EASY
8th CBSE
IMPORTANT
Earn 100

What is meant by electroplating? What is the purpose of electroplating?

Important Questions on Chemical Effects of Electric Current

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 43
Which properties of chromium metal make it suitable for electroplating it on car bumpers, bath taps and bicycle handlebars, etc., made of iron ?
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 44
A strip of impure copper metal is given to you. Describe briefly how you will purify it by using the chemical effect of electric current. Draw a labelled diagram of the experimental set up used for this purpose.
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Long Answer Type Questions>Q 45
With the help of a labelled diagram, describe briefly how an iron key can be electroplated with copper.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Multiple Choice Questions (MCQs)>Q 46
In an activity to check the conduction of electricity through two liquids labelled A and B by using a bulb, it is observed that the bulb glows brightly for liquid A while it glows very dimly for liquid B.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Multiple Choice Questions (MCQs)>Q 47
Which of the following does not conduct electricity ?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Multiple Choice Questions (MCQs)>Q 48
Which of the following metals should be electroplated on a tiffin box made of steel?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Multiple Choice Questions (MCQs)>Q 49
Which of the following metals are produced by the electrolysis of their molten compounds? 
A. Copper
B. Silver
C. Aluminium
D. Sodium 
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 14 - Chemical Effects of Electric Current>Multiple Choice Questions (MCQs)>Q 50
Which of the following types of energy can be used to decompose water into its elements?