Class 8 Chemical Effects Of Electric Current CBSE Questions & Answers

Class 8 · Chemical Effects Of Electric Current

This is Science Class 8 Chemical Effects of Electric Current CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The substance through which current can flow easily are called
  • A
    Poor conductor
  • B
    Insulator
  • C
    Good conductor
    Correct
  • D
    Resistor
2
Which of the following object is generally electroplated?
  • A
    Plough
  • B
    Cycle handle
    Correct
  • C
    Car engine
  • D
    Frying pan
3
The passage of an electric current through a solution causes
  • A
    All of these
  • B
    Lighting effect
  • C
    Heating effect
  • D
    Chemical effect
    Correct
4
Which one is not a good conductor of electricity?
  • A
    Copper
    Correct
  • B
    Graphite
  • C
    Silver
  • D
    Plastic
5
Electroplating is done to
  • A
    To make water resistance
  • B
    Make it more stronger
  • C
    Increase the size and shape
  • D
    Make it corrosion free and scratch resistance
    Correct
6
The materials that have high resistance are called
  • A
    Bad conductors
    Correct
  • B
    Good conductors
  • C
    Filament
  • D
    Super conductors
7
Which of the appliances at your home does not run on electric current?
  • A
    Air conditioner
  • B
    Television
  • C
    Mixer grinder
    Correct
  • D
    Gas burner
8
The device used to check whether a particular material allow current to pass through is called
  • A
    Marker
  • B
    Tester
    Correct
  • C
    Switch
  • D
    Bulb
9
Material which do not allow electric current to pass through them easily are called
  • A
    Tester
  • B
    Insulator
  • C
    Good conductor
  • D
    Poor conductor
    Correct
10
Which of the following liquid is good conductor of electricity?
  • A
    Distilled water
  • B
    Sea water
    Correct
  • C
    Sugar solution
  • D
    Alcohol
11
Battery is a
  • A
    Combination of cell and conductor
  • B
    Large single cell
  • C
    Combination of two or more cells
    Correct
  • D
    Combination of two cell only
12
The bulb glows when the electric current passes through it due to
  • A
    Chemical effect of electric current
  • B
    Magnetic effect of electric current
  • C
    Lighting effect of electric current
  • D
    Heating effect of electric current
    Correct
13
Which categories of substance are generally good conductors?
  • A
    Insulator
  • B
    Non-metals
  • C
    Reflector
  • D
    Metals
    Correct
14
A device which prevents or allow the current to flow through it
  • A
    Terminal
  • B
    Switch
    Correct
  • C
    Conductor
  • D
    Motor
15
In battery two or more cells are connected in
  • A
    Positive and positive terminals
  • B
    Parallel
  • C
    Random
  • D
    Series
    Correct