

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 16

In an electric circuit, current flows due to difference in potential difference. Potential difference is due to presence of battery or cell.

Test: Chemical Effects of Electric Current- 2 - Question 17

Heating effect of electric current is used in

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 17

Bread toaster is an appliance that works on heating effect of electric current as the filament of bread toaster has high resistance to provide high heat.

Test: Chemical Effects of Electric Current- 2 - Question 18

Electric circuit provides a complete path for

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 18

The close and continuous path of electric current is called electric circuit. Electric circuit provides a complete path for current to flow.

Test: Chemical Effects of Electric Current- 2 - Question 19

Fuse wire is used in electric circuit to prevent

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 19

Fuse wire is a safety device used in electric circuit to protect the circuit due to overflow of current.

Test: Chemical Effects of Electric Current- 2 - Question 20

Which of the following is a poor conductor of electricity?

Detailed Solution for Test: Chemical Effects of Electric Current- 2 - Question 20

Tap water, iron nail and steel spoon are good conductor of electricity but air is poor conductor of electricity.

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